1、Unit 4Dont eat in class.Section A(Grammar Focus-3c),.选句子配图 Dont talk.Dont listen to music.Dont eat.Dont take photos.,答案:1.Dont eat.2.Dont talk.3.Dont take photos.4.Dont listen to music.,.句型展示1.她必须在图书室里保持安静吗?是的。she quiet in the library?Yes,she.答案:Does;have to be;does,2.我们能在走廊里听音乐吗?不,不能。we music in th
2、e hallways?No,you.3.我们不必天天来上学。We come to school every day.答案:2.Can;listen to;cant 3.dont have to,Does he have to wear a uniform at school?在学校里他必须穿着校服吗?,【自主领悟】(1)have to为情态动词,意为“必须,不得不”,后接动词原形,有人称、时态和数的变化。其第三人称单数形式为has to,过去式为had to。例如:Its too late.I have to go home.太晚了。我必须回家了。(2)have to的否定形式和疑问形式要借助
3、于do/does/did等助动词来表示。例如:You dont have to clean the room now.你现在没必要打扫房间。,【用法辨析】have to与must的区别,【图解助记】,【活学活用】他今天得去看望他爷爷。He visit his grandfather today.今天你不必穿校服。You wear your school uniform today.你必须买票进电影院。You a ticket to go into the cinema.答案:has todont have tomust buy,.单项选择1.Can we wear hats in class?
4、.A.Yes,we doB.No,we dontC.Yes,we can D.Yes,we cant2.Can I use your ruler?Yes,you.A.mayB.needC.canD.must,3.do you have to do after school?Do my homework,of course.A.WhatB.WhenC.WhereD.How4.late for school again.Sorry,I wont.A.Not beB.Dont beC.Not D.Dont5.Which of the following pictures means“Please b
5、e quiet”?,.句型转换1.We have to stay at home.(改为一般疑问句)youto stay at home?2.Bob has to get home before nine oclock.(改为否定句)Bob get home before nine oclock.3.We can wear our own clothes.(改为一般疑问句,并作否定回答)youyour own clothes?No,we.答案:1.Do;have2.doesnt have to3.Can;wear;cant,.将栏中的问句和栏中的答语匹配1.Can we eat in the classroom?2.Can students talk in the hallways?3.Do we have to wear a uniform?4.What is the first rule?5.Do I have to wear a hat?,A.Dont fight.B.No,you dont have to.Its not cold today.C.Yes,we do.D.No,we cant.E.Yes,they can.答案:15.DECAB,