七年級(jí)英語(yǔ)下冊(cè)Unit4Don'teatinclass第三課時(shí)SectionAGrammarFocus_3c作業(yè)課件新版人教新目標(biāo)版

1、第三課時(shí)第三課時(shí)section a(grammar focus3c)祈使句1祈使句概念用于表達(dá)命令、請(qǐng)求、勸告、警告、禁止等的句子叫作祈使句。祈使句最常用于表達(dá)命令，因其對(duì)象(即主語(yǔ))是第二人稱(chēng)，所以通常都省略。以let開(kāi)頭的句子也是祈使句的一種，常用于第一、三人稱(chēng)，表示建議、邀請(qǐng)、勸說(shuō)等。祈使句的動(dòng)詞都用一般現(xiàn)在時(shí)，句末用句號(hào)表示結(jié)束。go and wash your hands.去洗洗你的手。(命令)be quiet，please.請(qǐng)安靜。(請(qǐng)求)let me try.讓我試試。(建議)2祈使句的基本結(jié)構(gòu)類(lèi)型句型結(jié)構(gòu)示例do型肯定：動(dòng)詞原形(賓語(yǔ))其他成分stand up.起立。否定：do

2、nt動(dòng)詞原形(賓語(yǔ))其他成分dont play with water.不要玩水。be型,肯定：be表語(yǔ)(名詞或形容詞)其他成分,be calm.冷靜。類(lèi)型句型結(jié)構(gòu)示例be型否定：dontbe表語(yǔ)(名詞或形容詞)其他成分dont be stupid.別犯傻。let型肯定：let賓語(yǔ)動(dòng)詞原形其他成分lets go swimming.咱們?nèi)ビ斡景伞７穸ǎ篸ont let賓語(yǔ)動(dòng)詞原形其他成分let賓語(yǔ)not動(dòng)詞原形其他成分dont let him go.別讓他走。let him not go.別讓他走。have to的句型結(jié)構(gòu)肯定句：we have to be quiet in the library

3、.在圖書(shū)館，我們必須安靜。否定句：we dont have to wear the uniform today.今天，我們沒(méi)必要穿校服。特殊疑問(wèn)句：what do you have to do?你必須做什么？一般疑問(wèn)句：do we have to eat in the dining hall?我們必須在餐廳吃飯嗎？一、用括號(hào)內(nèi)所給單詞的適當(dāng)形式填空。1you cant _(wear)a hat in class.2 _ (not run)in the hallways.3my sister _ (have)to get up early in the morning.4_ (do)your h

4、omework first.5lets_ (play)soccer after school.weardont run has do play二、單項(xiàng)選擇。6its late，teresa._ _ earlier next time and youll have enough time to have breakfast.ok，mom.ill remember.aget up bgetting upcto get up dgets up7_ _ this rock music，please.im afraid some people cant stand the noise!astopping

5、 bstopcstops dstoppedab8_ _ call me wang wang！its my dogs name.anot bno cdont ddoesnt9tom，_ _ afraid of speaking in front of people. you are the best one.adont bnot cnot be ddont be10jim，_ _ read books while you are walking in the street. its very dangerous.ok，thank you.adont bdoesnt cwont dcantcda三、將下列祈使句改為否定式。11come here early.dont come here early.12ask him.dont ask him.13please wait for her.please dont wait for her.14read the book caref