Unit2

Norules,NoorderSectionAGrammarLet’swatch

andanswer.DoyouknowtherulesinGuangzhouwhenyoutakeasubway？Donoteatordrink.Noeatingordrinking.Youcan’t/mustn’teatordrink.Lookatthesignandwritetherulesforthesign.Howtowritetherulesforthesign?①Do型祈使句Turnright!Standup!Don’tstandup!Don’tturnright!肯定形式：動原(+賓語)

+其他.否定形式：Don’t+動原+其他.Walkinthehallway.

Don’trun!②Be型祈使句Bequiet!Becareful!Don’tbecareful!Don’tbequiet!肯定形式：Be+表語（名詞或形容詞）+其他.否定形式：Don’tbe+表語（名詞或形容詞）+其他.

Bepoliteandtreatoneanotherwithrespect.

Don’tbesad!③let型祈使句Let’sgotoschool!Letmehelpyou!Don’tletmehelpyou!Let’snotgotoschool!肯定形式：Let+賓語+動詞原形+其他.否定形式：Don’tlet+賓語+動詞原形+其他.Let+賓語+not+動詞原形+其他.Let’sgo.Letusgo.No+動詞-ing/名詞!禁止④肯定祈使句②Be型祈使句③let型祈使句①do型祈使句否定祈使句Don’tbe+表語+其他.Don’tlet+賓語+動原+其他.Let+賓語+not+動原+其他.Don’t+動原+其他.Be+表語+其他.動原+其他.Let+賓語+動原+其他.No+動詞-ing/名詞!③No型祈使句Let’spracticeDon’tbe1.It’sanimportantmeeting.

(not,be)late.2.

(not,make)anynoise!Yourmotherissleeping.3.

(not,talk)and

(read)aloud.4.Thenoticeonthewallsays“

”.(nosmoke)5.

(look)out!Acariscoming.6.

(not,let)thebabycry.7.Let’s

(notsay)anythingaboutit.Don’ttalkDon’tmakereadNosmokingLookDon’tletnotsayLet’spractise.Completethesentenceswithcan,can’t,must,havetoorhasto.1.Ann______doherhomework,soshegoestoaskherteacherforhelp.2.Youdon’t______cleanyourroomtoday.Youcandoittomorrow.3.—______JimspeakEnglish?—No,hecan’t.4.—______Iwearmyschooluniform?—Yes,youmust.5.—Whatdostudents_________inlibrary?—They______keepquiet.can’thavetoCanMusthavetodohaveto3aReadthesentences.Walkinthehallway.Don’trun!Bepoliteandtreatoneanotherwithrespect.Don’tlitter./Youmustn’tlitter./Youcan’tlitter.Canwebringourphonestoclass?No,wecan’t.Wemustkeeptheminourlockers.Canweeatsnacksinclass?No,wecan’teatinclass.Wehavetoeatinthedininghall.情態動詞情態動詞的用法？Readthesentencesanddiscusswithyourgroupmembersandmakeasummary.一、情態動詞can的用法Canwebringourphonestoclass?No,wecan’t.Wemustkeeptheminourlockers.can可表示能力、許可、請求等。其否定形式為can’t/cannot。1.表示能力，意為“能，會”。Thetwinscandraw,buttheycan’tswim.2.表示許可，意為“可以”。Youcan’tswimintheriver.3.表示請求，意為“可以”。CanIborrowyoureraser?Yes,youcan.Can“兩不變、兩搞定”must表示主觀的義務和必要，多譯為“必須”。

（個人愛好，個人主觀想法） haveto表示客觀需要做的事情，多譯為“不得不”。（外界客觀原因，不得不學）eg:IlikeEnglish,ImuststudyEnglishhard.eg:Idon’tlikeEnglish,butIhavetostudyEnglish.二、情態動詞haveto和must的用法No,wecan’t.Wemustkeeptheminourlockers.No,wecan’teatinclass.Wehavetoeatinthedininghall.1.Don’tjumpthequeue.You___________waityourturn.2.I_____feedmydogmanykindsoffood,butI____givehimchocolate.Itisbadforhim!3.A:CanIleavetheclassroomifIdon’tfeelwell?B:Yes,butyou___________tellyourteacheraboutitwhenyou______beabsentfromclass.4.A:Hey!CanIlookatyourbook?B:Shh,we___________talkquietlyinthelibrary.5.A:Canyouputonyourseatbelt?We___________wearonewhenwe’reinacar.B:Sure.Thanks!3bCompletethesentencesusingcan,haveto/must,orcan’t/mustn’t.haveto/mustcanhaveto/musthavetocan’t/mustn’thaveto/musthaveto/must插隊Itis+adj.(forsb)todosth缺席、不在Donotparkhere.Noparking.Youcan’t/mustn’tparkhere.3cLookatthefirstsignandreadtherules.Thenwritetherulesfortheothersigns.Donottakephotoshere.Nophotos.Youcan’t/mustn’ttakephotos.Donotswimhere.Noswimming.Youcan’t/mustn’tswimhere.3cLookatthefirstsignandreadtherules.Thenwritetherulesfortheothersigns.Donotfeedbirds.Nofeeding.Youcan’t/mustn’tfeedbirds.3dIngroups,brainstormthreerulesforoneoftheplacesbelow.Thendrawsignstoshowtherules.Shareyoursignsinclassandexplainwhattheymean.

libraryschooldininghallparkcinemahospitalInthelibrary：

Wemustkeepquiet.Wemustn’tmakenoise.Wecan’t...一、單項選擇( )1.—______Iuseyourpen?—Sure.Hereyouare. A.Must B.Need C.May D.Should( )2.You______wearaseatbeltinthecar.It'sthelaw. A.can B.mayC.needD.must( )3.—______youplayfootball? —Yes,Ican.ButI______playitwell. A.Can;can’t B.Do;can’t C.Are;can'tD. Can;mustn't( )4.We______belateforclass.Wemustbeontime. A.don'thaveto B.can’t C.mustn’t D.needn’t( )5.______talkloudlyinthelibrary.Weshouldkeepquiet. A.Do B.Don’t C.Not D.NoCDACBLet’sroleplay.Workingroups,talkaboutschoolrulesandmakeaposter.3d.Ingroups,brainstormthreerulesforoneoftheplacesbelow.Thendrawsignstoshowtherules.Shareyoursignsinclassandexplainwhattheymean.Park：

Wemustn’tpicktheflower.Wemustn’tlitter.Wecan’twalkonthegrass.Cinema：

Wemustn’ttalkloudly.Wemustn’tusemobilephonesduringthemovie.Wemusttakeawayourtrashafterthemovie.Schooldininghall：

Wemustn’twastefood.Wemustkeepthetabletidy.Wecan’tjumpthequeneforfood.Hospital：

Wemust...二、根據要求改寫句子Youmustwearauniformatschool.（改為否定句）Wecanlistentomusicintheclassroom.（改為一般疑問句，并作否