unit2-nce4
NCE_4lesson1
tion of story tellers to another. (ll.2-4)
tools made of stone; legends recorded; remains found.
Write sentences using the following phrases:
B Note the use of tell in this sentence:
1
2 3 4 5
These legends are useful. They can tell us something about migrations of people. These people lived long ago. None could write down what they did. (ll.4-5) The first people who were like ourselves lived long ago. Even their sagas, if they had any, are forgotten. (ll.8-9) Archaeologists have no history to help them to find out where the first ‘modern men’ came from. Archaeologists have no legends to help them to find out where the first modern men came from. (ll.9-10) Fortunately, however, ancient men made tools of stone, especially flint. This is easier to shape than other kinds. (ll.11-12) They may also have used wood and skins. These have rotted away. (l.12)
新概念英语2册第4课ppt精校版课件
寒假来临，不少的高中毕业生和大学 在校生 都选择 去打工 。准备 过一个 充实而 有意义 的寒假 。但是 ，目前 社会上 寒假招 工的陷 阱很多
★ receive
v. 接受，收到
• 收到某人来信 • receive from sb.
=hear from sb. 收到~~的来信
寒假来临，不少的高中毕业生和大学 在校生 都选择 去打工 。准备 过一个 充实而 有意义 的寒假 。但是 ，目前 社会上 寒假招 工的陷 阱很多
3.He is working for a big firm and he has already visited a great number of
different places in Australia.
寒假来临，不少的高中毕业生和大学 在校生 都选择 去打工 。准备 过一个 充实而 有意义 的寒假 。但是 ，目前 社会上 寒假招 工的陷 阱很多
2. V+宾语+宾补 Find + n. + adj. 发现教室很干净 find the room clean make + n. + adj 让学生们开心 make the students happy
寒假来临，不少的高中毕业生和大学 在校生 都选择 去打工 。准备 过一个 充实而 有意义 的寒假 。但是 ，目前 社会上 寒假招 工的陷 阱很多
★ different
adj.
不同的
1. 与……不同
be different from 这个电脑和那个不同。 This computer is different from that one. • 反义词： 与……相同 the same …as 这个电脑和那个电脑相同。 This computer is the same as that one.
全新版大学英语综合教程4Vocabulary翻译
Vocabu laryUnit 11) alliance【译文】工党的竞选策略是建立在与其他小党战略联盟的基础上的，这一策略证明是成功的。
2) heroic【译文】纽约消防队员营救“9•11”受害者时的英勇行为受到全国人民的颂扬。
3) stroke【译文】詹尼勒在瓦砾下埋了26个小时候活着走了出来，真是幸运！4）limp【译文】我兄弟的伤并不重，但由于是腿部受伤所以几个星期以来他不得不一瘸一拐地走。
5）minus【译文】这架飞机经受了摄氏零下65度的低温和摄氏零上120度的测试。
6）regions【译文】我国将运用税额奖励制度来把东部海岸的公司吸引到西部去。
7）declarations【译文】开幕词听起来不像是和平的倡议更像是在宣战。
8）siege【译文】被警方围困了三天之后，占领了饭店的恐怖分子只好投降了。
9) raw【译文】我们刚一下飞机踏上草原，迎面吹来一阵刺骨的寒风。
10) retreat【译文】敌机的轰炸迫使坦克从这座城市撤出。
11) have taken their toll【译文】过去几个月的烦心事影响了她的健康，她都有黑眼圈了。
12) In the case of【译文】周末上班的工人拿双薪，节假日期间工作，工资为平时的三倍。
13) campaign【译文】频频亮相和与公众握手是竞选活动中必不可少的一部分。
14) at the cost of 【译文】政府军以2000人员的伤亡为代价从反叛者手中夺回了这座城市。
15) has been brought to a halt【译文】由于码头工人罢工，原材料不能按时运到，许多工厂的生产被迫停止。
Unit 21) expansion【译文】在英裔美国人向西扩张之前，北美已经受到其他众多文化的影响。
NCE4 Lesson 2新概念文本
Lesson 2 单词讲解1. beast:something of a particular type or that has a particular quality - usually used humorously [= animal]:例: A brutal, contemptible person.野蛮、卑鄙的人Beauty and Beast:An old story about a beautiful young girl called Beauty, who is forced to live with a frightening creature called the Beast. The Beast loves her and she gradually begins to care about him too. He continually asks her to marry him, and when she finally agrees, he magically becomes the beautiful prince that he used to be.2. contentcontent with例: We'll be content with a respectable result intomorrow's match.He seemed quite content to let Steve do the talking.Not content with her new car, Celina now wants a bike.Lesson 2 课文讲解1. Because they destroy so many insects, and insectsinclude some of the greatest enemies of the human race. destroy somebody's confidence/hope/faith etc.to kill an animal, especially because it is ill or dangerous: 例: One of the bulls had to be destroyed.destroy, ruin, spoilDestroy means to damage something so badly that it no longer exists or people can no longer use it.例: The earthquake destroyed even the tallest buildings.The rainforests are being destroyed at a frightening rate.If you ruin or spoil something, it still exists, but it has lost all its good qualities or features. Ruin is stronger than spoil例: The rain ruined my hair.I don't want to spoil your day.2. Insects would make it impossible for us to live in theworld; they would devour all our crops and kill our flocksand herds, if it were not for the protection we get frominsect-eating animals.make it impossible for us to live in the world中 it 是形式宾语，真正的宾语是for us to live in the worldinsects would 和 they would 中的 would 均表示与事实不符的虚拟结构if it were not for the protection…作前面两个分句的非真实条件状语从句，意即“要不是我们从食虫那里得到保护的话……”。
NCE(2)UNIT3 & 4测试卷
Test For Lesson 61-96 NCE IITime: 80 minutes Name:Score:I．听力(共15小题，满分20分)(1)请听录音后补充空缺的单词（听2遍）Passage 1One of the most famous (1) in the world, the Statue of Liberty, was (2)to the United States of America in the nineteenth century by the people of France. The great statue,.a) dismissed b) sent by air c) sent to another place d) shot4. Children can be instructed in swimming. They can be .a) learnt to swim b) learnt swimming c) taught how to swim d) learnt how to swim5. They are not reluctant to enter the water. They are .a) unwilling to b) willing to c) not ready to d) slow to6. It was especially constructed be Eiffel. It was constructed .a) for a special purpose b) particularly c) in particular d) on purpose7. She was fast asleep. She was asleep.a) deeply b) sound c) quick d) soon8. I’d prefer to stay here. That’s what I’d.a) do b) rather do c) have done d) do best9. The balloon landed near an airfield. it .a) came along b) came down c) came over d) came off10. He was angry when he heard the news. He was angry the news.a) with hearing b) in hearing c) on hearing d) for hearing11. These eating varieties are sometimes twelve feet .a) length b) depth c) long d) deep12. There must have been several hundred people present. …a) I think there were b) There must be c) It was necessary to be d) There had to bewords.learnt about 300 words. She made words and sentences too. One day someone put a doll in her cup. She made the sentence ‘Baby—in—my—drink’ in sign language.1. A chimpanzee is the most beautiful animal in the world. ( )2.The chimpanzee in the picture was named Washoe. ( )3.Washoe was a hardworking but stupid learner. ( )4.Washoe could make words and sentences in sign language with her hands. ( )5.It was easy for Washoe to learn sign language. ( )IV．课文重、难点(共15小题，满分30分)(1)用正确的词填空1. He arrived late as (usually) (usual).2. Whatever you do, don’t lose you (temper) (mood).3. The questions were (fairly) (enough) difficult, but I managed to answer them.4. There was a long (row) (queue) at the bus stop.5. Bread and butter (is) (are) fattening.6. What a lot of dirty plates! Who is going to (wash up) (wash).7. We all (laughed) (laughed at) when he told us a funny story.8. The soldier (saluted) (greeted) his mother with a kiss.were。
全新版大学英语（第二版）综合教程4学生用书课后习题答案（后附testyourself重要词翻译）
UNIT11)多尔蒂先生和他的家人目前正在农场忙于秋收。
Mr. Doherty and his family are curren tly engage d in gettin g the autumn harves t in on the farm.2)我们不能低估敌人，他们装备了最先进的武器。
We must not underestima te the enemy. They are equipp ed with the most sophis ticat ed weapo n s.3)菲尔已三个月没有找到工作了，正变得越来越绝望。
Having been out of a job/Not having had a job for 3 months, Phil is gettin g increa singl y desperate.4)作为项目经理，山姆办事果断，工作效率高，且判断准确。
Sam, as the project manage r, is decisi ve, effici ent, and accura te in his judgme nt.5)既然已证实这家化工厂是污染源，村委会决定将其关闭，为此损失了一百个工作岗位。
Since the chemic al plantwas identi fiedas the source of pollut ion, the villag e neighb orho o d commit tee decide d to closeit down at the cost of 100 jobs.2.攻势已经持续三天，但是我们并没有取得多少进展。
The offensive had alread y lasted threedays, but we had not gained much ground.师长命令我们营夜晚绕到敌人后方发起突然袭击。
NCE2 lesson 4
课文逐句讲解：
1.I have just received a letter from my brother, Tim. 我刚收到一封弟弟蒂姆写来的的信。 (1 )短语：receive sth. from sb.收到从某人那里送出的某物 This morning I received a letter from my brother. 今天早上我收到了妈妈写来的一封信。 (2) 此句中Tim为my brother的同位语，对my brother进 行解释说明。
现在进行时经常用于表示在短期内正在进行的动作或存在 的情况，因此往往不需要和时间状语连用。试比较： He has just finished his homewoek. He is doing his homework. 他刚写完作业。/他正在写作业。 I have learned how to spell it. I am learning how to spell it. 我已经学过怎么拼写它了。 我正在学习怎么拼写它。
4.Tim is an engineer. 蒂姆是一名工程师。 engineer: one who operates an engine工程师，即操 作或修理发动机的人 1）engine（发动机）+er（表人）——engineer 2）fire engine消防车 3）engineer(=design/devise)设计 The villa is very well engineered.这套别墅设计得很好。
6. He has just bought an Australian car and has gone to Alice Springs, a small town in the centre of Australia. 他刚买了一辆澳洲产的小汽车，现在去了在澳大利亚中部 的一个小城镇，艾莉斯普林斯。 (1) 比较两个句子：He has gone to the cinema. 他去了电影院。（还没有回来） He has been to the cinema. 他曾经去过电影院（现已回来） (2) Alice springs, a small town in the center of Australia后者为前者的同位语，对前者进一步说明。 (3) a small town in the centre of Australia此部分为介 词短语做后置定语的结构，in the centre of Australia为 介词in引导的短语，修饰a small town，说明其地理位置。
人教版高一英语必修一Unit2知识梳理、重点词汇解析
人教版高一英语必修一Unit2知识梳理、重点词汇解析常言说:万事开头难。
还常说,能有一个好的开头,就是胜利的一半;即使不能有一半的胜利,也为今后打下好的基础。
进入高一学好英语打好基础很重要，以下是整理的高一英语学习文章。
人教版高一英语必修一Unit2学问梳理、重点词汇解析及单元自测Unit2一、学问点1. go to the pictures去看电影(美);go to the movies 去看电影(英)2. list the countries tht use English s n officil lnguge 列举把英语用作官方语言的GJ3. the rod to 通向之路4. t the end of在末端，在尽头，by the end最终(=finlly)5. becuse of 因为(留意和becuse 的区分)Mny beutiful fish re fst disppering becuse of the severe pollution.因为污染严峻，很多秀丽的鱼类正在面临绝种。
n rgument ws inevitble becuse they disliked ech other so much.争辩是不行幸免的，因为他们彼此特别厌恶。
6. ntive English spekers 以英语作为母语的人7. even if (= even thoug)即使，用来引导一个让步状语从句，后面既可用陈述语气，也可用虚拟语气，但是even if/even though,引导的从句中不用将来时。
如：Even though/if it rins tomorrow, we will leve for Beijing.8. come up 走上前来，走近，发生，出现come up with 追上，赶上，提出9. ctully ll lnguges chnge nd develop when cultures meet nd communicte with ech other.事实上，当不同文化互相沟通渗透时，全部的语言都会有所进展、有所改变。
人教版九年级英语unit2知识归纳
人教版九年级英语unit2知识归纳人教版九年级英语unit2知识1Mooncake['mu:nke?k]n.月饼lantern[?l?nt?(r)n]n.灯笼stranger[?streind??(r)]n.陌生人relative[?rel?tiv]n.亲属;亲戚puton增加(体重);发胖pound[paund]n.磅(重量单位);英镑folk[f?uk]adj.民间的;民俗的goddess[?g?des][?ɡɑd?s]n.女神whoever[hu:?ev?pron.无论是谁;不管谁;任何人steal[sti:l]v.(stole[st?ul],stolen[st?ul?n])偷;窃取lay[lei]v.(laid[leid],laid)放置;产(卵)layout摆开;布置dessert[di?z?:(r)t]n.(饭后)甜点;甜食garden[ga:(r)dn]n.花园;园子tradition[tr??d??n]n.传统admire[?d?mai?(r)]v.欣赏;仰慕tie[tai]n.领带v.捆;束haunted[?h?:ntid]adj.有鬼魂出没的ghost[g?ust]n.鬼;鬼魂trick[trik]n.花招;把戏treat[tri:t]n.款待;招待;请客spider[?spaid?r)]n.蜘蛛Christmas[?krism?s]n.lie[laI]v.(lay[leI],lain[leIn])存在;平躺;处于novel[?n?vl][?na:vl]n.(长篇)小说eve[i:v]n.(尤指宗教节假日的)前夕;前夜dead[ded]adj.死的;失去生命的business[?bizn?s]n.生意;商业punish[?p?nis]v.处罚;惩罚warn[w?:(r)n]v.警告;告诫endup最终成为;最后处于present[preznt]n.现在;礼物adj.现在的nobody[n?ub?di][n?uba:di]pron.没有人warmth[w?:(r)mθ]n.温暖;暖和spread[spred]v.传播;展开n.蔓延;传播Macao[m??kau]澳门ChiangMai[?t?i?n?maI],[d?a:nmaI]清迈(泰城市)WaterFestiwal泼水节Mid-AutumnMother'sDayFather'sDayHalloween[?h?l?u?i:n]前夕AChristmasCarol《圣诞欢歌》(小说名)Easter复活节Clara[?kla:r?][?kler?]克拉拉(女名)Santa[?s?nt?]Claus[kl?:z]圣诞老人Charles[t?a:(r)lz]Dickens[?dik?nz]查尔斯?狄更斯(英)Scrooge[skru:d?]斯克鲁奇n.(非正式)吝啬鬼Jacob[?d?eik?b]Marley[?ma:(r)li]雅各布?马利人教版九年级英语unit2知识2知识梳理【重点】1.puton增加(体重);发胖2.careabout关心;在乎endup最终成为，最后处于notonly……butalso……不但……而且……5.shootdown射下edtodo过去常常做……7.remindsb.of使某人想起8.giveout分发发放thewaterfestival泼水节theChinesespringfestival中国11.nextyear明年12.soundlike听起来像13.eachother互相彼此19.asaresult结果因此20.Mother’sday母亲节21.moreandmorepopular越来越受欢迎22.thinkof想起;认为;思考dressup装扮穿上盛装theimportanceof……的重要性25.makemoney挣钱26.inneed需要帮助处于困境中27.between…and…在……和……之间28.thedragonboatfestival龙舟节29.thelanternfestival30.likebest最喜欢31.goto…foravacation去……度假32.besimilarto与……相似washaway冲走洗掉Mid-autumnfestival中秋节35.shootdown射下36.callout大声呼喊37.thetraditionof……的传统38.atnight在夜里;在晚上one…，theother…一个……，另一个…...Father’sday父亲节【重点句型】1.Ithinkthatthey’refuntowatch.我认为它们看着很有意思。
外研版七年级英语上册教案 Starter Module 4 Unit 2
Unit2 What’stheweatherlike?◇目标导航◇类别课时要点重点单词spring n.春天summer n.夏天autumn n.秋天winter n.冬天warm adj.暖和的;温暖的hot adj.热的cool adj.凉快的cold adj.冷的weather n.天气like prep.如同;像London n.伦敦预习指导一、方法指导1.学生自主预习教材PS22~S23中的新单词(见词汇表P89),熟悉单词读音及汉语意思。
2.预习教材中的对话,能自主朗读对话并翻译对话中的句子。
二、预习检测Ⅰ.汉译英1.春天spring2.夏天summer3.秋天autumn4.冬天winter5.暖和的warm6.冷的cold7.热的hot 8.凉快的cool9.天气weather 10.像likeⅡ.根据汉语意思完成句子,每空一词1.春天的天气怎么样?What’s the weather like in spring?2.天气暖和。
It’s warm.3.在伦敦秋天的天气怎么样?What’s the weather like in London in autumn?4.在香港夏天的天气怎么样?What’s the weather like in Hong Kong in summer ? 课堂教学Step1 情景导入T:Hello,class.What day is it today?Ss:It’s...T:What day is it tomorrow?Ss:It’s...Step2 听读练习1.老师播放录音,让学生跟读,学习表示季节和天气的单词,注意它们的拼写与读音。
完成教材任务1。
2.听录音并跟读,然后将图片与句子连起来,注意句子的汉语意思,完成教材任务2。
Step3 听一听,指一指1.老师播放录音,学生指出录音中播放的是哪张图片,看谁听得准确。
完成教材任务3。
2.再听录音,并根据录音和图片练习,完成教材任务4。
NCE2 Lesson 4 An exciting trip
I agree with him, we should accept the price. 我同意他的意见： 我同意他的意见：我们应该接 受这个价格。 受这个价格。 I can’t agree with you more! 我非常赞同你的观点！ 我非常赞同你的观点！
我收到一封信， 我收到一封信，上面说他们已经 同意接收那个小孩子了。 同意接收那个小孩子了。
现在完成时常与一些词、 现在完成时常与一些词、词组连用 :
ever（曾） （ for + 时间段 never（未曾） （未曾） since + 时间点 already（已经） （已经） yet（仍、还） （ just （刚刚） 刚刚） before（以前 （以前)
already, yet, ever, never, just的用法 already 肯定句，强调已经的意思, 肯定句，强调已经的意思 放句中或句末. 放句中或句末 I have already finished my homework. = I have finished my homework already. 我已经不是三岁小孩子了！！！ 我已经不是三岁小孩子了！！！
Ask&answer
1. Do you like traveling? 2. Where would you like to visit? 3. During the traveling, what makes you feel excited? 4. Do you have any exciting experiences to share with us?
新概念英语4答案
新概念英语4答案【篇一：新概念英语第四册课后习题答案】txt>unit 1 cabdd bdaac ab unit 25 dbadd cacdb caunit 2 bcbdc acaad bc unit 26 cbcba cddab acunit 3 cabda cdaba cd unit 27 bcdcc accdd daunit 4 accab bcdaa bd unit 28 adcda bcada bdunit 5 cabab dacbb dd unit 29 ccadd ccada bcunit 6 caccc aaadb aa unit 30 cabdd bccac dcunit 7 dcaba bacda ac unit 31 aabad baddc bdunit 8 bdabd baabc bc unit 32 bdcba dbdca bcunit 9 cdbaa cabac ad unit 33 bdbad bccdc baunit 10 caabd cbbdc aa unit 34 dcacb dacdb caunit 11 aabdd daddb dd unit 35 cbcac abbdc cdunit 12 cabac cdaca ab unit 36 acbcc accdb acunit 13 acdac bdabc ad unit 37 cabac dbcdc bdunit 14 dbdcc accbd bd unit 38 caabb acbdd abunit 15 cadcd dbaca ca unit 39 bcada bddbd bcunit 16 abcca ddbab ac unit 40 dcdac addda dbunit 17 bbada bbdcd ca unit 41 acacd cbbbd bcunit 18 babcd cdccc ba unit 42 bccbd bdadc acunit 19 bbcad aabdd bc unit 43 dbabc cddac bbunit 20 bcadc ccbdb ca unit 44 aaaab bbbdc baunit 21 bdbba addab ca unit 45 cadac cacdc dcunit 22 cdacb adbcd ab unit 46 bbdbd abcda bdunit 23 cadcc dcabc ac unit 47 caadb cacdb bcunit 24 aaccb cadda cd unit 48 ccbcc ccdba ab新概念4 笔记 /nce/24278_2.shtmlunit 1 finding fossil man一、重点单词解释1、recount：v.叙述注意读音，重音在后。
新概念英语第册二Lesson4——an exciting trip课件
Pronunciation
• exciting • receive • firm • different • centre • abroad
[ɪk'saɪtɪŋ] [rɪ'siːv] [fɜːm] ['dɪfərənt] ['sentə] [ə'brɔːd]
adj. v. n. adj. n. adv.
正在一家大公司工作。
He is working for a big firm.
并且已经去过澳大利亚的不少地方了。 and he has already visited a great number of different places in Australia. 他刚买了一辆澳大利亚小汽车。
He has just bought an Australian car
work on (Book I-L87) 从事于....../继续工作......
用receive, hear或take填空
1. I have just _r_e_c_e_i_v_e_d_ a letter from my brother. 2. Please ___t_a_k_e___ this book to your sister. 3. I have just ___h_e_a_r_d__ from my brother. 4. We ____t_o_o_k___ our books with us yesterday.
in the middle 是指在小范围的中间 e.g. There is a teacher in the middle of the classroom.
7. abroad
adv.在国外
go abroad 出国
大学英语精读第三版第二册英语课文
UNIT2e ssons from jeff ersonJeff erson died long ago, butmay o f his idea s sti ll of grea t int erest to u s.Lesso ns fr om Je ffers onThoma s Jef ferso n, th e thi rd Pr eside nt of theUnite d Sta tes,may b e les sfam ous t han G eorge Wash ingto n and Abra ham L incol n, bu t mos t peo ple r ememb er atlast onefactabout him: he w rotethe D eclar ation of I ndepe ndenc e.Altho ugh J effer son l ivedmorethan200 y earsago,there is m uch t hat w e lea rn fr om hi m tod ay. M any o f his idea s are espe ciall y int erest ing t o mod ern y outh. Here aresomeof th e thi ngs h e sai d and wrot e:Go an d see. Jef ferso n bel ieved that a fr ee ma n obt ainsknowl edgefrommanysourc es be sides book s and that pers onalinves tigat ion i s imp ortan t. Wh en st ill a youn g man, hewas a ppoin ted t o a c ommit tee t o fin d out whet her t he So uth B ranch of t heJa mes R iverwas d eep e nough to b e use d bylarge boat s. Wh ile t he ot her m ember s ofthe c ommit tee s at in thestate capi tol a nd st udied pape rs on thesubje ct, J effer son g ot in to acanoe andmadeon-th e-spo t-obs ervat ions.Yo u can lear n fro m eve ryone. Bybirth andby ed ucati on Je ffers on be longe d tothe h ighes t soc ial c lass. Yet, in a daywhenfew n obleperso ns ev er sp oke t o tho se ofhumb le or igins exce pt to give an o rder, Jeff erson went outof hi s wayto t alk w ith g arden ers,serva nts,and w aiter s. Je ffers on on ce sa id to theFrenc h nob leman, Laf ayett e, "Y ou mu st go into thepeopl e's h omesas Ihavedone, look into thei r coo kingpotsand e at th eir b read. If y ou wi ll on ly do this, you mayfindout w hy pe opleare d issat isfie d and unde rstan d the revo lutio n tha t isthrea tenin g Fra nce."Ju dge f or yo ursel f. Je ffers on re fused to a ccept othe r peo ple's opin ionswitho utca reful thou ght."Neit her b eliev e nor reje ct an ythin g," h e wro te to hisnephe w, "b ecaus e any othe r per son h as re jecte d orbelie ved i t. He avedhas g ivenyou a mind forjudgi ngtr uth a nd er ror.Use i t."Jeff erson felt that thepeopl e "ma y saf ely b e tru stedto he ar ev eryth ing t rue a nd fa lse,and t o for m a c orrec t jud gment. Wer e itleftto me to d ecide whet her w e sho uld h ave a gove rnmen t wit houtnewsp apers or n ewspa perswitho ut agover nment, I s hould nothesit ate a mome nt to pref er th e lat ter."Do what youbelie ve is righ t. In a fr ee co untry ther e wil l alw ays b e con flict ing i deas, andthisis asourc e ofstren gth.It is conf lictand n ot un quest ionin g agr eemen t tha t kee ps fr eedom aliv e. Th oughJeffe rsonwas f or ma ny ye ars t he ob jectof st rongcriti cism,he n everanswe red h is cr itics. Heexpre ssedhis p hilos ophyin le tters to a frie nd, "There aretwo s idesto ev ery q uesti on. I f you take onesidewithdecis ion a nd on it w ith e ffect, tho se wh o tak e the othe r sid e wil l ofcours e res ent y our a ction s."T rustthe f uture; tru st th e you ng. J effer son f elt t hat t he pr esent shou ld ne ver b e cha inedto cu stoms whic h hav e los t the ir us efuln ess."No s ociet y," h e sai d, "c an ma ke aperpe tualconst ituti on, o r eve n a p erpet ual l aw. T he ea rth b elong s tothe l iving gene ratio n." H e did notfearnew i deas, nordid h e fea r the futu re. "How m uch p ain,"he r emark ed, "has b een c aused by e vilswhich have neve r hap pened! I e xpect thebest, notthe w orst. I st eer m y shi p wit h hop e, le aving fear behi nd."Jef ferso n's c ourag e and idea lismwerebased on k nowle dge.He pr obabl y kne w mor e tha n any othe r man of h is ag e. He wasan ex pertin ag ricul ture, arch eolog y, an d med icine. Hepract icedcroprotat ion a nd so il co nserv ation a ce ntury befo re th ese b ecame stan dardpract ice,and h e inv ented a pl ow su perio r toany o therin ex isten ce. H e inf luenc edar chite cture thro ughou t Ame rica, andhe wa s con stant ly pr oduci ng de vices formakin gthe task s ofordin ary l ife e asier to p erfor m.Of al l Jef ferso n's m any t alent s, on e iscentr al. H e was abov e all a go od an d tir eless writ er. H is co mplet e wor ks, n ow be ing p ublis hed f or th e fir stti me, w ill f ill m ore t han f iftyvolum es. H is ta lentas an auth or wa s soo n dis cover ed, a nd wh en th e tim e cam e towrite theDecla ratio n ofIndep enden ce at Phil adelp hia i n 1776, th e tas k ofwriti ng it washis.Milli ons h ave t hrill ed to hiswords: "We hold thes e tru ths t o beself-evide nt, t hat a ll me n are crea ted e qual…Wh en Je ffers on di ed on July 4, 1826,the 50th a nnive rsary of A meric anin depen dence, helefthis c ountr ymena ric h leg acy o f ide as an d exa mples. Ame ricaneduc ation owes a gr eat d ebt t o Tho mas J effer son,Who b eliev ed th at on ly anatio n ofeduca ted p eople coul d rem ain f ree.杰斐逊很久以前就死了，但是我们仍然对他的一些思想很感兴趣,杰斐逊的箴言, 布鲁斯.布利文、托马斯.杰斐逊美国第三任总统，也许不像乔治.华盛顿和亚伯拉罕.林肯那样著名，但大多数人至少记得有关他的一件事实：《独立宣言》是他起草的。
NCE40H12K 枪型电容电流防护电阻的商品说明书
NCE N-Channel Enhancement Mode Power MOSFETDescriptionThe NCE40H12K uses advanced trench technology and design to provide excellent R DS(ON) with low gate charge. It can be used in a wide variety of applications.General Features● V DS =40V,I D =120AR DS(ON) <4.0m Ω @ V GS =10V R DS(ON) <7m Ω @ V GS =4.5V● High density cell design for ultra low Rdson ● Fully characterized avalanche voltage and current ● Good stability and uniformity with high E AS ● Excellent package for good heat dissipation ● Special process technology for high ESD capabilityApplication● Load switching● Hard switched and high frequency circuits ● Uninterruptible power supply100% UIS TESTED!100% ∆Vds TESTED!Schematic diagramMarking and pin assignmentTO-252-2L top viewPackage Marking and Ordering InformationDevice MarkingDeviceDevice PackageReel SizeTape widthQuantityNCE40H12K NCE40H12K TO-252-2L-- -Absolute Maximum Ratings (T C =25℃unless otherwise noted)Parameter Symbol Limit UnitDrain-Source Voltage V DS 40 V Gate-Source Voltage V GS ±20 V Drain Current-ContinuousI D 120 ADrain Current-Continuous(T C =100℃) I D (100℃) 85 A Pulsed Drain Current I DM 330 A Maximum Power Dissipation P D 120 W Derating factor0.8 W/℃Single pulse avalanche energy (Note 5)E AS 1080 mJOperating Junction and Storage Temperature RangeT J ,T STG-55 To 175℃Thermal CharacteristicThermal Resistance,Junction-to-Case (Note 2)R θJC1.25/W ℃Electrical Characteristics (T C =25℃unless otherwise noted)ParameterSymbolCondition Min Typ Max UnitOff CharacteristicsDrain-Source Breakdown Voltage BV DSS V GS =0V I D =250μA 40 45 - V Zero Gate Voltage Drain Current I DSS V DS =40V,V GS =0V -- 1 μA Gate-Body Leakage Current I GSS V GS =±20V,V DS =0V - - ±100 nA On Characteristics (Note 3) Gate Threshold VoltageV GS(th) V DS =V GS ,I D =250μA 1.2 1.8 2.5 V V GS =10V, I D =20A - 3.6 4.0Drain-Source On-State Resistance R DS(ON) V GS =4.5V, I D=10A - 5.8 7.0 m ΩForward Transconductance g FSV DS =10V,I D =20A 26 - - SDynamic Characteristics (Note4) Input Capacitance C lss - 5400 - PF Output CapacitanceC oss - 970 - PFReverse Transfer Capacitance C rssV DS =20V,V GS =0V,F=1.0MHz- 380 - PF Switching Characteristics (Note 4) Turn-on Delay Time t d(on) - 15 - nSTurn-on Rise Time t r - 18 - nS Turn-Off Delay Time t d(off) - 52 - nSTurn-Off Fall Time t fV DD =20V,I D =2A,R L =1Ω V GS =10V,R G =3Ω - 23 - nSTotal Gate Charge Q g - 75 nCGate-Source Charge Q gs - 10.5 nCGate-Drain ChargeQ gd V DS =20V,I D =20A,V GS =10V- 17 nC Drain-Source Diode Characteristics Diode Forward Voltage (Note 3) V SDV GS =0V,I S =40A -1.2 V Diode Forward Current (Note 2)I S - - 120 A Reverse Recovery Time t rr - 42 - nS Reverse Recovery Charge Qrr TJ = 25°C, IF = 40Adi/dt = 100A/μs (Note3)- 45 - nCForward Turn-On Timet onIntrinsic turn-on time is negligible (turn-on is dominated by LS+LD)Notes:1. Repetitive Rating: Pulse width limited by maximum junction temperature.2. Surface Mounted on FR4 Board, t ≤ 10 sec.3. Pulse Test: Pulse Width ≤ 300μs, Duty Cycle ≤ 2%.4. Guaranteed by design, not subject to production5. E AS condition : Tj=25℃,V DD =20V,V G =10V,L=1mH,Rg=25Ω，I AS =46.5ANCE40H12K Test circuit1) E AS Test Circuit2) Gate Charge Test Circuit3) Switch Time Test CircuitTypical Electrical and Thermal Characteristics (Curves)Vds Drain-Source Voltage (V)Figure 1 Output CharacteristicsVgs Gate-Source Voltage (V)Figure 2 Transfer CharacteristicsI D - Drain Current (A)Figure 3 Rdson- Drain CurrentT J -Junction Temperature(℃)Figure 4 Rdson-JunctionTemperatureQg Gate Charge (nC)Figure 5 Gate ChargeVsd Source-Drain Voltage (V)Figure 6 Source- Drain Diode ForwardR d s o n O n -R e s i s t a n c e (m Ω)I D - D r a i n C u r r e n t (A )I D - D r a i n C u r r e n t (A )N o r m a l i z e d O n -R e s i s t a n c eV g s G a t e -S o u r c e V o l t a g e (V )I s - R e v e r s e D r a i n C u r r e n t (A )Vds Drain-Source Voltage (V)Figure 7 Capacitance vs VdsVds Drain-Source Voltage (V)Figure 8 Safe Operation AreaT J -Junction Temperature (℃)Figure 9 Power De-ratingT J -Junction Temperature(℃)Figure 10 V GS(th) vs Junction TemperatureI D - D r a i n C u r r e n t (A )C C a p a c i t a n c e (p F )Square Wave Pluse Duration(sec)Figure 11 Normalized Maximum Transient Thermal Impedancer (t ),N o r m a l i z e d E f f e c t i v e T r a n s i e n t T h e r m a l I m p e d a n c eP o w e r D i s s i p a t i o n (W )TO-252 Package InformationDimensions In Millimeters Dimensions In Inches SymbolMin.Max.Min.Max.A 2.200 2.400 0.087 0.094A1 0.000 0.127 0.000 0.005b 0.660 0.860 0.026 0.034c 0.460 0.580 0.018 0.023D 6.500 6.700 0.256 0.264D1 5.100 5.460 0.201 0.215 D2 4.830 TYP. 0.190 TYP.E 6.000 6.200 0.236 0.244e 2.186 2.386 0.086 0.0940.386 0.409L 9.80010.400L1 2.900 TYP. 0.114 TYP.L2 1.400 1.700 0.055 0.067 L3 1.600 TYP. 0.063 TYP.L4 0.600 1.000 0.024 0.039 Φ 1.100 1.300 0.043 0.051 θ0°8°0°8°h 0.000 0.300 0.000 0.012V 5.350 TYP. 0.211 TYP.Attention:■Any and all NCE power products described or contained herein do not have specifications that can handle applications that require extremely high levels of reliability, such as life-support systems, aircraft's control systems, or other applications whose failure can be reasonably expected to result in serious physical and/or material damage. Consult with your NCE power representative nearest you before using any NCE power products described or contained herein in such applications.■ NCE power assumes no responsibility for equipment failures that result from using products at values that exceed, even momentarily, rated values (such as maximum ratings, operating condition ranges, or other parameters) listed in products specifications of any and all NCE power products described or contained herein.■Specifications of any and all NCE power products described or contained herein stipulate the performance, characteristics, and functions of the described products in the independent state, and are not guarantees of the performance, characteristics, and functions of the described products as mounted in the customer’s products or equipment. To verify symptoms and states that cannot be evaluated in an independent device, the customer should always evaluate and test devices mounted in the customer’s products or equipment.■ NCE power Semiconductor CO.,LTD. strives to supply high-quality high-reliability products. However, any and all semiconductor products fail with some probability. It is possible that these probabilistic failures could give rise to accidents or events that could endanger human lives, that could give rise to smoke or fire, or that could cause damage to other property. When designing equipment, adopt safety measures so that these kinds of accidents or events cannot occur. Such measures include but are not limited to protective circuits and error prevention circuits for safe design, redundant design, and structural design.■ In the event that any or all NCE power products(including technical data, services) described or contained herein are controlled under any of applicable local export control laws and regulations, such products must not be exported without obtaining the export license from the authorities concerned in accordance with the above law.■No part of this publication may be reproduced or transmitted in any form or by any means, electronic or mechanical, including photocopying and recording, or any information storage or retrieval system, or otherwise, without the prior written permission of NCE power Semiconductor CO.,LTD.■Information (including circuit diagrams and circuit parameters) herein is for example only ; it is not guaranteed for volume production. NCE power believes information herein is accurate and reliable, but no guarantees are made or implied regarding its use or any infringements of intellectual property rights or other rights of third parties.■ Any and all information described or contained herein are subject to change without notice due to product/technology improvement, etc. When designing equipment, refer to the "Delivery Specification" for the NCE power product that you intend to use.■This catalog provides information as of Sep.2010. Specifications and information herein are subject to change without notice.。
(新教材)2022版北师大版英语选择性必修第一册同步练习：UNIT 2 Period 4 (含答案)
UNIT 2Period Four题组A基础练(建议用时：10分钟)Ⅰ．单词拼写1．The ________(条目) will help you find your key words easily.2．His hope for the new job has been completely ________(毁坏)．3．We had to launch a ________(自卫的) war against that country.4．Many traditional Chinese ________(元素) have been included in this festival.5．The old man has experienced ________(无数的) difficulties and hardship in his life.6．All these bikes by the road are for ________(租用)．7．Mother had ________(煮) some eggs for the boy before he went to school.8．The ________(巨大的) animal frightened all the children as soon as they saw it.9．As a(n) ________(普通的) student, the boy has to work harder to catch up with other excellent students.10．Dr. Zhong Nanshan is one of the most ________(杰出的) scientists in the world.【答案】1．entry2．ruined3．defensive4．elements5．countless6．hire7．boiled 8．enormous9．average10．outstandingⅡ．单句语法填空1．Every day, Mikes runs a ________(long) of five miles to keep himself fit.2．Only by applying ________(you) to your lessons, can you do well in them.3．The building will be strong enough to remain standing in earthquakes with high ________(intense)．4．As you know, water ________(boil) at 100 degree centigrade.5．She must ________(pass) her driving test as she looks so excited.6．As a teacher, Mr. Li has been totally committed ________ his work and duty.7．No matter ________ you are, you should keep to the law.8．Mrs. Wang does all the housework ________ her husband does none of it.9．Only those who work with great ________(determine) will reach their goals in the end.10．She prefers ________(walk) to school to riding in the crowded bus.【答案】1．length2．yourself/yourselves3．intensity4．boils5．have passed6．to 7．who8．while9．determination10．walkingⅢ．完成句子1．You ________ ________ ________ here five minutes ago.你五分钟前就该到这里了。
unit2-nce4市公开课一等奖省赛课微课金奖PPT课件
Cultural Notes
• Automobile industry • mass production: making several products
at once, rather than one at a time. • mass marketing: selling products
Unit 2
Smart Cars
1/30
Discussion:
If you could afford a car, you may not want to drive one because…….
List the reasons why you don’t want to drive a car.
6/30
❖ trailer truck 拖车 ❖ sports car 跑车 ❖ formula car 方程式赛车, 方程式汽车 ❖ mail car 邮车 ❖ jeep 吉普车 ❖ bloodmobile 血浆车 ❖ bumper car 碰撞用汽车 ❖ camper 露营车 ❖ police car 警车 ❖ wrecker 清障车 ❖ ambulance 抢救车
For example: 1. 我昨天碰到塞车近一个小时，这就是为何我没
赶上飞机。 • I was stuck in the traffic yesterday for
about one hour. That’s why I missed the plane. 2. 我因流感呆在家里。 • I was stuck at home with flu.
22/30
Para. 8
Convert: change from one form or use to
洪恩幼儿英语4 unit 2 -回复
洪恩幼儿英语4 unit 2 -回复对于洪恩幼儿英语4 unit 2的主题，我将一步一步回答并写一篇1500-2000字的文章。
标题：Exploring the World with Young Learners - Unit 2 of Hong'en Preschool English引言：洪恩幼儿英语4是为年幼的学习者设计的课程，旨在通过生动有趣的故事和活动，帮助孩子们学习与自然环境相关的词汇和知识。
在本篇文章中，我们将深入探讨洪恩幼儿英语4的第二单元，该单元的主题是“探索世界”。
我们将详细介绍该单元的内容和教学方法，并提供一些有趣的活动和游戏，以帮助孩子们更好地理解和记忆所学内容。
正文：第二单元的主题是“探索世界”。
该单元旨在帮助孩子们了解和学习关于自然环境的词汇和知识，包括动物、植物、天气和季节等。
下面将一步一步介绍单元中的不同部分。
部分一：主题介绍在这个部分，教师可以使用一些视觉辅助工具，比如图片和视频来让孩子们感受不同的自然环境，并引发他们的好奇心和兴趣。
可以播放一段有关动物和植物的视频，并用简单明了的语言向孩子们介绍这些内容。
同时，引导孩子们发表对于自然环境的看法和喜好，例如喜欢哪些动物和植物，想要了解什么样的天气和季节等。
部分二：词汇学习在这个部分，教师可以以游戏的形式帮助孩子们学习与自然环境相关的词汇。
可以使用卡片游戏或者印有相关图片的拼图游戏，让孩子们通过配对词汇和图片的方式来记忆和学习新单词。
教师可以逐个展示图片，并在提示下让孩子们说出对应的单词，然后让他们一起参与游戏，找出正确的配对。
部分三：故事时间在这个部分，教师可以选择一些有关自然环境的故事，例如动物的故事和植物的成长故事。
通过阅读故事，孩子们可以进一步了解和学习有关自然环境的知识，并培养他们的阅读理解能力。
同时，教师可以鼓励孩子们对故事内容进行讨论和思考，例如故事中的动物为什么要离开家，植物是怎样生长的等等。
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Para. 7
Get/ be stuck in (sth): be unable to move or to be move For example: 1. 我昨天遇到塞车近一个小时，这就是为什么我 没赶上飞机。 • I was stuck in the traffic yesterday for about one hour. That’s why I missed the plane. 2. 我因流感呆在家里。 • I was stuck at home with flu.
• 不带if 的虚拟条件句： • had should were • Should they forget to bring a compass with them, they would get lost in the woods. • Were it not for… • Had it not been for… • 要不是，若没有
first gear 一档 second gear 二档 reverse 倒车档 diesel 柴油机 limousine 豪华轿车 drophead 活动车篷汽车 (美作:convertible) racing car 赛车
roadster 敞蓬车 notchback 客货两用车 four-wheel drive 四轮驱动 front-wheel drive 前轮驱动 trailer 拖车 station wagon 小旅行车
• Automobile industry • mass production: making several products at once, rather than one at a time.
• mass marketing: selling products nationally and globally wide. • globalization of production: assembling products with parts made world-wide
windscreen windscreen wiper 前窗 雨刷 sunroof trunk 天窗 后箱 headlight rear light fog light 前灯 尾灯 雾灯 side mirror rearview mirror 侧视镜 后视镜 steering wheel horn 方向盘 喇叭 seat belt gas pedal 安全带 油门 brake hand brake 刹车 手刹
Para. 8
Convert: change from one form or use to another (followed by into / to)
For example:
• Hitler converted Germany into a militarized society. • A solar cell converts radiation from the sun into electricity.
Unit 2
Smart Cars
Discussion:
If you could afford a car, you may not want to drive one because……. List the reasons why you don’t want to drive a car.
• 老师警告学生在河中游泳是危险的。 • The teacher alerted the students to the danger of swimming in the river.
Para. 5
• _______ us everything, we could try to solve his problem. • A. Would he tell B. Were he to tell • C. If he tells D. If he had told • • • • • Had he worked harder, he _____ exams. A. must have got through B. would have got through C. would get through D. can get through
truck 卡车 compact car 小型汽车 light-van 小型货车 garbage truck 垃圾车 automobile carrier 货运卡车 fire engine 消防车 tractor 牵引车 ambulance 救护车 taxi 出租车, 出租车
• Computers seem to become a new blind spot with many old people.
Language Points
Para. 2
Lucrative: producing much money; profitable
For example:
• 据说开网吧是很赚钱的。 • It is said that running a net bar is a lucrative business.
Cultural Notes
Global Positioning System
• Space-based radionavigation system, consisting of 24 satellites and ground support.
Blind Spot（盲点）
• A position of the road behind a car, which a driver cannot observe from the rear-view mirror.
Para. 6
Hazard: a thing that can be dangerous or cause
damage, a danger or risk
For example: • 研究证明吸烟危害健康。 • The research has confirmed that smoking presents a hazard to health. • The dispute between two developed countries will become a hazard to the peace of world
Text Organization
Part three: Paras10-13: GPS and “telematics” will make it possible to build smart highways, which will benefit us in more than one way.
• making it the world’s biggest manufacturing industry. 宾补 • Combine the following pair of sentences by using “it” as the formal object. • You were unable to attend our meeting. • We all thought that was a pity. • We all thought it a pity that you were unable to attend our meeting.
Para. 4
eliminate : remove sth that is not wanted or needed; get rid of (used in eliminate sth. from sth)
For example: • The curriculum ignored the natural interests of children and so eliminated the children’s motivation. • 如果你认为你对某种食物过敏就不要纳入你的食谱中。 • If you think you may be allergic to a food , eliminate it from your diet.
Beautiful Expressions
• 严重低估
• • • • • grossly underestimate 威胁生命的重大隐患 life-threatening hazard 令人头疼的事情 frustrating things
• • • • • • • • • •
•
积极的影响 positive impact 塞车 get stuck in traffic 确定方位 determine the location 大幅度下降 drop drastically 完全控制 take complete control of
Para. 4
Alert: warn sb. that there may be danger, trouble, etc. (alert sb; alert sb to sth) For example:
• The manager alerted the staff to the crisis facing the company.
Para. 12
take control of: control
• As a qualified manager he knew well how to take control of his staff and company. • • • • seize the control of beyond control out of control under control
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