新人教版英语八年级下册unit8重点讲解及练习题(共3页).doc
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1、精选优质文档-倾情为你奉上语法聚焦:现在完成时 (Present Perfect Tense)1) 现在完成时的定义:(1)表示过去发生或已经完成的动作对现在造成的影响或结果。Its so dark. 太黑了。Someone has turned off the light. 有人把灯关上了。(2)表示从过去某一时间开始并一直持续到现在的动作或状态。常与since+过去的时间点,for+一段时间,so far等时间状语连用。I have lived here for ten years.我已经住在这里10年了。(从10年前开始,持续到现在还住这儿)I have lived here since
2、 2003. 自从2003年我就住在这儿。(从2003年开始,持续到现在还住这儿)2) 现在完成时的构成及句式转换:助动词 have/has + 过去分词I have finished my homework. (肯定句)I have not finished my homework. (否定句)Have you finished your homework?Yes, I have. / No, I havent, (一般疑问句及肯定、否定回答)现在完成时的标志:常与just, already, yet, ever, never, before, so far 等连用,强调动作的完成,不强调动
3、作的持续。Have you ever been to Japan?I have just finished my homework.for + 时间段;since + 过去的时间点;since + 段时间 ago;since + 一般过去时的句子。They have known each other for five years.Since he was a child, he has lived in England.do _ _ go_ _read _ _ see _ _know_ _ eat _ _ forget _ _write_-_一、根据句意或汉语提示写词。1. We often
4、see people take out _ and shoot others in action movies.2. Li Ming went to Paris three years ago, now he can speak _ very well.3. I think dictionaries and Internet are good _(工具) for us to study English.4. Look, Tim is walking t_ the library. He wants to borrow some books.5. Would you like something
5、 e_ to eat? No, thanks. Im full.【课后巩固】一、用括号内所给单词适当形式填空 (每题4分,共20分)1. Judy has already _ (finish) reading Little Women.2. Tom and Mike have already _ (decide) to learn Chinese on Internet.3. Have you _ (read) Alice in Wonderland yet?4. Robinson _ (have) already built a house on the island.5. It often
6、 _ (snow) in North China in winter.yet / already already 通常用于肯定句中,意为“已经”,位于行为动词之前,be动词、助动词之后。例如: We have already cleaned the classroom. 我们已经打扫了教室。yet用于疑问句中表示“已经”;用于否定句中表示“还(没)”。例如: Has he found his watch yet?No, not yet. 单项选择: Have you done most of your jobs? Not _. I will do them in a minute. A.nei
7、ther B.never C.already D.yet Steve, have you decided yet which book to write about for English class? 斯蒂夫,你已经决定英语课写哪本书了吗?which book to write about 意为“写哪一本书”,此处为“疑问词+动词不定式”结构,在句中作宾语。I cant decide when to start. 我不能决定何时动身。I am thinking about how to deal with the problem. 我正在考虑怎样处理这个问题。拓展 常用于此结构的疑问词还包括
8、疑问代词who, whom, what 及疑问副词when, where 和 how。He taught me how to pronounce it. 他教我如何发音。I didnt decide where to live. 我没有决定住哪儿。(2012 呼和浩特)Which dress do you like best, Madam?Sorry, I cant decide _ now.A. to buy which one B. buy which oneC. which one to buy D. which I should buy itIt was really good, so
9、 I couldnt put it down. put down 意为“记下;放下”,为“动词+副词”型短语,宾语若为代词,应放在put 与 down 中间。 (2012河北)_ your name on the paper and you can get a magazine.A. Cut down B. Look down C. Turn down D. Put downone the other, some the others 的辨析1. one the other 为固定搭配,用于两者之间,意为“一个另一个”。例如: He has two sons. One is a doctor,
10、 the other is a student.他有两个儿子。一个是医生,另一个是学生。2. some the others用于三者或三者以上,意为“一些其余的”。例如: Boys are on the playground. Some are playing basketball, the others are playing football. 男孩们都在操场上,一些正打篮球,其余的正在踢足球。(2012山东济宁)Lily and her sister look the same. I cant tell one from _.A. other B. another C. the othe
11、r D. others词义辨析: success 、succeed、 successful和 successfully的辨析success:名词,意为“成功”succeed:不及物动词,后常接in doing sth.。succeed in sth. “在某事上取得成功”; succeed in doing sth. “成功做某事”。successful: 形容词,意为“成功的”。successfully: 副词,意为“成功地”。 选词填空:succeeded, successful, successfully1. She _ in passing the exam. 她成功的通过了考试。2.
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