祈使句

表示请求、命令、建议、邀请等，谓语动词一律用原型，句子中通常不用主语，句末用惊叹好或者句号，用降调。

★肯定句：动词原型

Come here, please.

Go downstairs, please.

Stand up.

Sit down.

Be quiet.

Be careful.

祈使句中如果有唤语，一定要用逗号隔开，放在句首或者句尾：

Come in, Amy.

Sit down here, Tom.

Mary, give me a book please.

★否定：Don't+动词原型

Don't come here.

Don't sit down.

Don't stand up.

Don't give me it.

let sb. do 让某人做

Let me pass.

Let us have a rest.

Let's have a rest.

反意疑问：

Let's have a walk along the river, shall we?

Let us go out for a drink, will you?

倒装句：

so/neither的倒装

eg: He can swim. So can I.

She didn't go to class. Neither did I.

结构：

so/neither+be+ 主语

so/neither+助动词+ 主语

so/neither+情态动词+ 主语

助动词：

一般现在时: do, does/am, is, are

现在进行时: am, is, are

一般过去时: did

现在完成时: have, has

一般将来时: will, shall

过去进行时: was, were

过去完成时: had

过去将来时: would

感叹句：

1) What +名词+主语+谓语

What a beautiful girl she is!

What tall buildings they are!

2) How +形容词+主语+谓语

How beautiful the girl is!

How tall the buildings are!

? 在口语中，感叹句的主语和谓语常常省略：

What a nice present!(省略it is)