[八年級(jí)英語(yǔ)]河南省鄭州市第九十六中七年級(jí)英語(yǔ) Unit 12 Don’t eat in class Section A 2課件

1、單擊此處編輯母版標(biāo)題樣式單擊此處編輯母版文本樣式第二級(jí)第三級(jí)第四級(jí)第五級(jí)* Unit 12Dont eat in class. Grammar肯定祈使句Sit down.Come in.Eat at home.否認(rèn)祈使句Dont sit down. Dont come in. Dont eat at home.祈使句是一般以動(dòng)詞原形開(kāi)頭，向聽(tīng)話(huà)者發(fā)出請(qǐng)求、命令，提出要求或建議等的句子。這類(lèi)句子的主語(yǔ)常是第二人稱(chēng)you,也就是聽(tīng)話(huà)者,因而you常省去了。Listen to music outside. Dont listen to music outside.Do your homework a

2、t school. Dont do your homework at school. Comehereontime! 準(zhǔn)時(shí)來(lái)到這里！ Dontlookoutofthewindow. 不要向窗外看。 Be quiet!祈使句的肯定形式: 動(dòng)詞原形+其他祈使句的否認(rèn)形式：Dont+動(dòng)詞原形+其他為表禮貌，常在句前或句末加please, 句末時(shí)please前加逗號(hào)。拓展2. Let sb +動(dòng)原+其他. let sb not +動(dòng)原+其他 Dont let sb +動(dòng)原+其他 3. 以no開(kāi)頭的，表禁止，常用語(yǔ)公共場(chǎng)所 No smoking! No fishing! classroomuniform

3、3a Fill in the blanks with the correct words.uniformclassroomsports shoessports shoeshave to與一般情態(tài)動(dòng)詞的異同相同點(diǎn)：不能單獨(dú)作謂語(yǔ)，后面必須接動(dòng)詞原形一起構(gòu)成謂語(yǔ)。Explanation不同點(diǎn)： 1、一般的情態(tài)動(dòng)詞沒(méi)有人稱(chēng)和數(shù)的變化，而have to 有人稱(chēng)和數(shù)的變化?？捎糜诙喾N時(shí)態(tài)中： 一般現(xiàn)在時(shí)中當(dāng)主語(yǔ)是第三人稱(chēng)單數(shù)時(shí)要 用has to，其余的人稱(chēng)用have to，一般過(guò) 去時(shí)中要用had to。如： She has to go to school by bus. 她不得不乘公汽上學(xué)。 We h

4、ave to go to school by bus. They had to go to school by bus at that time.Explanation2、否認(rèn)句和疑問(wèn)句的構(gòu)成方式不同： 一般的情態(tài)動(dòng)詞直接在后面加not構(gòu)成否認(rèn)句， 把這些情態(tài)動(dòng)詞提到句首就構(gòu)成一般疑問(wèn)句。 而have to 的否認(rèn)句和疑問(wèn)句的構(gòu)成往往要借助 于助動(dòng)詞do的適當(dāng)形式，即have to, has to, had to的否認(rèn)式分別為dont have to, doesnt have to, didnt have to，疑問(wèn)句是在句首加助動(dòng)詞do/does/did,句中復(fù)原成have to。 如: W

5、hat does she have to do? 她必須做什么？ You didnt have to wait for me yesterday. 昨天你沒(méi)有必要等我。 must表說(shuō)話(huà)人主觀看法，無(wú)人稱(chēng)和時(shí)態(tài)變化 Its 8 oclock. I must go home. I neednt go home. 不需要must not= mustnt 禁止，不允許Explanation3.hear, listen和sound都有“聽(tīng)的意思, 但三者是有區(qū)別的。hear “聽(tīng)說(shuō), 側(cè)重于“聽(tīng)的內(nèi)容。Imsorrytohearthatyouareill. 聽(tīng)說(shuō)你生病了, 我很難過(guò)。Listentome

6、carefully. 認(rèn)真聽(tīng)我說(shuō)。Thechildrenliketolistentomusic.孩子們喜歡聽(tīng)音樂(lè)。Ineverheardsuchaninterestingstory. 我從來(lái)沒(méi)聽(tīng)過(guò)這么有趣的一個(gè)故事。(2) listen“聽(tīng)側(cè)重于“聽(tīng)這一動(dòng)作。(3) sound“聽(tīng)起來(lái),它是系動(dòng)詞, 后面接形容詞等。 Thatsoundsgreat. 那聽(tīng)起來(lái)真不錯(cuò)。 Itsoundslikefun. 聽(tīng)起來(lái)挺有趣。4.arrivelatefor與belatefor意思相近, “遲到 Dontarrive/be lateforschool. 上學(xué)別遲到。 Iarrived/was late f

7、or the meeting yesterday. 我昨天開(kāi)會(huì)遲到了。5.Notalking!“禁止交談！ no后面加上名詞或動(dòng)名詞(doing) 也表示不要做某事, 與dont+do的用法相似。Nowetumbrellas!Dontputwetumbrellasher.禁止放濕雨傘！Nofood!/Donteatfoodhere!禁止吃食物！Nosmoking!/Dontsmokehere!禁止吸煙！6. What else do you have to do?else “其它的, 用來(lái)修飾something, anything , nothing等, 還可修飾疑問(wèn)詞 what, where

8、, who等, else修飾疑問(wèn)詞或不定代詞時(shí), 應(yīng)后置。例如:Do you have anything else to do .Who else did you see?Where are the other girls? (放在修飾的名詞前) late, dont, for school, arrive2. music, listen to, in the classroom, dont3. eat, cant, in the classroom, we Dont arrive late for school. Dont listen to music in the classroom. We cant eat in the classroom.ExersicesForm sentencesB: Put the following i