3、祈使句

表示请求或命令别人做某事或不做某事。

1)用于第二人称，通常省略you。

①肯定祈使句：Open the door, please.

②否定祈使句：Don’t be late again.

2)用于第一人称和第三人称，通常以let(let后跟宾格)或shall开头。

Let me have a look. Let’s play a game now. Let him go home now.

Shall we meet at one thirty in front of the Garden Theatre?

4、感叹句

表达喜怒哀乐等强烈感情，句尾常用感叹号(!)，语气用降调。

1)what + 名词或名词性短语

What a big garden (it is)!

What an interesting storybook (it is) !

What lovely weather (it is)!

What pretty girls (they are)!

2)how +形容词或副词+主语+动词

How nice!

How beautiful the flowers are!

How tall Yao Ming is!

5、there be 句型 表示在某地有某人或某物。

1)主语是单数，be动词用is(was);主语是复数，be动词用are(were)。

There is some milk in the fridge.

There are some peaches in the basket.

2)如果有几个不同的人或物并列存在，be动词根据最靠近的那个名词而定。

There is a ruler and five knives in the pencil case.

There are five knives and a ruler in the pencil case.

3)there be句型和have/has区别：

there be句型表示某地有某人或某物;

have/has表示某人有某物。has用于第三人称单数，其余人称和数用have。

There are some English books on the desk.

I have some English books.

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