【精品更新】UnitSectionA(GrammarFocusc)-完整版课件

SectionA2GrammarFocus-3cUnit4Don'teatinclass.1.TolearnImperativesDon’t…:Don’truninthehallways.2.Tolearntousecanforpermission:Canweeatintheclassroom?3.Tolearntousemodalverbshaveto&must:Wehavetobequietinthelibrary.Wemustbeontimeforclass.1.不要在楼道里跑。_______________________2.不要打架。_______________3.有什么规矩？__________________________4.我们必须按时上课。__________________________Don’tfight.Don’truninthehallways.Whataretherules?Wemustbeontimeforclass.GrammarFocus5.我们可以在教室里吃东西吗？

_____________________________6.不能。但我们可以在餐厅里吃东西。____________________________________________________________7.我们可以在上课的时候带帽子吗？___________________________Canwewearahatinclass?No,wecan’t,butwecaneatinthedininghall.Canweeatintheclassroom?8.他在学校里必须穿校服吗？_________________________________9.是的，必须。/不，不必。_______________________________10.你们必须做什么？_______________________________11.在图书馆里我们必须保持安静。

________________________________Yes,hedoes./No,hedoesn’t.Doeshehavetowearauniformatschool?Whatdoyouhavetodo?Wehavetobequietinthelibrary.Observeandlearn.Don’teatintheclassroom.Don’t

fight.Don’t

runinthehallways.Don’tarrivelateforclass.Don’t

listentomusicinclass.Haveathink:祈使句是怎样构成的？一般在什么情况下会用祈使句？Don’t…不要做……祈使句一般用来表示请求、命令、劝说、号召、警告等。在祈使句中,通常省略第二人称主语you。肯定式以动词原形开头，否定式一般在动词原形前加don’t。祈使句一、祈使句的肯定式1.以行为动词原形开头，简称Do型。

e.g.Comehere.到这儿来。2.以动词be开头，简称Be型。

e.g.Bequiet,please.请安静。3.以Let开头，简称Let型。e.g.Let’sgo!咱们走吧!

注意：有时可在祈使句的句首或句尾加上please，使语气显得客气、有礼貌。如果在句尾加please，应该用逗号与前句隔开。e.g.Gothisway,please.请这边走。二、祈使句的否定式1.Do型和Be型的否定式是在句首加don’t。e.g.Don’tsithere.不要坐在这儿。

Don’tbelate.别迟到。2.以let开头的祈使句，其否定式有两种：一种是直接在句首加don’t，另一种是“let+宾语+not+动词原形+(其他)”。e.g.Don’tlethimgo.不要让他走。Let’snotgothere.咱们别去那儿。注意：“No+名词/动词⁃ing形式”表示禁止或规劝，常用于公共场所。e.g.Nophotos!禁止拍照！

Nosmoking！

禁止吸烟！【运用】汉译英。1.

请看图片，Jim！2.

不要在晚饭后吃冰激凌。3.

在图书馆里请保持安静。Begoodtofriends.Letmehelpyou.Don’tfightwithyourfriend(s).4.

对朋友们要好。5.

让我帮助你。6.

不要和你的朋友打架。Begoodtofriends.Letmehelpyou.Don’tfightwithyourfriend(s).ObserveandlearnHaveathink:1.情态动词在用法上有什么共同点？2.can在本单元主要表示什么含义？它还可表达什么意思？3.haveto在用法上与其他情态动词有何区别？情态动词can,must,haveto后面都接动词原形本单元can意为“可以”，表示请求、允许。如:I

can

dance

and

sing.2)can还可表示能力,“能，会”。如:--Can

the

students

run

in

the

hallways?

--Yes,theycan./No,theycan’t.Wecan’teatintheclassroom.

情态动词can肯定句:主语+can+动词原形+其他.否定句：主语+cannot/can’t+动词原形+其他.疑问句:Can+主语+动词原形+其他?肯定回答：Yes,主语+can.否定回答：No,主语+can’t.情态动词can的句型结构:情态动词must表说话人的主观看法，表示必须、必要。无人称和数的变化，不能单独使用，必须与其后的动词原形构成谓语。句型结构：主语+must+动词原形+其他.如:Youmustcomeintime.你必须按时来。

Thechildrenmustbebackbefore6o’clock.孩子们必须6点前回来。情态动词musthaveto表示必须,强调客观需要,有不得不、被逼无奈做某事的意思。此词既有人称、单复数的变化,也有动词时态的变化。其否定形式和疑问句形式均需要借助助动词do才可以进行变化。情态动词havetohaveto的句型结构:肯定句：主语＋have/has/had

to＋V原形＋其他.否定句：主语+don’t/doesn’t/didn’t

have

to＋V原形＋其他.疑问句:Do/Does/Did＋主语＋have

to＋V原形＋其他?如:Shehastolookafterhermotherathome.Wedon’thavetocleantheroomtoday.--Doeshehavetogotobednow?--Yes,hedoes.//No,hedoesn’t.LibraryRulesDon’ttalk.________________________________________________Writetherulesfortheschoollibrary.Don’tlistentomusic.Don’teatordrink.Don’ttakephotos.3aBequiet?(she/haveto/inthelibrary)Q:Doesshehavetobequietinthelibrary?A:Yes,shedoes.

Usethewordstomakequestionsabouttherules.Thenwriteanswersaccordingtoyourschool.3b2.Eat?(he/haveto/inthedininghall)Q:________________________________?A:_____________3.Listentomusic?(we/can/inthehallways)Q:________________________________?A:_____________4.Wearahat?(we/can/intheclassroom)Q:_____________________________?A:____________Yes,hedoes.DoeshehavetoeatinthedininghallCanwelistentomusicinthehallwaysNo,wecan’t.CanwewearahatintheclassroomNo,wecan’t.Atmydreamschool,wedon’thavetocometoschooleveryday…Wecaneatinclass…Makeupfivecoolrulesforyourdreamschool.Shareyourruleswiththeclass.YourclassmatesvotefortheCoolestSchool!3cWedon’thavetowearschooluniforms…Wedon’thavetodohomeworkeveryday…Discussandmakerulesforthecomputerroominyourschool.ComputerRoomRules_____________________________________________________________________________Wemustbequietinthecomputerroom.Don’truninthecomputerroom.Don’teatordrinkinthecomputerroom.Wearslippersinthecomputerroom.ComputerRoomRules_______________________________________________________________________________________________________________________________________________________________________________Wemustbequietinthecomputerroom.Don’teatordrinkinthecomputerroom.Don’truninthecomputerroom.Wearslippersinthecomputerroom.Cleanthecomputerroomeveryday.(be)ontime

准时,listentomusic

听音乐inthehallways

在走廊里inthedininghall

在餐厅里inclass

上课；听课；在课堂上alotof

许多；大量,haveto

必须；不得不musicplayers

音乐播放器weartheschooluniform

穿校服dreamschool

梦想中的学校Bequiet.

安静。Don’tbelateforclass.

上课不许迟到。Ⅰ.

根据语境从方框中选择恰当的单词填空。1.IlikeLucy.Sheisa(n)_________girl.

2.It’svery_________forallofustobehealthy.3.Tinais_________.Pleaseaskhertocomein.4.Jackie_________awhiteT-shirt.Helooksverycool.5.—Tony,please_________yourviolintoschoolthisafternoon.

—OK,Iwill.quietoutside,wear,important,bring,quietimportantoutsidewearsbringⅡ.

根据句意及提示完成下列句子。1.In

Beijing,Mr.Greenhas____________(许多)friends.2.Where’smy_____________(校服),Mom?3.Don’t______________(迟到)class,Jane.4.InBob’sroomIseesomenew____________(音乐播放器).5.Jack____________(不得不)cleanhisroomeveryday.alotof/manyschooluniformbe/arrivelateformusicplayershastoⅢ.

完成英语句子，每空一词(含缩略形式)。1.

玛丽不得不在学校吃午饭吗？________Mary_________________eatlunchatschool?

2.

我们在课堂上必须讲英语。We_________________Englishinclass.3.

他们现在可以在教室里读书吗？________they________intheclassroomnow?

DoeshavetomustspeakCanread4.

早餐不要吃鸡肉