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1、Grammar B Grammar B Using should and mustUsing should and mustHowtolookafteryourpet?Keepitclean.Brushitsfur.Dontgiveherashower.Dontpullitsears.Youshouldkeepitclean.Youshouldbrushitsfur.Youshouldntgiveherashower.Youshouldntpullitsears.Howtolookafteryourpet?Giveitcleanwater.Changethewateronceaweek.Don
2、tgiveittoomuchfood.Dontholditinyourhand.Dontputitinthesun.Youshouldgiveitcleanwater.Youshouldchangethewateronceaweek.Youshouldntgiveittoomuchfood.Youshouldntholditinhand.Youshouldntputitinthesun.Readthefollowingsituationsandthinkaboutwhatyoullsaytothem,usingshouldandshouldnt.A.Simonwaslateforschoolt
3、hismorningbecausehegotuplate.Youshouldgotobedearly.Youshouldgetupearly.Youshould.Youshouldntbelateagain.B.Onyourwayhome,yousawapurseontheground.Youshouldgiveittothepolice.Youshouldwaitfortheowner.Youshouldnttakeithome.Weuseshouldandshouldnottogiveadviceandtotellpeoplewhatisthebestorrightthingtodo.1.
4、You_doyourhomeworkcarefully.Fillintheblanks:shouldSummary2.You_giveseatstotheoldpeopleonthebus.3.You_speaktotheoldpeopleloudly.4.You_sitonthetable.Itisntpolite.shouldshouldntshouldntshouldntshould改同义句改同义句1.Itisbadforyoureyestoreadinthesun.You_readinthesun.2.Itisgoodforyourhealthtoexerciseforhalfanho
5、uraday.You_doexercisehalfanhouraday.1.当别人需要帮助时当别人需要帮助时,我们应当帮助他我们应当帮助他们。们。2.你不应该花很多时间玩电脑游戏。你不应该花很多时间玩电脑游戏。Weshouldhelppeoplewhentheyneedhelp.Youshouldntspendtoomuchtimeplayingcomputergames.翻译翻译Ifyouarereadinginalibrary,whatmustyoudoandmustntyoudo?keepquietkeepthebookscleanImust(do)Discussionspeakloud
6、lymakealotofnoisetakeanyfoodtothelibrarythrowrubbishtakeanybooksormagazinesoutofalibraryImustnt(do)Isitnecessaryforustowearsunglasses?Yes,youmustwearthem.Isitimportanttowalkthedogeveryday?Isitimportanttotakethedogtothepark?Yes,youmustwalkiteveryday.No,Youmustnttakethedogtothepark.Weusemustandmustnot
7、totellpeoplethatitisnecessaryorveryimportanttodoornottodosomething.Weuse“mustnt”totellpeoplethatitisnecessaryorveryimportantnottodosomething.Summary1.You_putonyourcoat,itscold.2.You_doyourhomeworkfirst.3.You_spendtoomuchtimewatchingTV.4.You_playwithfire.Fillintheblanks:mustmustmustntmustnt1.Donttouc
8、hthedogsnose.You_touchthedogsnose.2.2.Itsnotnecessarytofeedgoldfishtoomuch.You_feedgoldfishtoomuch.mustntmustnt改同义句改同义句1.我们必须努力学习。我们必须努力学习。Wemuststudyhard.2.你必须把它还给我。你必须把它还给我。Youmustgiveitbacktome.3.他们不可以从房间里拿走任何一本书。他们不可以从房间里拿走任何一本书。Theymustnttakeanybookoutoftheroom.Translatesentences4.我必须每天下午给我的鹦鹉喂
9、食吗我必须每天下午给我的鹦鹉喂食吗?MustIfeedmyparroteveryafternoon?No,youneednt.Differencesbetweenshouldandmustmust比比should语气更强烈，语气更强烈，而而mustnt表示禁止做某事或不允许做某事表示禁止做某事或不允许做某事1.You_bringyourpettoschool.2.They_comeearliernexttime.3.You_keepquietinthelibrary.4.We_spendtoomuchtimewatchingTV.mustntshouldmustshouldntFinishth
10、esentencesinpartB1/Dogslikelotsofexercise.You_walkthemintheparkonceadayifyouwantthemtobehealthy.Ifyoudonthaveenoughtime,you_getone.shouldnotmustFisharegoodpets,butyou_givethemcleanwater.You_givethemtoomuchfood.Ifyouhavearabbit,you_cleanitshutcheveryday.shouldmustmustnotCatsarefriendlyandyoudontneedt
11、owalkthem.Ithinkyou_getacat.shouldacleanthecage/must/onceaweek/YouYoumustcleanthecageonceaweek.B3Rearrangethewordsandmatchthereplieswithletters:bYou/atleastonceaday/should/takeherouttotheparkYoushouldtakeherouttotheparkatleastonceaday.24cYou/agoodcatbrush/get/shouldYoushouldgetagoodcatbrush.dgetadog
12、/you/Ifyourflatisverysmall/shouldnotIfyourflatisverysmall,youshouldnotgetadog.eshould/abirdoragoldfish/get/YouYoushouldgetabirdoragoldfish.313fYou/yourdog/must/moreoften/walkYoumustwalkyourdogmoreoften.gtherightwaytolookafterbirds/You/getabook/should/aboutYoushouldgetabookabouttherightwaytolookafterbirds.42hbrushyourcatsfur/should/everyday/YouYoushouldbrushyourcatsfureveryday.1
