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1、人教版I八年级下册英语4单元重点 句型解析（附练习题及答案）重点句型解析1. Why don t you talk to your parents ?“Why don t you + 动词原形+其他？”相当于“ Why not + 动词原形+其他？”意为“为什么不？ ”并不表示疑问，而是作建议、询问。例如：Why don t you go with us? = Why not go with us?为什么不同我们一起去呢？Why don t you go swimming? = Why not go swimming?为什么不去游泳呢？【拓展】why not用在口语中表示赞同，意为“当然，好啊
2、”。例如： Let s go to the movies.我们看电影吧。Why not?好啊！2. I m really tired because I studied until midnight last night.until意为“直到”，有下列用法：(1)作介词，后接时间名词，在句中作时间状语。例如:She waited there until 9 o clock.她一直等到 9 点钟。(2)作连词，后接从句，引导时间状语从句。例如：We waited until the rain stopped. 我们等到雨停了。【拓展】(1) until用在肯定句中，多与持续性的动词连用。如 st
3、and/wait/stay 等，表示主句动作的终止时间。例如：I will wait here until you come back.我会在这里等到你回来。(2) until可用于否定句中，即not until意为直到才”，常与非延续性动词连用。如open/start/leave/arrive 等，强调主句动作开始的时间。 例如：The child didn t go to bed until his father came back.直到父亲回来，那个孩子才睡觉。3. I m not good at writing.be good at意为“擅长”，后接名词、代词或动词-ing形式。例如：
4、I m good at playing chess.我擅长下象棋。We should be good at learning from each other.我们应该善于互相学习。【拓展】(1) be good for 意为“对有好处”。例如：Eating more vegetables is good for your health.多吃蔬菜对你的健康有好处。(2) be good /kind /nice to 意为“对好”。例如：My friend was good to me when I was ill.我生病时我的朋友对我关怀备至。4. Although she s wrong, i
5、t s not a big deal.although作连词，相当于though ,意为“尽管，虽然”，用来引导让步状语 从句。它所引导的从句不能与并列连词but; and; so等连用，但可以和yet; still等词连用。例如：Although he lives alone, he doesn t feel lonely.=He lives alone, but he doesn t feel lonely.虽然他一个人住，但他并不感到孤独。There is air all around us, although we cannot see it.虽然我们看不见空气，但空气却存在于我们的周
6、围。【拓展】although 与 though 的辨析：(1)用作连词，表示“虽然”，二者可以互换使用，但although比though更为正式。例如：Though/Although it was raining, we still went there.虽然下着雨，但我们还是去了那里。(2) although 一般不用作副词，而though可用作副词，且一般放在旬末(不 放在句首)，意为“可是，不过”。例如：It s hard work; I enjoy it, though.工作很辛苦，可是我很喜欢。We all tried our best. We lost the game, thou
7、gh.我们都尽力最大努力，但我们还是输了。(3)在as though (好像，仿佛)，even though (即使，纵然)等固定短语中不能用although 。例如：He talks as though he knew everything.他夸夸其谈，好像无所不知。5. I hope things will be better for you soon.hope作动词，意为“希望”，用于表示有可能实现的愿望，其后可接不定式或宾语从句，但表达“希望别人做某事”时则需用hope that从句。例如：I hope to watch the football match again.我希望再看一次
8、那场足球赛。I hope you can pass the exam.我希望你能通过考试。【拓展】hope与wish的辨析：(1)表示“想；希望”，两者宾语可为 to do ,不能用doing 。例如：I hope/wish to visitGuilin.我希望去桂林观光。(2) wish后可以跟复合宾语，即 wish sb. to do sth.,而hope不能。例如:I wish you to go.( 正)我希望你去。I hope you to go.( 误)我希望你去。(3)两者都可接that从句，但是“hope + that 从句”表示希望，“wish + that从句”表示愿望，且
9、从句的谓语动词要用虚拟语气。例如：但愿我真的富有I hope you ll be better soon.我希望你很快好起来。I wish I were really wealthy.（4） wish后可接双宾语。hope没有这种用法。例如：We wish you a happy New Year!我们祝你新年快乐！练一练：I.句型转换，按要求完成下列句子。1. Why don t you get her a scarf?（改为同义句）get her a scarf?getting her a scarf?2. You should get a CD for your friend.（对划线部
10、分提问）I for my friend?3. We don t go shopping. We watch TV at home instead.（改为同义句）We watch TV at home shopping.4. I think your idea is great.（ 改为否定句）I your idea is great.5. She does well in singing and dancing.（ 改为同义句）She is singing and dancing.6. She had a map in order not to get lost.（ 改为同义句）She had
11、 a map she wouldn t get lost.7. The old man lives a simple life although he is rich.（ 改为同义句）The old man is rich,he lives a simple life.II.根据汉语提示，完成句子。1 .我有太多家庭作业，所以我没有任何空闲时间做我喜欢的事情。I have too much homework I don t have any free time to dothings.2 .我真的很累，因为我昨天晚上一直学到半夜。I m really tired I studied midni
12、ght last night.3 .你今天晚上为什么不早点睡觉？go to sleep earlier this evening?4 .你应该给他打电话，为的是你可以道歉You call him you can say you re sorry.5 .尽管她错了，但那没什么大不了的。she s wrong, it s not a big deal.6 .我觉得这不公平。I this is fair.7 .我希望你能解决这个问题。I hope you can the problem.8 .昨天我哥哥和Tony打了 一架。Yesterday my brother with Tony.9 .我妈妈正
13、在浏览报纸。My mother is the newspaper at the moment.10 .我弟弟拒绝和我一起玩，我很生气。My brother with me, and I was angry.III .语法专练：选择括号内适当的词填空。1. Many people do not realize the importance of health(after; when; until) they have fallen.2. They develop their skills(because; since; so that) they can do things better and
14、 better.3. Look! Some people are running the red lights. We should wait(although; because; if) others are breaking the rule.4. We didn t start our discussion(while; until; if) everybody arrived.5. She speaks loudly(because; so that; if) all the people can hear her clearly.IV .从方框中选择适当的句子完成对话。A. Some
15、 flowers?B. Would she like a scarf?C. How about her favorite book?D. Erdon t you think that s too cheap?E. A scarf is too personal.A: Lily, what should I get for Ms. Ning for the coming Teachers Day?B: Your English teacher? How about a notebook?A: 1B: How about a watch?A: I don t think so. A watch i
16、s too expensive.B: I see. 2A: No, I don t know what book she likes best.B: Well, 3A: No! 4B: OK, I know. How about flowers?A: 5 Yes, she ll like that!【参考答案】I.句型转换，按要求完成下列句子。1. Why not How / What about2. What should; get3. instead of going4. don t think5. good at6. so that7. butII.根据汉语提示，完成句子。1. so; I like2. because; until3. Why don t you4. should; so that5. Although/Though6. don t think7. work out8. had a fight9. looking through10. refused to playIII .语法专练：选择括号内适当的词填空。1. until 2. so that 3. although 4. until 5. so thatIV .从方框中选择适当的句子完成对话。1-5 DCBEA