青少版新概念Unit 21 新概念2第21课解析
新概念第二册21课
新概念第二册21课第一篇：新概念第二册21课21课上课时间：上课地点：教学用书：新概念二教学目标: 掌握生词和短语①mad，reason，sum，② be mad about/on sth，the reason for sth …理由教学重难点：①determine on sth 决定做某事/determine to do sth ②表“许多”的短语：如a great many + pl.a number of + pl.③come into use，关于knock的短语教学过程:New words and expressions 1.mad adj.发疯的①be mad 发疯，发狂（强调状态）go mad 发疯，发狂（强调转变）drive sb mad 逼疯②be mad about/on sth对…疯狂的，狂热的He is mad on football 他对足球狂热。
2.reason 1)n.原因for this reason 由于这个原因for some resson 由于某个原因(some: 某一个，加可数名词单数)give a reason 提出理由the root reason 根本原因the reason is that… 理由是…the reason why…is that… …的理由是…eg.The reason why I study English is that I envy those who speak English well.我学习英语的理由是我羡慕那些讲英语很好的人。
the reason for sth …理由eg.What’s the reason for your absence? 你缺席的理由是什么？the reason to do sth 做某事的理由eg.Is there any reason to go there? 有去那儿的理由吗？ 2)理性，正常心智eg.Only man has reason.只有人类才有理性。
新概念英语第二册课后习题答案详解Lesson 21
新概念英语第二册课后习题答案详解Lesson 11. b选b最为正确。
因为a.d.都与课文内容不符合，也不合乎逻辑；c.的意思是“他们没有注意他”，而作者的意图并不是想让他们注意他，而是想让他们停止谈话。
所以选b. 最能表达作者当时心里的感受。
2．c其余3个答案都与原句意思不符合。
3．b因为a. to 不对，可以是He went to the theatre;c. into 也不对，可以是He went into the theatre;d. on更不符合语法，表示在某一个地方用介词in 或at, in 表示在大的空间，如国家，城市等，at 则表示在小的地点或空间，如atthe office, at the theatre 等, 所以选b.是正确的。
4．db. above(在……上方)；c. ahead of (在……的前面，在……之前)不和behind 对应，也不强调位置的前后顺序。
a. before 和 d. infront of 都是和behind对应的，都有“在……前面”的意思。
但in front of 更具体的强调位置，而before则包含更宽泛的意思，即时间上，空间，次序，登记，重要性方面的“在……前面”5．c因为用 a. Where, b. why, d. when 提问都不符合逻辑，都不是针对状态提问的，只有How提问，才能用Angry回答。
6．ab. they 只做主语；c. their只能做定语；d. us 虽然可以做宾语，但与前一句意思不符合。
7．da. none是代词，很少用在名词前面；b. any 只能用在否定句或疑问句中；c. not any 不符合语法，因为前面没有助动词did.8.ba. chair(椅子)， c. armchair(手扶椅) d. class(班级) 这3个选择都和seat的意思不符合。
Seat是”座位，座席”的意思。
强调的是可供坐下的地方，不是具体的椅子。
新概念第二册第21课课件PPT Lesson21
there
life a long time ago.
A.must be been
D.could be
knock sb down&knock sth down 她被公交车撞到了 She was knocked down by a bus These old houses will be knocked down 我撞到了一个小孩
drive()驱使,逼迫
drive sb to do=make sb. doHunger drove her to steal
这次经历驱使我学德语
drive sb +adi The noise drives me crazy
考试逼得我很紧张
doing+名词 (主动+进行） falling leaves developing country 一张笑脸 一辆正在疾驰的车
C.might put
D.might have put
Don’t be so worried about that. John A. may leave B. must leave C. could have left D. can have left
a note.
Although there is no life on Mars (火星） now, some scientists think that
(上海27) It
have been Tom that parked the car here,
because he is the only one with a car.
A.may
B. can
C. must
D. should
(天津6)She
新概念青少版2b Unit21
rain [rein] n.雨
gradually [ˌgrædj ʊəlɪ] adv.逐渐地
rise 上升
degrees Celsius 摄氏度
fall [fɔ:l] v.降落, 落下
outlook [‘autluk] n.景色, 景致，展望
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LESSON 42
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move [mu:v] vt. & vi.移动; 搬动
yet [jet] adv.还, 尚, 仍然
last [lɑ:st] adv.最近一次的，延续; 继续；
train [trein] n.列车, 火车；
Pronunciation
Pattern Practice
Listening
There will be There won`t be Will there be a Yes,there will. a computer in a computer in compuer in it. No,there it. it. won`t. They will do heavy work.
2014-6-28
They won`t do heavy work.
Will they do heavy work?
Yes,they will. No,they won`t.
Functional Practise：
C １.Ｉhope that you＿＿ a good time this evening. A.have B.are having C.will have D.has D 2.Look at those big black clouds. It ＿＿ rain.Let`s hurry. A.must B.will C.would D.is going to
新概念英语第二册Lesson21课件
Aeroplanes are slowly driving me mad. 逼迫，迫使 He drives his car very badly. 驾驶，开车 Our army drove the enemy back. 逼迫，迫使
Notes on the text
New words and expressions Text & Key points Grammar
What do we use it for? We use it to type. It is used to type.
What is “be done”?
构成
be + done
Many people speak English.
years前面不加确定的数词时，一般表示“许多年” years ago = many years ago week类似 e.g. I have not seen him for weeks.
Notes on the text
for some reason 由于某个理由
some+ cn单数： 某一 some book some+ cn复数： 一些 some books some+ un ： 一些 some water
➢ drive sb. mad 逼某人发疯
e.g. His new hairstyle drives him mad.
Notes on the text I live near an airport and passing planes can be heard night and day.
night and day 日日夜夜，夜以继日 passing planes 过往飞机
新版 新概念英语二册讲义--21
• go mad
发疯
• = go crazy
• =go bananas
• They are going mad/craze/bananas.
reason n. 原因
• For this reason 因此
由于这个原因；为此，
• For this reason, I was late.Βιβλιοθήκη • reason for…
…的原因
• The reason for the flood was that heavy rain.
• 水灾是那场大雨造成的。
• as+句子
由于……
• because+句子 由于……
• because of +名词或代词
• for + 句子
sum
n. 量
• 总额；总和 • a sum of +不可数名词 一笔…，大量… • 一大笔… • a large sum of …… (large 指数量的大) • 一大笔钱
• 某个幸运儿昨天中了彩票。
• 4. Last year, however, it came into use.
• come into use 启用，开始被使用（没有 被动式）
• The road came into use last month. • 这条路上个月开始使用。 • When did the train come into use?
• a great many + 可数名词复数 • a great number of + 可数名词复数 • plenty of… 足够多的…
• We still have plenty of water for the next 20 days.
Unit21Theweatherforecast.知识点(讲义)新概念英语青少版2B
Unit 21 The weather forecast 天气预报一、重点单词及拓展：1.rain 名词，雨；动词，下雨（普通动词，有时态的变化）1）不可数名词，雨例：There will be rain tomorrow. 明天将有雨。
2）动词，下雨三单rains, 现在分词raining, 过去式rained例：It will rain tomorrow. 明天将下雨。
It is raining heavily now. 现在雨下得很大。
3）rainy形容词，多雨的，阴雨的例：It is always rainy in Tianjin in July . 在天津，7月份总是多雨。
补充：snow（名词，雪；动词，下雪，和rain 用法相同）2.rise和raise的区别1）rise 不及物动词（vi），后面不能直接接宾语，意思是升起、上升、起床等，过去式为rose。
rise也可以做名词使用，表示上涨、提升等意思。
例：The sun rises in the east. 太阳从东方升起。
My parents rise very early. 我父母起床很早。
2）raise及物动词（vt）,后可直接接宾语，意思是举起、升起、增加、饲养等，过去式为raised。
例：He raised his voice. 他提高了嗓音。
I can’t raise the box. 我举不起这个箱子。
He is a farmer and raises horses. 他是农民, 同时又养马。
拓展短语：raise one’s hand举起手raise one’s hat 脱帽致意raise one’s voice 提高嗓门raise a family 养家糊口造句练习1：1）昨晚下了一夜的雨。
2）夏天是个多雨的季节。
你要随时准备好雨伞。
3）当太阳升起的时候，人们会感到温暖。
4）请先举手，再回答这个问题。
3.bring 动词，带来；引起；导致过去式为brought1）带来，通常指把人或事物带到讲话人或听话人所在之处，对应词为take（拿走）例：Did you bring my book this time? 你这次有把我的书带来吗？结构：bring+人/物to...例：She brought her friend to the party. 她带着朋友来参加聚会。
新概念二 第21课课件
We'll talk about it some other time.
课文注释
课文注释
3. The airport was built years ago, but for some reason it could not be used then. 机场是许多年前建的，但由于某种原因当时未能启用。 (1)years 前面不加确定的数词时，一般表示“许多年”，weeks等的用法与它相似: He left the city years ago. 他多年前就离开了这座城市。
• 4.determined (1.8)/dr't3:mind/adj.坚定的,下决心的
·★1. mad
1.sb. be mad I must be mad! 我一定是气坏了！ 2.be mad at sb生某人的气 You're just mad at me because I don't want to go. 因为我不想去，你就对我火冒三丈。 mad at也可以和get搭配，表示变得对某人生气 You got mad at me then, too. 你那时候也对我不爽了。
新概念二
第21课 Mad or not？
1.New words 2.text
3.grammer
New words and expressions
New words and expressions
• 1.mad (l.1)/mæ d/ adj. 发疯
(最新整理)新概念第二册第21课课件
I have been offered a large sum of money to go away, but I am determined to stay here.
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他们曾向我提供一大笔钱让我搬走，但我决定 留在这儿
(最新整理)新概念第二册第21课课件
2021/7/26
1
Lesson 21
Mad or not?
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2
New words
mad
[mæd]
adj.发疯
reason
['ri:zən]
n.原因
sum
[sʌm]
n.量
determined [di'tə:mind] adj.坚定的，下决心的
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Special difficulties
Drive
1、drive 开车
2、drive sb. mad 把某人逼疯
3、drive sb.back 把某人撵回去
4、drive …into 把……赶进
5、drive out of 赶出……
6、他开车开得很糟糕。
7、农夫把牛赶进田里。
8、我们的军队把敌人撵了回去。
9、战争期间，许多人被赶出了家园。
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home ,family与 house 的区别 home:家,强调有感情 house:仅仅指房子 family:家人
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• 动词语态
• 英语动词有两种语态
• 主动语态：主语是动作的执行者 • 被动语态：主语是动作的承受者
新概念二册第21课
Lesson 21 Mad or not?
Words
aeroplane n. 飞机
mad adj. 发疯
reason n. 原因
sum n. 量
determined [di'tə:mind]
adj. 坚定的，下决心的
offer
v. 提供
probably adv.可能
Lesson 21 Mad or not? 是不是疯了？
for this reason:由于这个原因
For what reason? 是为了什麽原因？
adj.reasonable 合理的，有道理的 反义词：unreasonable The price is reasonable. 价钱很合理。
Come in to use
Come into use 投入使用 The airport come into use last year.
Left
Left 作为定语的时候放在名词的后面 There is only 2 yuan lobody left in the room.
sum
名词 n. [C] 1.总计 [the sum of] She paid the sum of $200 for dresses. 她买衣服总共花了二百元钱。 2.一笔 [+of] He earned a large sum of money. 他赚了一大笔钱。
Aeroplanes are slowly driving me mad. I live near an airport and passing planes can be heard night and day. The airport was built during the war, but for some reason it could not be used then. Last year, however, it came into use.
新概念英语第二册笔记-第二十一课
新概念英语第二册笔记-第二十一课mad adj. 发疯的be mad 发疯，发狂（强调状态）go mad 发疯，发狂（强调转变）drive sb mad 逼疯/send sb madbe mad about sth 对…疯狂的，狂热的/be mad on sthbe mad on football 对足球狂热be mad on pop musicbe mad on jazzbe mad about/on sth/be crazy about…对…着迷go mad 发疯，发狂/go crazy/go insane [in'sein](歌曲“Right Here Waiting”中，”I slowly go insane…”)the insane 精神病人go bananas (sl.) become mad or angry, act very foolishly. 发疯，发怒，傻里傻气go nuts 发疯nut: (sl.) foolish, eccentric or mad personmental patient 精神病患者mental hospital 精神病医院like mad 舍命地，猛烈地，疯狂地reason1) n. 缘故reasonable adj. 合情合理的，良好的，尚可的at a reasonable price 以合理的价格eg. The plane is in a reasonable condition. 飞机的状态良好cause 导致某事发生的起因the cause of the fire 大火的起因eg. Smoking is one of the causes of lung cancer. 吸烟是肺癌的起因之一。
reason1) n. 缘故for this reason 由于那个缘故for some resson 由于某个缘故( some: 某一个，加可数名词单数)/for a certain reasongive a reason 提出理由the root reason 全然缘故the reason is that…理由是…the reason why…is that……的理由是…eg. The reason why I study English is that I envy those who speak English well.我学习英语的理由是我仰慕那些讲英语专门好的人。
新概念青少版2Bunit21ppt课件
41
Picture 2
Weather forecaster:
Thanks John, and good morning! Last month was unusually cold and dry. But all that will change in the next few days.
42
Picture 3
Weather forecaster:
From today, the wind will blow from the south west. It will bring in warm air from the Atlantic. And we'll have some rain.
43
Picture 4
T: What's the weather like today?
4
5
Revision
规则动词过去式的构成。
1）变化规则：
动词变化很好记，一般末尾加-ed;
如果词尾有个e，紧跟其后加个-d；
辅音加y来结尾，变y为i加-ed；
单元+单辅，双写辅音加-ed
2）读音规则：
注：特殊变化要熟记。
清后[t]，元浊[d]，[t],[d]后读[id]
10
['fɔ:kɑ:st]
forecast v.预测，预报
11
forecaster n.预报员 12
announcer
[ə'naunsə]
n.播音员，节目主持人 13
go over to 转到
14
the next few…
接下来的几个……
在接下来的几天天气将要变化。 The weather will change in the next few days.
新概念第二册第21课课件(共26张PPT)
•
17、儿童是中心，教育的措施便围绕 他们而 组织起 来。2021/8/112021/8/112021/8/112021/8/11
• 2、Our destiny offers not only the cup of despair, but the chalice of opportunity. (Richard Nixon, American President )命运给予我们的不是失望之酒，而是机会之杯。二〇二一年六月十七日2021年6月17日星期四
mad
be mad /go mad 发疯 drive sb. mad把某人逼疯 be mad about =be crazy about 对……疯狂
I am mad about jazz.
reason
①[n]原因 for some reason 由于某种原因
come into use. 启用
•
•
11、一个好的教师，是一个懂得心理 学和教 育学的 人。2021/8/112021/8/112021/8/11Aug-2111- Aug-21
•
12、要记住，你不仅是教课的教师， 也是学 生的教 育者， 生活的 导师和 道德的 引路人 。2021/8/112021/8/112021/8/11Wednesday, August 11, 2021
S+ was/were+being+ P.P.
He will repair your watch. Your watch __w_i_l_l_ __b__e__ r_e__p_a_i_r_e_d_ by him.
They must test this new car. This car__m__u_s_t_ __b_e____ ___t_e_s_t_e_d__.
新概念二第21课、 22课的课文及讲解、课后答案
新概念21课课文Why do people think the writer is mad?Aeroplanes are slowly driving me mad. I live near an airport and passing planes can be heard night and day. The airport was built years ago, but for some reason it could not be used then. Last year, however, it came into use. Over a hundred people must have been driven away from their homes by the noise. I am one of the few people left. Sometimes I think this house will be knocked down by a passing plane.I have been offered a large sum of money to go away, but I am determined to stay here. Everybody says I must be mad and they are probably right.Key words and expressionsdrive sb. mad 使某人发疯passing adj.过往的night and day 日夜不停的come into use 开始被使用knock down 撞倒be determined to do sth.offer vt 提供,开价可跟双宾语同giveLanguage points一drivedrive sb. crazy/insane 使某人发疯①Over a hundred people must have been driven away from their homes by the noise. drive away 把…赶走②I was driven by my curiosity to look into the window. 驱使③what are you driving at? 说明…二for some reason 由于某种原因for one reason or another 由于这样或那样的原因for various reasons 由于各种原因for different reasons 由于不同的原因三come into use 开始被使用when did the bank note come into use?=> be out of use 不再被使用that telephone is out of use now.四I am one of the few people left. Few :少数, 比a few 的数量还要少.Very few people know this. There is nothing left. Left 剩下来的五be determined to do sth. 下定决心做某事=decide to doDetermined 下定决心的坚定的Key structure 被动语态文中划线部分加by强调动作执行者,可省略. 可翻译成有人…1．何时运用被动语态：（1）强调动作的接受者：America was discovered by Columbus.（2）不知谁是动作的执行者：You are wanted on the phone.（3）作客观说明：It is said that the meeting has been put off.（经典句型）2．主动变被动的基本方法：（说起来容易，掌握起来需要用心！）（1）主动语态中的宾语变为被动语态的主语。
新概念英语第二册：第21课课文详解及语法解析
新概念英语第二册：第21课课文详解及语法解析-CAL-FENGHAI.-(YICAI)-Company One1新概念英语第二册：第21课课文详解及语法解析课文详注 Further notes on the text1.I live near an airport and passing planes can be heard night and day. 我住在一个机场附近，过往飞机日夜不绝于耳。
(1)passing 是现在分词，作形容词用，表示“经过的”、“过往的”：He stopped a passing car.他挡住了一辆过往汽车。
He forgot the man with passing time.随着时间的消逝，他忘掉了那个人。
(2)night and day是固定短语，意为“日日夜夜”、“夜以继日”：He thought of the matter night and day.他日夜在想这个问题。
He worked night and day.他夜以继日地工作。
2.The airport was built years ago, but for some reason it could not be used then. 机场是很多年前建的，但因为某种原因当时未能启用。
(1)years 前面不加确定的数词时，一般表示“很多年”，weeks等的用法与它相似：He left the city years ago.他多年前就离开了这座城市。
I have not seen him for weeks.我已经有好几个星期没见他了。
(2)some 在这里不表示“一些”，而表示“某个”、“某种”等：I'll tell you someday.有一天我会告诉你的。
We'll talk about it some other time.我们改日再谈这件事。
3.…it came into use. ……机场开始使用了。
新概念英语第二册第二十一课课后习题答案详解
新概念英语第二册第二十一课课后习题答案详解新概念英语第二册第二十一课课后习题答案详解Lesson 211. c根据课文第3-4行Last year, however, it came into use, 只有c. came into use recently 比较接近课文的实际内容，而其他3个选择都不符课文内容。
2. d根据课文第8行…but I am determined to stay here, 只有d. has refused to leave his house 与课文内容相符，其他3个选择都与事实不符。
3. c只有选c. can hear 才能使这个句子同前一句Passing planes can be heard night and day 的含义相同，只是语态不同。
而其他3个选择a. can heard, b. can to hear, d. can be heard 都不符合语法，在意思上都讲不通。
4. d 只有d. possible 才能使句子同前一句It couldn't be used then 意思最接近。
a. able (能)需要人作主语，本句的主语是it 形式主语;b. allowed(允许)不符合题目的意思， c. impossible(不可能的)与句子意思相反。
5. a 前面句子Over a hundred people must have been driven away 中的must 表示说话人的一种主观推测。
b. I’m sure(我确信) 语气比较肯定，不表示推测;c. Certain(肯定的)是形容词，缺主语和谓语，不符合语法和题目意思。
; d. Of course(当然) 表示“肯定”的意思，也不够准确; 只有a. I think(我想，我认为) 表示推测，所以应该选a.6. c 只有c. are some left 才能使这个句子比较接近前一句I am one of the few people left,因为few(少数几个)同some(一些)意思比较接近, a. are none left(一个没剩)不等于the . is one left(剩下一个)也不等于the few;d. are a lot left(剩下很多)与the few 意思相差悬殊.所以选c.7. b 这是一个疑问句，需要主谓倒置语序。
新概念2第21课课件
• • • • •
表“许多”的短语： a great many + pl. a great/large number of + pl. an amount of (money) a (large)sum of (money)修饰货币
sum n. 量
n. 大意，要旨 the sum of a speech 演讲大意 sum up (1) 合计 sum up all the expenses 把所有的花费加起来 (2) 总结，概括 eg. To sum up, he agrees with us. 总的来说，他同意我们的观点。 in sum = in a word / in short / in brief 总之，要言之
sleeping •a __________(sleep)boy ＝ a boy who is sleeping
talking •The man_________ (talk)with my father is Mr. Wang.
developing •China is a __________(develop)country.
determined adj 坚定的，下决心的
determine vt. 决定，确定，影响 determine a date for a meeting 确定开会的日期 determine on sth 决定做某事 determine to do sth eg. We determined to study English hard. 我们决定要努 力学习英语。 be determined to do sth.下决心做某事 eg. I am determined to stay here. 我决定留下来。 表示下决心做某事，句型知多少？ make up one’s mind to do sth decide to do sth make a decision to do sth
新概念第二册21课
? 例：My bag has been stolen.
我的包己经被偷走了。
? 例: This point has not been covere语态 ? can／could be+过去分词must be十过去分词 ? may/might be+过去分词must have been+过去分词 ? 例：Your watch can be repaired. 你的表能够被修理。
? 战争期间，许多人被赶出家园。
2、I live near an airport and passing planes can be heard night and day
? (in fact the noise of passing planes can be heard night and day) （借喻）
? eg. I couldn' t hear the actors.
? → I couldn' t hear the actors' words.
? night and day/day and night表日夜
3、The airport was built years ago, but for some reason it could not be used then.
? “决定做某事”的表达： ? determine to do sth ? make up one' s mind to do sth ? decide to do sth ? make a decision to do sth ? ( decision n.) ? be determined to do sth
Lesson 21 Mad or not? 是不是疯了
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7.sting vt.刺痛；使苦恼；欺诈 vi.叮；刺痛 n.刺；刺痛；讽刺 Most flies do not sting. 大多数苍蝇不叮人。 My tooth stings. 我牙痛得厉害。 His remarks stung. 他的话刺人。
8.poison n.毒药；毒害；vt.毒害；摧毁；中毒 He tried to kill himself by taking poison. 他曾试图服毒自杀。 Spiritual rubbish can poison the children's pure minds. 精神垃圾能毒害孩子们的纯洁心灵。
Unit 21
Mad or not?
a).drive Aeroplanes are slowly driving me mad. He drives his car very badly. The farmer drove the cattle into the field. Our army drove the enemy back. During the war,many people were driven out of their homes.
1.An invasion of jellyfish
Invasion---invade 侵略；侵入 invade的基本意思是“侵犯”“侵略” “涌入”,可指派军队侵略某个国家, 侵犯某人的权利,病毒、病菌侵入人体 或大批人涌向或涌入某地等。
They are determined to resist invasion. 他们决定抵抗入侵。 When did the Romans invade Britain? 古罗马人是何时侵略英国的? invade one's p_r_iv_a_cy___ 侵犯了某人的隐私权 invade one's r_ig_h_ts___ 侵犯了某人的权利
3.belong vi.应归入；属于 What party do you belong to? 你属于哪一党派？ You and I belong to different political camps. 你和我属于不同的政治阵营。 We belong together. 咱们在一起,正合适。
Reading
appearance n.出现；露面；外貌；外表； We should not judge a person by his appearance. 我们不应该以貌取人。 She was a young woman of good appearance. 她是一位年轻美貌的女子。
4.off Wales and Scotland 离…；在…的外面： only ten nautical miles off the main land 离大陆仅10海里 Keep off the Grass! (告示)勿踏草地!
Do you find that garlic repeats? 你是否觉得吃过大蒜后嘴里有气味
?
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2.tiny adj.极小的；微小的
The baby put his tiny hand in mine. 那个婴儿把小手放在我的手中。 She keeps a tiny cat. 她养了一只猫崽。 tiny amount 微小额 tiny island 小岛 tiny baby 个儿小的婴儿
3.appear vi.出现；出版；显得；好像； An article about him appeared in the paper. 一篇有关他的文章在报上发表。 She appeared very confident. 她显得很自信。 The room appeared much brighter than usual . 这屋子看来比平时亮得多。
6.make a living It is not so helpful to give someone some bread as to teach him how to make a living. 与其说给人面包很有帮助，倒不如说教导他如何 谋生才重要。 How do people make a living in the steppe? 生活在没有树木的大草原上的人们怎样谋生呢？
2.Initial n.(词)首字母 adj.开始的；最初的；字 首的 This is a letter paper with his initials. 这是一张有他姓名 首字母的信纸。 The initial reaction has been great. 最初的反应极好。
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poisonous adj.有毒的;恶意的 Some mushrooms are poisonous. 有些蘑菇有毒。
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9.repeat n.重复；反复 v.重复；复述 adj.重复的；反复的
Can you repeat what I've just said word for word?你能一字不差地复述我刚才说过的话 吗? Don't repeat the same mistake. 不要重复同样的错误。
5.float v.漂浮；浮现；n.浮标；漂浮物；漂浮 float的基本意思 是指在空气中、水面上 或其他平滑的表面上 轻盈地漂浮或不费力 地迅速滑动,引申可指 汇率、价格浮动,也可指人漫无目的地游来荡去。 There is not enough water to float the ship. 没有足够的水使船漂浮起来。