祈使句课件.ppt

文档介绍：祈使句是英语的基本句型之一,表达说话人对对方的叮嘱、劝告、请求或命令等,往往有表示请求、命令、希望、禁止、劝告等意思。
祈使句一般没有主语,实际上是省略了主语“You”。句末用感叹号或句号,用降调朗读。
Grammar: The Imperatives(祈使句)
祈使句
e here, please.
Be patient, please.
Let’s go by bus.
否定式:Don’t touch it.
Don’t be lazy.
Never play with fire!
答语: Yes, I will. / No, I won’t.
反意问句:will you/ shall we
句式: 祈使句or/and +主+will (won’t) /can (can’t)...
祈使句的肯定式
祈使句的肯定句式有三种形式,即
1). Do型( 以行为动词原形开头)
例如: Sit down 坐下! Stand up起立!
2). Be型(以be开头),
例如: Be quiet安静!
3). Let型(以let开头)
例如: Let me help you. 让我来帮助你。
祈使句的否定式
祈使句的否定结构是以“Don't+动词原形”开头
Don't go there, please. 请别去那儿。
Don't be late. 不要迟到。
Don't let him in. 不要让他进来。
Don't let the water run into the room. 不要让水流进屋里。
注意:
Let's型祈使句,其否定式也可用
Let’s not …
如:
Let's not have rest. 咱们别休息了。
Let's not sit here! 我们不要坐在这儿!
祈使句的答语
Tom: Remember to turn off the light !
John: I will.
Tom: Don’t forget your homework!
John: I won’t.
Tom:Don’e to school late again!
John: Sorry, I won’t.
祈使句的反意疑问句
反意问句
Open the door, will you?
Let’s go by bus, shall we?
Let us leave at once, will you?
一个重要句型
祈使句, and/then 主can/will do…
祈使句, or 主语 cannot/ won’t do…
Examples:
1) Think hard, and you e up with an idea.
2) Think hard, or you will have no way out.
转换 1) If you think hard, you e up
with an idea.
2) If you don’t think hard, you will
have no way out.
祈使句转换为间接引语
1)“Come here, Tom!” John said.
John told Tom to go there.
2) “ Don’t pick flowers,” he said to us.
He told us not to pick flowers.
随堂练****br/>1. He told me _____for school.
A. don’t be late B. don’t late
C. not to be late D. is not late
2. —Please don’t make a noise!
— will be as quiet as a mouse.
A. Yes, I won’t. B. No, I won’t.
C. No, I will. D. Yes, I will.