句型:祈使句知识点综合讲解及习题专练(附答案)
一. 祈使句:
1.定义:用来表达请求,命令,劝告,警告,禁止等的句子;以动词原形开头,否定形式在句首加don’t;隐含主语为you;
e.g. Go and wash your hands.
Watch your steps.
Be kind to your sister.
2. 结构:
(1)Do型:
肯定结构;动词原型+其它成分
否定结构:Don’t+肯定结构
e.g. Eatin the classroom.
Don’t eat in the classroom.
(2)Be型:
肯定结构:Be +表语+其它成分
否定结构:Don’t+肯定结构
e.g. Be a good student!
Don’t be late for school!
(3) Let型:
肯定结构:Let+宾语+动词原形+其它成分
否定结构:Don’t+肯定结构
Let+宾语+not+动词原形+其它成分
e.g. Let him go.
Don’t let him go.
Let him not go.
3.祈使句的回答:祈使句通常用将来时来回答,如Ok, I will或者Sorry, I won’t.
e.g. Don’t speak loudly.
Sorry, I won’t.
Open your book, please.
Ok, I will.
4.句型:祈使句,and/or +句子(将来时)
(1) and表示递进,“这样做的话,就会怎么样”,结构为“祈使句,and+句子(用将来时)”。
e.g. Work hard, and you will get good grades.
Stay here, and you will know the truth.
(2) or表示否则,“这样做的话,否则会或不会怎么样”,结构为“祈使句,or+句子(用将来时)。
e.g. Work hard, or you won’t get good grades.
Take the umbrella, or you will get wet.
5.祈使句的反义疑问句:
(1)Let’s(包括说话者) 和let us(不包括说话者)句型中的反义疑问句;含有let’s的反义疑问句,需用shall we;含有let us的反义疑问句需用will you;
e.g.Let’s go to school together, shall we?
Let us do our homework, will you?
(2)以动词原形开头的反义疑问句的写法:若前半句为肯定,通常用will you;若为否定,则用won’t you.
e.g. Don’t speak loudly, will you?
Stay at home tonight, won’t you?
二.习题专练及参考答案:
(一)习题专练:
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作者:dingding
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