初中英語(yǔ)祈使句講解

1、精選優(yōu)質(zhì)文檔-傾情為你奉上祈使句（一） 概念：用來(lái)表示請(qǐng)求、命令、叮囑、邀請(qǐng)、勸告的句子是祈使句。（二） 一般祈使句（省略第二人稱主語(yǔ)you）1. 肯定句：動(dòng)詞原形+ Be brave.Stand up.Stop talking!Come on and join us!a. 有時(shí)，為了加強(qiáng)語(yǔ)氣，可以在動(dòng)詞之前加do.Do study hard.Do sit down.b. 為了使語(yǔ)氣顯得客氣，可在祈使句的句首或句尾加上please. Please在句尾時(shí)，之前一定要加一個(gè)逗號(hào)。Please come here.Go this way, please.c. 祈使句有喚語(yǔ)，一定要用逗號(hào)隔開(kāi)，放在句

2、首或句尾。Li Ming, come here.Here you are, Eric.2. 否定句：Dont + 動(dòng)詞原形 + Dont swim in the river.Dont be late.Please dont be noisy.Dont tell her, please.（三） Let祈使句（含有第一、三人稱主語(yǔ)）1. 肯定句：Let sb. do sth.Lets go swimming on Sunday.Let me try again.Let Tom go there himself.Let the news be known.Let each man decide fo

3、r himself.2. 否定句：Let sb. not do sth. 或Dont let sb. do sth.Dont let her waste time.Dont let him hear you say that.Let her not do it alone.Lets not say anything about it.Dont let them play with fire.3. 注意：Lets表示包括對(duì)方。Let us表示不包括對(duì)方。Lets go, shall we? （包括對(duì)方）Let us go, will you? （請(qǐng)求對(duì)方許，不包括對(duì)方）（四） 句型轉(zhuǎn)換：祈使句+

4、and/or+陳述句祈使句相當(dāng)于if引導(dǎo)的條件狀語(yǔ)從句。Use your head, and you will find a way.= If you use your head, you will find a way.Work hard, or you will fail.=If you dont work hard, you will fail.練習(xí)：Come early, and you will catch the first bus.= Come early , or you will miss the first bus.= 連詞：1、and, then, and then 就，

5、那么2、or, or else, otherwise 否則，要不然比較：1、Come early and you will catch the first bus. 早點(diǎn)來(lái)，你就能趕上第一班車。2、Come early , or you will miss the first bus. 早點(diǎn)來(lái)，不然趕不上第一班車了。3、Use your head, then you will find a way. 開(kāi)動(dòng)腦筋，那么你就能找到辦法。4、Use your head , or esle, you won't find a way. 開(kāi)動(dòng)腦筋，否則你就找不到辦法。5、Work hard, and then you won