Unit3 Grammar 讲义2022-2023学年牛津译林版九年级英语下册.docx

1、9BUnit3 Grammar-简单句和复合句之间的转换（一）英语中按句子的结构可分三种：简单句 (simple sentence)；并列句 (compound sentence)和复合句 (complex sentence)。简单句：只有一个主语（或并列主语）和一个谓语（或并列谓语）。e.g. He often reads English in the morning. Tom and Mike are American boys. She likes drawing and often draws pictures for the wall newspapers.并列句：由并列连词（and

2、, but, or等）或分号（;）把两个或两个以上的简单句连在一起构成。e.g. You help him and he helps you. The future is bright; the road is tortuous. 前途是光明的，道路是曲折的。复合句：主句+从句（含有一个或一个以上从句）。主句是一个完整的句子(independent sentence),它可以独立存在。从句是一个不完整的句子,它必须和一个主句连用，不能独立存在。复合句包含：名词性从句（主语从句、宾语从句、表语从句和同位语从句）、定语从句和状语从句等。宾语从句可以用“宾语宾语补足语”、“疑问词动词不定式”的形式转

3、换成简单句。而目的、结果状语从句可转换成“动词不定式”的用法。如：I saw that he was reading the book carefully. 我看到他在仔细读书。I saw him reading the book carefully.I know how I should drive a car.我知道如何开车。I know how to drive a car.He got up early so that he would not miss the train.为了不错过这班火车，他很早就起床了。He got up early in order not to miss t

4、he train.下面我们看看简单句和复合句之间的转换。1、用“宾语+ 宾语补足语”将宾语从句转化成简单句。如：I found that he was very happy.I found him very happy.I noticed that he was entering the room.I noticed him entering the room.与notice和find有相同用法的动词还有 hear, see , think , watch等。2、用“疑问词+ 动词不定式”将宾语从句转换成简单句。I dont know how I can get to the robot sh

5、op.=I dont know how to get to the robot shop.You dont know whom you can talk to .=You dont know whom to talk to .注意： 1.）宾语从句中从句的主语和主句的主语是同一人时，才可以转换，且主语的谓语动词通常是know, remember, forget, learn等。2.）疑问词Why不能和动词不定式连用。3、用“ 动词不定式”将结果状语从句或目的状语从句转换成简单句。如：He is so young that he cant go to school.=He is too youn

6、g to go to school.=He is not old enough to go to school.She is so clever that she can work out this difficult maths question.She is clever enough to work out this difficult maths question.He exercises every day so that he can keep fit.为了保持健康，他每天锻炼身体。He exercises every day in order to keep fit.注意：1.）

7、用“动词不定式”将结果状语从句或目的状语从句转换成简单句的前提是从句的主语和主句的主语一致。2.）结果状语从句sothat的结构可以用tooto或（not）enough to.来转换；目的状语从句可以用in order to 来转换。巩固练习：1.The robot was so careful that it reminded me of this. =The robot was careful enough_.(to remind me of this)2.He is always so busy that he doesnt have any time for hobbies.=He i

8、s always _busy_ for hobbies. (too; to have any time) 3.I have to buy a robot so that I can have more free time=I have to buy a robot_.(in order to have more free time) 4.Mr Jiang did not know what he should do with it.=Mr Jiang did not know _. (what to do with it)5.I am not sure how I should behave

9、at the dinner table. 我不确定该如何在餐桌旁表现。=I am not sure _at the dinner table. (how to behave)6.Amy doesnt know when she can hand in her homework.=Amy doesnt know_. (when to hand in her homework)()7. The girl was _ afraid _ she walked faster and faster. Aenough; to Btoo; to Cso; that Dsuch; that()8._stop m

10、ore accidents , we should slow down the driving speed. A.In order that B. In order to C. Thanks for D. Thanks to()9.“Im a singer ”is_an interesting TV show_many people like watching it. A. so, that B. such, that C. so, as D. such, as10. -Have you decided _(去哪儿)？-I dont know where _ (find) the person who used to help me. (where to go; to find)