祈使句课件ppt.ppt

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1、祈使句是英语的基本句型之一，表达说话人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、劝告等意有表示请求、命令、希望、禁止、劝告等意思。思。祈使句一般没有主语，实际上是省略了主语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。句末用感叹号或句号，用降调朗读。Grammar: The Imperatives(祈使句）祈使句）祈使句祈使句肯定式：肯定式：Come here, please. Be patient, please. Lets go by bus.否定式：否

2、定式：Dont touch it. Dont be lazy. Never play with fire! 答语：答语： Yes, I will. / No, I wont.反意问句：反意问句：will you/ shall we句式：句式： 祈使句祈使句or/and +主主+will (wont) /can (cant).祈使句的肯定式祈使句的肯定式祈使句的肯定句式有三种形式，即祈使句的肯定句式有三种形式，即1). Do型型( 以行为动词原形开头以行为动词原形开头) 例如例如: Sit down 坐下坐下! Stand up起立！起立！2). Be型型(以以be开头开头), 例如例如: Be

3、 quiet安静！安静！3). Let型（以型（以let开头）开头） 例如例如: Let me help you. 让我来帮助你让我来帮助你。祈使句的否定式祈使句的否定式祈使句的否定结构是以祈使句的否定结构是以“Dont动词动词原形原形”开头开头Dont go there, please 请别去那儿。请别去那儿。Dont be late 不要迟到。不要迟到。Dont let him in 不要让他进来。不要让他进来。Dont let the water run into the room. 不要让水流进屋里。不要让水流进屋里。注意：注意：Lets型祈使句，其否定式也可用型祈使句，其否定式也可用

4、Lets not 如：如：Lets not have rest 咱们别休息了。咱们别休息了。Lets not sit here! 我们不要坐在这儿！我们不要坐在这儿！祈使句的答语祈使句的答语Tom: Remember to turn off the light !John: I will. Tom: Dont forget your homework!John: I wont.Tom：Dont come to school late again!John: Sorry, I wont.祈使句的反意疑问句祈使句的反意疑问句反意问句反意问句 Open the door, will you?Lets

5、 go by bus, shall we?Let us leave at once, will you?一个重要句型一个重要句型祈使句，祈使句， and/then 主主can/will do祈使句，祈使句， or 主语主语 cannot/ wont doExamples:1) Think hard, and you will come up with an idea.2) Think hard, or you will have no way out. 转换转换 1) If you think hard, you will come up with an idea. 2) If you don

6、t think hard, you will have no way out.祈使句转换为间接引语祈使句转换为间接引语1）“Come here, Tom!” John said. John told Tom to go there.2) “ Dont pick flowers,” he said to us. He told us not to pick flowers.随堂练习随堂练习1. He told me _for school. A. dont be late B. dont late C. not to be late D. is not late 2. Please dont m

7、ake a noise! _.I will be as quiet as a mouse. A. Yes, I wont. B. No, I wont. C. No, I will. D. Yes, I will.3. Stop talking and _ to me. I have some news for you. A. listening B. listen C. to listen D. listened4. _ to the English program more often, and you will be able to get it. A. If you listen B.

8、 Listening C. when listen D. Listen5. _ English with you is a lot of fun! A. Learn B. Learning C. If I learn D. When learning6. Let us stay here for two days, _? A. will you B. shall we C. dont you D. arent we1. Tom did his homework _. He made lots of mistakes. (care)2. Tom fell off his bike and hur

9、t himself _ (严重地严重地)3. Mr. Li cooks well. He is a good _ (cook)4. What _ (别的）别的）would you like?5. The accident _ (happen) yesterday.6. We try our best to stop accidents from _ (发生）发生）at school.carelesslyseriouslycookelsehappenedhappeningFill in the blanks with the proper words7. Santa Claus has nine

10、 _ (驯鹿）驯鹿）to pull his sleigh. The _ (九九) is called Rudolph, a red-nosed reindeer.8.He didnt succeed until he tried the_ (十二十二)time. 9. People often hurt themselves by _(fall) off chairs.10. Be careful with _ (刀子）刀子）.11. Dont jump from too high a _ (高度高度).12. Please _ (关掉关掉) the light before you leav

11、e. reindeertwelfthfallingknivesheightturn offninth请根据括号内的要求请根据括号内的要求, 改写下列句子改写下列句子, 每空一词每空一词(含缩写含缩写)。1. Get up earlier, or you will miss the early bus. (改为同义句改为同义句)_ you_ get up earlier, you will miss the early bus.Ifdont2. Before he told me about the accident, I knew nothing about it. (同上同上) I_ kno

12、w_ about the accident_ he told me.3. While I was trying to sleep, there was a knock at the door. (同上同上) I was trying to sleep_ someone _ at the door.didntanythinguntilwhenknocked4. I havent decided when I shall leave.(改为简单句改为简单句) I havent decided_ _ leave.5. The job might match your skills. (改为否定句改为否定句) The job_ _ match your skills.might notwhen to