人教版九年级英语第十三单元知识点总结

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人教版九年级英语unit13知识点归纳

人教版九年级英语unit13知识点归纳九年级英语Unit 13知识点归纳在九年级英语的学习中，Unit 13是一个重要的单元，主要讲解了电影制作和电影评论的相关内容。

通过学习这个单元，我们可以了解到电影行业中的一些常用术语和表达方式。

本文将对Unit 13的主要知识点进行归纳总结。

一、单词和短语1. script: 剧本2. plot: 情节3. character: 角色4. scene: 场景5. dialogue: 对话6. director: 导演7. actor: 演员8. actress: 女演员9. cinematography: 摄影10. special effects: 特效11. soundtrack: 配乐12. box office: 票房13. premiere: 首映式14. sequel: 续集15. genre: 类型二、句型和语法1. 形容词比较级和最高级：例如"The film is more interesting than I expected."和"This is the best movie I've ever seen."2. 定语从句：例如"The actor who played the main character did a great job."3. 被动语态：例如"The film was directed by a famous filmmaker."4. 特殊疑问句：例如"What do you think of the actress in the movie?"5. 宾语从句：例如"He asked me what I thought of the film."三、听力技巧1. 听清语音：要注意区分不同的发音，特别是元音和辅音的区别。

九年级人教版英语unit13知识点

九年级人教版英语unit13知识点Unit 13: Knowledge for 9th GradersAs students progress through their academic journey, they encounter various subjects that challenge their intellect and broaden their horizons. Among these subjects, English serves as a powerful tool for effective communication, cultural appreciation, and personal growth. Let us delve into Unit 13 of the 9th-grade People's Education Press English textbook to explore some key aspects.1. Vocabulary Expansion:Unit 13 introduces students to a plethora of new words and phrases associated with the theme of "Holidays and Celebrations." Understanding and mastering new vocabulary is crucial for comprehending texts in English. Whether it be words like "traditional," "parade," or "costume" or phrases like "come along," "take part in," or "dress up," students must actively practice incorporating them into their written and spoken language.2. Grammar:Grammar forms the backbone of any language. In Unit 13, students dive into the realm of the Present Perfect Tense. This tense is essentialfor expressing actions that have occurred in the past but have a connection to the present. Through examples such as "I have seen this movie before" or "She has already finished her homework," students learn to convey experiences, accomplishments, and unfinished actions in a concise manner.3. Reading Comprehension:Reading comprehension is a crucial skill for students to cultivate. In this unit, students explore various texts related to holidays and celebrations. They learn to identify main ideas, infer meaning from context, and analyze the author's purpose. By practicing comprehension strategies, such as skimming and scanning, students improve their ability to extract information efficiently from written texts.4. Listening Skills:Effective listening skills are invaluable for successful communication. Unit 13 provides ample listening activities that challenge students' ability to understand spoken English from different accents and contexts. By engaging in various tasks, such as listening for specific details or completing gaps in a transcript, students develop their auditory processing skills, sharpen their focus, and enhance their overall listening comprehension.5. Speaking and Presentation:In Unit 13, emphasis is placed on developing students' speaking and presentation skills. Through interactive activities like group discussions, role-plays, and presentations, students gain confidence in expressing their opinions, supporting their arguments, and engaging in meaningful conversations. These exercises help students break free from the fear of making mistakes and foster an environment of active participation and collaboration.6. Writing Skills:Writing is a cornerstone of effective communication. In this unit, students refine their writing skills by crafting compositions centered around holidays and celebrations. They learn to organize their ideas coherently, incorporate appropriate vocabulary and grammar, and craft engaging introductions and conclusions. Through practice and feedback, students gain the necessary skills to express themselves in writing effectively.Unit 13 of the 9th-grade People's Education Press English textbook provides a comprehensive framework for students to acquire language proficiency, critical thinking skills, and cultural awareness. By expanding vocabulary, understanding grammar concepts, developing reading comprehension, honing listening skills, enhancing speaking andpresentation abilities, and refining writing skills, students embark on a journey of linguistic growth and self-expression. With dedication, perseverance, and guidance from their teachers, students can harness the power of Unit 13 to become confident English speakers, writers, and global citizens.。

人教版九年级英语Unit13单词、课文,知识梳理,词汇句式精讲

人教版九年级英语Unit13单词、课文/知识梳理/词汇句式精讲Unit13 单词litter[litə(r)]v. 乱扔n. 垃圾；废弃物bottom[bɔtəm]n.底部；最下部fisherman[fiʃə(r)mən]n. 渔民；钓鱼的人coal[kəul]n. 煤；煤块public[p ʌblik]adj. 公众的；公共的n. 民众；百姓ugly[ ʌgli]adj. 丑陋的；难看的advantage[ ədva:ntidʒ]n. 优点；有利条件cost[kɔst; kɔ:st]v. 花费n. 花费；价钱wooden[wudn]adj. 木制的；木头的plastic[plæstik]adj. 塑料的n. 塑料；塑胶make a difference有关系，作用，影响shark[ ʃa:(r)k]n. 鲨鱼fin[fin]n.（.鱼）鳍cut off割掉；砍掉method[meθəd]n. 方法；措施cruel[kru:əl]adj. 残酷的；残忍的harmful[ha:(r)mfl]adj. 有害的chain[tʃein]n. 链子；链条ecosystem[i:kəusistəm]n.生态系统low[ləu[ a（.数量等）减少的；低的；矮的industry[indəstri]n. 工业；行业law[lɔ:]n. 法律；法规reusable[ri:ju:zəbl]adj.可重复使用的；可再次使用的afford[əfɔ:(r)d]v. 承担得起（后果）；买得起transportation[t ænspɔ:(r)teiʃn]n. 运输业；交通运输recycle[ri:saikl]v. 回收利用；再利用napkin[næpkin]n. 餐巾；餐巾纸upside down颠倒；倒转gate[geIt]n. 大门bottle[bɔtl]n. 瓶；瓶子president[prezidənt]n. 负责人；主席；总统inspiration[inspəreiʃn]n. 灵感；鼓舞人心的人（或事物）metal[metl]n. 金属creativity[kri:eitivəti]n. 创造力；独创性WildAid[waildeid]野生救援协会（美国）WWF(World Wide Fund For Nature) 世界自然基金会Mark[ma:(r)k]马克（男名）Jason[dʒeisən]贾森（男名）Ken [ken]肯（男名）Hayes [heiz]海斯（姓）Jessica[dʒesikə]杰茜卡（女名）Unit13 知识梳理【重点短语】1. at the bottom of the river 在河床底部2. be full of the rubbish 充满了垃圾3. throw litter into the river 把垃圾扔入河中4. play a part in cleaning it up 尽一份力把它清理干净5. land pollution 土地污染6. fill the air with black smoke 使空气中充满了黑烟7. cut down air pollution 减少空气污染8. make a difference 产生影响17. take action 采取行动18. turn off 关掉19. pay for 付费20. add up 累加21. use public transportation 使用公共交通22. recycle books and paper 回收书和废纸23. use paper napkins 使用纸巾24. turn off the shower 关掉喷头25. ride in cars 开车出行【重点句型】1.Even the bottom of the river was full of rubbish.即使河底都充满垃圾。

人教版英语九年级全册单元unit 13 知识点+测试卷+思维导图

Unit 13 We are trying to save the earth.1.重点词汇：bottom, fisherman, coal, advantage, industry, law, gate, bottle, president, work, metal...2. 短语归纳：1. be full of 充满2. get in the shower 在洗淋浴3. leave sth in sp 把某物留在某地4. by the time... 到……的时候；到……之前5. be late for class 上课迟到6. go off 发出响声7. brush one’s teeth 刷牙8. give sb a lift 捎某人一程9. be about to 即将……；正要……10. stare at 盯着看11. in disbelief 疑惑地；不相信地12. take off （飞机等）起飞13. show up 赶到14. get a chance to do sth 得到一个做某事的机会15. leave for sth 动身去某地16. sell out 卖光17. lose weight 减肥18. run out of 用完3. 必背典句：1. We are trying to save the earth. 我们正在努力拯救地球。

2. The river used to be clean. 这条河过去是干净的。

3. The air is badly polluted. 空气受到严重污染。

4. No scientific studies have shown that shark fins are good for health.没有科学研究表明鱼翅对健康有益。

4.语法知识：英语句子成分分析组成句子的各个部分叫做句子成分。

它包括：主语、谓语、宾语、定语、状语、表语和宾语补足语等。

人教版英语九年级Unit13单元知识点归纳

Unit13 We're trying to save the earth!【重点短语】1. at the bottom of the river 在河床底部2. be full of the rubbish 充满了垃圾3. throw litter into the river 把垃圾扔入河中4. play a part in cleaning it up 尽一份力把它清理干净5. land pollution 土地污染6. fill the air with black smoke 使空气中充满了黑烟7. cut down air pollution 减少空气污染8. make a difference 产生影响17. take action 采取行动18. turn off 关掉19. pay for 付费20. add up 累加21. use public transportation 使用公共交通22. recycle books and paper 回收书和废纸23. use paper napkins 使用纸巾24. turn off the shower 关掉喷头25. ride in cars 开车出行【重点句型】1. Even the bottom of the river was full of rubbish. 甚至河底都充满垃圾。

2. Everyone in town should play a part in cleaning it up. 城里的每个人都应当尽一份力把它清理干净。

3. The air is badly polluted because there are too many cars on the road thesedays. 空气被严重污染因为如今路上的汽车太多了。

4. To cut down air pollution, we should take the bus or subway instead of driving.为了减少空气污染，我们应当乘坐公汽或地铁而不是开车。

完整版人教版九年级英语第十三单元知识点总结

人教版九年级英语第十三单元知识点总结Unit13.We're trying to save the earth!一．单词litter bottom fisherman coal ugly advantage cost wooden plastic takeaway bin shark fin cruel harmful be harmful to at the top of chain the food chain ecosystem industry law scientific takepart in afford turn off reusable pay for take action transportation recycle napkin throw away putsth to good use pull...down upside gate bottle president inspiration iron work metal bring backcreativity二．1.现在进行时定义：表示说话时（瞬间）正在进行的动作，也表示目前或现阶段一直进行的动作。

结构: ①肯定句: 主语+ am/is/are + V-ing②否定句: 主语+ am/is/are + not + V-ing③疑问句: Am/Is/Are + 主语+ V-ing用法：1）表示说话时正在进行的，目前正在发生的动作。

①Look! The big bird is flying away. ②He is watching a movie now.2）表示目前一段时间内正在进行，但说话时可能没有进行的动作。

Right now I am studying Chinese by distance learning. 我现在正通过远程教育学习汉语。

1) 2)常带有表示目前时刻的时间副词, 如：now, right now, at the (very) moment, for the time being, at present, these days 及Look! Listen! ...3）与always, constantly, forever, all the time等副词连用，表示动作反复或习惯。

人教版九年级英语Unit13单元知识点梳理

一、短语：1.at the bottom of the river在河的底部2.be full of the rubbish充满了垃圾3.throw litter into the river把垃圾扔入河中4.play a part in尽一份力...nd pollution土地污染6.cut down air pollution减少空气污染7.make a difference产生影响8.take action采取行动9.ride in cars开车出行10.add up累加e public transportation使用公共交通12.recycle books and paper回收书和废纸e paper napkins使用纸巾14.turn off the shower关掉喷头15.fill the air with black smoke使空气中充满了黑烟二、知识点：1.not only...but also...的用法：(1)not only…but also…意为“不仅……而且……”，用于连接两个表示并列关系的成分，着重强调后者，其中的also有时可以省略。

如：She not only plays well,but also writes music.她不仅很会演奏，而且还会作曲。

He not only writes his own plays,he also acts in them.他不仅是自编剧本，还饰演其中的角色。

He works not only on weekdays but on Sundays as well.他不仅平时工作，星期日也工作。

(2)若连接两个成分作主语，其谓语通常与靠近的主语保持一致，即就近原则。

如：Not only you but also he has to leave.不只是你，他也得离开。

(3)若连接两个句子，not only后面的句子要用倒装，如：Not only did he speak more correctly,but he spoke more easily.他不仅说得更正确，而且讲得更不费劲了。

人教新目标九年级英语Unit13知识点总结复习(Word版)

Unit 13 W e’re trying to save the earth!知识点总结词汇过关1.v. 乱扔n. 垃圾；废弃物2. n. 底部；最下部4. n. 煤；煤块5.adj. 公众的；公共的n. 民众；百姓6.adj. 丑陋的；难看的7.n. 优点；有利条件8. v. 花费n. 花费；价钱9.adj. 木制的；木头的10.adj. 塑料的n. 塑料；塑胶11. 有关系，作用，影响12. n. 鲨鱼13. n（.鱼）鳍14.（短语）割掉；砍掉15. n. 方法；措施16. adj. 残酷的；残忍的17. adj. 有害的18. n. 链子；链条19. n. 生态系统20.adj（.数量等）减少的；低的；矮的21. n. 工业；行业22. n. 法律；法规23. adj.可重复使用的；可再次使用的24. v. 承担得起（后果）；买得起25. n. 运输业；交通运26. v. 回收利用；再利用27. n. 餐巾；餐巾纸28.(短语）颠倒；倒转29.n. 大门30.n. 瓶；瓶子31.n. 负责人；主席；总统32. n. 灵感；鼓舞人心的人（或事物33.n. 金属34.n. 创造力；独创性一．本单元语法复习：（1）现在进行时（1）含义：表示正在发生或进行的动作。

（2）基本结构：主语+ be + 现在分词（be 的形式随主语的变化而变化）（3）基本用法：①表示现在正在进行的动作。

特征：常常与now或具体的时间连用，有时句中会有感官动词来提示，或通过上下文来暗示。

②表示现阶段一直进行的动作。

这类动词常常是延续性动词。

常于at present, this week, these days等连用。

③表示主语的特征、性格、能力等(2)现在完成时（1）含义：表示过去发生的动作对现在还有影响。

（2）基本结构：主语+ have / has + 过去分词（3）基本用法：①表示过去发生的动作，但强调对现在产生影响。

人教版九年级unit13知识点

人教版九年级unit13知识点人教版九年级Unit 13 知识点Unit 13的知识点主要涵盖了三个方面：句子结构、词汇与语法。

下面将分别进行介绍。

一、句子结构1. 简单句：一个完整的句子，包含一个主语和一个谓语。

例：We watched a football match yesterday.（我们昨天看了一场足球比赛。

）2. 并列句：由两个或多个独立的简单句连接而成，它们之间用逗号或者连接词（如and，but，or等）进行分隔。

例：I like playing basketball, and my brother likes playing soccer.（我喜欢打篮球，而我哥喜欢踢足球。

）3. 复合句：一个完整的句子，由一个或多个主句和一个或多个从句组成。

例：Although it was raining, we still went hiking.（虽然下雨了，但我们还是去爬山了。

）二、词汇1. 人称代词：第一人称（I，we），第二人称（you），第三人称（he，she，it，they）。

例：He is my best friend.（他是我最好的朋友。

）2. 形容词：用于描述名词或代词的特征或属性。

例：The beautiful flowers are in bloom.（美丽的花儿已经开放了。

）3. 副词：修饰动词、形容词或其他副词，用于表示时间、地点、原因等。

例：She runs very fast.（她跑得非常快。

）4. 动词：表示动作、状态或存在的词。

例：They are swimming in the pool.（他们正在游泳池里游泳。

）三、语法1. 一般现在时：表示经常性或习惯性的动作。

例：I always go to bed early.（我总是早睡。

）2. 一般过去时：表示过去发生的动作或状态。

例：She finished her homework last night.（她昨晚完成了她的作业。

人教版九年级UNit13的知识点

人教版九年级UNit13的知识点九年级英语教材中的“Unit 13”是一个非常重要的单元，涵盖了多个知识点，包括动词的时态、被动语态、虚拟语气等。

在接下来的文字中，我将对这些知识点进行介绍和讨论。

动词的时态是英语学习中重要的一环。

九年级的“Unit 13”中，涉及到了一般现在时、一般过去时、一般将来时等时态。

一般现在时用于描述经常性的动作、习惯和普遍真理。

例如，我们常说“I go to school by bus”（我坐公交车去学校）。

一般过去时则用于描述过去发生的动作或事件，如“I watched a movie last night”（昨晚我看了一场电影）。

另外，一般将来时则表示将来发生的动作或事件，例如“We will go shopping tomorrow”（明天我们将去购物）。

除了时态，被动语态也是一个重要的语法知识点。

在“Unit 13”中，我们可以学到如何构建被动语态。

一般来说，被动语态由“be”动词（如am, is, are, was, were等）加上过去分词形式构成。

例如，“The book is written by him”（这本书是他写的）。

被动语态用于强调动作的接受者而不是执行者，使句子更加客观。

在实际运用中，我们需要注意动词的时态和语态搭配的正确性。

虚拟语气是英语语法中常见的一种用法，它用于表达与事实相反、与现实不符或者希望实现的情况。

在“Unit 13”中，我们可以学到虚拟条件句和虚拟语气的用法。

在虚拟条件句中，我们使用“if”引导从句，并在主句中使用情态动词，如“would, could, should, might”等。

例如，“If I were you, I would study harder”（如果我是你，我会更加努力学习）。

此外，虚拟语气还用于表达对过去情况的虚拟推测或对未来情况的虚拟设想，如“I wish I had studied harder”（但愿我当初学得更加努力）。

人教版新目标九年级英语Unit13知识点及练习

Unit 13 We are trying to save the earth.知识点及练习Section A知识点1. try v. 试图，努力，尝试用法：try to do sth. 尽力做某事try doing sth. 尝试做某事try one's best (to do sth.) = do one's best (to do sth.)尽某人最大的努力(做某事)短语：try on 试穿try out 试用，参加选拔have a try 尝试，试一下let me try 让我试一下2.the earth 地球，表示世界上独一无二的事物前面要加定冠词the。

短语：on the earth 在地球上on earth 究竟，到底3. pollution n.污染，污染物→pollute v. 污染→polluted adj.被污染的短语：air pollution 大气污染，空气污染noise pollution 噪音污染water pollution 水污染4. litter v. 扔垃圾n.垃圾= rubbish = trash短语：take out the rubbish 倒垃圾throw rubbish / litter 扔垃圾5. the bottom of……的底部the top of ……的顶部6. be full of = be filled with 充满……7. play a part 参与…；起作用play a part in “在…方面起作用；参与…”，后接名词、代词或动词-ing形式。

8.cut短语cut down 减少，把……砍倒cut in 插话cut off 切断；断绝cut up 切碎cut out 删除9. instead of 介词短语，后跟名词、代词或动词ing形式。

instead 副词，常位于句末。

位于句首时，其后有逗号。

10. It’s good for health and it doesn't cost anything! (P98)11.be good for 对……有益，反义词组be bad for。

Unit13知识点人教版英语九年级全册

九年级U n i t13知识点梳理及拓展一、词汇回顾1.乱扔,垃圾,废弃物____________2.底部,最下部_________________3.公众的,公共的______________4.民众,百姓__________________5.优点,有利条件______________6.花费,花费,价钱_____________7.木制的,木头的_____________ 8.塑料的,塑料,塑胶__________9.有关系,作用,影响___________ 10.方法,措施__________________ 11.残酷的,残忍的______________12.有害的_____________________ 13.链子,链条__________________ 14.工业,行业___________________ 15.可重复使用的______________ 16.承担得起（后果）买得起________ 17.回收利用,再利用_____________ 18.大门__________________________ 19.负责人，主席________________ 20.金属__________________________二、词汇变形1.wood(n.木头)→____________________(adj.木制的)2.harm ( n.伤害) →_________________ (adj.有害的) →_________________adj.无害的3.danger(n.危险) →endanger(v.使遭危险;危及) →___________________ (adj.濒危的) →___________________ (adj, 危险的)w(从法律)--lawyer(n.律师)5._____________(n.科学) →___________________ (adj.科学上的,科学的)→___________________ (n.科学家)e(v.使用) →______________ (v.再次使用) →_____________(adj可再次使用的)7.advantage( n.优点;有利条件) →___________________ (反义词) (n.缺点:不利条件)8.__________(v.运输) →__________________(n.运输业:交通运输)9.inspire(n.鼓舞;激励) →___________________ n.灵感;鼓舞人心的人(或事物)10.c reate(v.创造) →_________________ (adj.有创造力的) →________________ (n.创造力:独创性)→___________________ (n.创者)→___________________ (n.创造;作品)三、短语归纳1._________________/________________充满2.______________________把...扔入...里3.________________________过去常常4.________________________在...中发挥作用5.__________________砍倒6._______________________代替，而不是7._________________________有影响，起作用8.__________________导致，通向9._____________________听说10.______________________对...有害11.___________________________不但...而且12.______________到目前为止13._______________________在...顶端或顶部14.____________________________承担得起做15.________________________参加16.______________付费17._______________关掉18.__________________采取行动19._________________扔掉20.________________恢复，归还，使想起21.__________________清理，打扫干净22._______________________在...中发挥作用23._____________________在...底部24._______________________充分利用25.__________________伤害26.________________________...的数量27._________________________违法28.________________________遵守法律30._______________________交通法规31._________________发生32._______________当心，小心33.________________采取措施34.________________占据，开始从事35.________________________想出36._________________赠送,捐赠37.________________成立；建立；建起38.____________________试穿39.____________试验，尝试,参加…选拔四、知识详解1.try to do =try one’s best to do 尽力做某事-e.g. _____________________________________我们将努力在一周内完成这项工作。

人教版九年级英语第十三单元知识点总结

人教版九年级英语第十三单元知识点总结Unit 13: We're Trying to Save the Earth!I。

Vocabularylitter。

bottom。

fisherman。

coal。

ugly。

advantage。

cost。

wooden。

plastic。

takeaway。

bins。

shark fin。

cruel。

harmful。

be harmful to。

at the top of the food chain。

ecosystem。

industry。

law。

scientific。

take part in。

afford。

turn off。

reusable。

pay for。

take n。

n。

recycle。

napkin。

throw away。

put to good use。

pull down。

upside。

gate。

bottle。

president。

n。

ironwork。

metal。

bring back。

XXX.II。

Present Continuous XXXn: It is used to XXX:1.Affirmative sentence: Subject + am/is/are + V-ing2.Negative sentence: Subject + am/is/are + not + V-ing3.Interrogative sentence: Am/Is/Are + Subject + V-ingUsage:1) XXX.XXX: Look。

The big bird is XXX.2) XXX an n that is currently in progress but may not be XXX.XXX: Right now。

I am studying Chinese by distance learning.3) When used with adverbs such as always。

人教版九年级英语Unit13知识点总结

人教版九年级英语Unit13知识点总结九年级英语Unit 13 We’re trying to save the earth! 讲义一、词性转换Section A1. litter → (v.) litter2. wood → (adj.) wooden3. harm → (adj.) harmful4. science → (adj.) scientific5. reuse → (adj) reusable6. transport → (n.)transportationSection B7. inspire → (n.) inspiration8. create → (n.) creativity /(adj.) creative二、短语归纳1. play a part in在……中起作用；参与2. not only…but also…不但……而且……3. no longer 不再4. so far 到目前为止5. take action 采取行动6. cut down 砍倒；减少7. help out 帮……解决困难8. pay for 付费；付出代价9. turn off 关掉10. instead of 代替11. lead to 导致；通向12. be harmful to 对……有害13. at the top of 在……顶部14. clean up打扫干净15. add up 总计；加起来16. begin with 以……开始17. set up 建立18. be made from由……制成（看不出原材料）19. be made of由……制成（看得出原材料）20. take public transportation乘坐公共交通工具21. upside down 上下颠倒；倒转22. be known for 因……闻名23. win a prize 获奖24. be good at擅长于25. ride a bike 骑自行车26. get worse and worse越来越糟糕27. throw away 扔掉；抛弃28. pull down 拆下；拆毁29. put……to good use好好利用某物30. bring back恢复；使想起；归还1. What are your ideas for… 关于……你有什么看法？2. do A instead of doing B 做A而不做B3. doing sth. can help 做某事有用4. The number(s) of … have fallen by… ……的数量下降了……5. a + adj.最高级+ n. 一个最……的……6. sb. isn’t the only one who ……不是唯一一个……的人三、重点句子1. There are other advantages of bike riding.骑自行车还有其他的优点。

人教版九年级英语unit13知识点

人教版九年级英语unit13知识点Unit 13 - The 21st CenturyIntroductionIn the 21st century, the world has undergone significant changes in various aspects. This unit focuses on a range of knowledge points related to the 21st century, covering technological advancements, environmental concerns, and globalization. Let's delve into these topics and explore the impact they have on our lives.Technological AdvancementsOne of the prominent features of the 21st century is the rapid advancement of technology. Computers, smartphones, and the internet have revolutionized how we live, work, and communicate. With just a few taps on a screen, we can access a wealth of information and connect with people from different corners of the world. Moreover, the rise of artificial intelligence and automation promises even more convenience and efficiency in the future.However, as we embrace new technologies, we must also be aware of their potential drawbacks. The overuse of screens and gadgets can lead to addiction and isolation. It is important to strike a balance and use technology responsibly, ensurinindividual'security and privacy.Environmental ConcernsThe impact of human activities on the environment is a significant issue in the 21st century. Global warming, deforestation, and pollution pose serious threats to our planet and all its inhabitants. It is crucial for individuals, governments, and organizations to take action to protect the environment and mitigate the consequences of climate change.Each of us can play a role in preserving the environment. Adopting sustainable practices such as recycling, reducing energy consumption, and promoting renewable energy sources are essential steps towards a greener future. Education and awareness campaigns are also instrumental in encouraging communities to take collective action to protect our planet.GlobalizationGlobalization has been a defining feature of the 21st century. It refers to the increasing interconnectedness and interdependence of nations through trade, communication, and the exchange of ideas. The internet and social media platforms have made the world, indeed, a global village.While globalization has brought numerous benefits in terms of economic growth, cultural exchange, and technological advancements, it also poses challenges. Economic disparities between countries, lossof cultural identity, and the spread of diseases across borders are some of the concerns that need to be addressed.ConclusionThe 21st century has brought with it immense progress and challenges. Technological advancements continue to reshape our lives, requiring us to adapt and remain conscious of the potential implications. Environmental concerns remind us of our responsibility to protect our planet for future generations. Globalization has connected us more than ever before, emphasizing the importance of cooperation and understanding between nations.Let these knowledge points guide us as we navigate through the complexities of the 21st century. By embracing technology responsibly, protecting the environment, and fostering global collaboration, we can strive for a better future for ourselves and generations to come.。

人教版九年级英语第十三单元语法知识讲解

人教版九年级英语第十三单元语法知识讲解现在时态现在时态包括三种时态：一般现在时、现在进行时和现在完成时。

1.一般现在时(1)表示客观真理。

如：The earth revolves around the sun.地球绕着太阳转。

(2)表示长期存在的情况。

如：Helikes music very much.他很喜欢音乐。

(3)表示经常发生的动作或存在的状态。

如：He often visits his grandparents.他常看望他的爷爷奶奶。

【注意】(1)一般现在时也可以表示将来的动作，强调计划的不可改变性。

如：The train leaves at 3 p.m.this afternoon.这辆火车在今天下午三点出发。

(2)在时间和条件状语从句中，必须用一般现在时表示将来的动作。

如：If it rains tomorrow, we won't go out.如果明天下雨，我们就不出去。

2.现在进行时(1)表示现在正在进行的动作。

如：①It is raining heavily now.现在正在下大雨。

②My mother is cooking in the kitchen.我妈妈正在厨房做菜。

(2)表示近期打算的动作。

如：①I'm meeting my teacher tonight.今晚我要去见我的老师。

②He is leaving for Beijing next week.他下周要离开去北京。

(3)表示反复进行的动作(往往带有感情色彩)。

如：①You are always making the same mistake.你老是犯同样的错误。

②She is always getting ready to help others.她总是乐于助人。

【注意】有些动词不宜用进行时态，如：like, want, believe, know 等。

3.现在完成时(1)表示反复的动作对现在的影响。

人教版九年级英语Unit 13课本知识点集锦

九年级英语Unit 13 We’re trying to save the earth!课本知识点集锦P97☆the bottom of ……的底部☆be full of 充满……☆throw ... into ... 把……扔进……里☆put ... into ... 把……排放到……里☆write to 给……写信☆close down 关闭☆clean up 清理；打扫干净；整理好☆play a part (in ) 参与……；（在……中）起作用；扮演角色 = play a roleplay a part / role of扮演……的角色Linda played a part / role of Snow White in the play. 琳达在这部话剧中扮演了白雪公主的角色。

P98☆water pollution 水污染☆turn ... into... 把……变成……☆used to 过去常常☆cut down 减少；削减；砍倒；删节☆instead of 代替☆start doing sth. 开始做某事☆keep ... clean 保持……干净☆make a difference 起作用；有影响☆lead to 导致；通向（某地）P99☆hear of 听说☆a bowl of 一碗……☆cut off 切断；切除；中断☆throw into 扔进☆be harmful to 对……有害☆not only ... but also ... 不仅……而且……☆no longer 不再☆at the top of 在……顶端/部☆the food chain 食物链☆the number of ……的数量☆in the last ... years 在过去的……年里☆such as比如☆so far 到目前为止☆be good for 对……有好处☆be in danger 处于困境中P100☆used to 过去常常☆take part in 参加☆help with 帮助☆help out 帮助……摆脱困难☆afford to do sth. 承担得起做某事；有能力做某事☆begin with 从……开始☆turn off 关掉☆instead of 代替；而不是☆It’s a great idea that ... . ……是一个好主意。

人教版九年级上册第十三单元语法知识点梳理

人教版九年级上册第十三单元语法知识点梳理
Unit13：We,retryingtosavetheearth!
第十三单元的语法重点是：总结现在进行时，现在完成时、被动语态。

现在进行时：
表示现阶段或现在正在进行的动作。

常与now,thesedays等时间状语连用。

另外，句中有IOok,1isten等词暗示时，常用现在进行时。

现在进行时谓语构成：is∕am∕are+动词的现在分词。

现在完成时：
表示过去已经发生或完成的动作对现在造成的影响或结果；还可表示过去某一时间开始并一直持续到现在，也许还要持续下去的动作或状态。

常与a1ready,yet,before,sofar,inthe1astthreeyears,recent1y,“for+时间段”，“since+时间点”等连用。

现在完成时构成：have∕has+动词的过去分词。

【中考真题】：
1.-Dad,I_thestationforminutes,butnobodycametomeetme.
-Don,tworry.Γ11gotomeetyousoon.
A.arrivedat
B.havebeenat
C.wi11reach
被动语态：
当没有或没必要指出动作的执行者或需要强调动作的承受者时，一般用被动语态。

被动语态谓语构成：be+动词的过去分词。

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