單元語法沙龍Unit4Theartofhavingfun自主學(xué)習(xí)語法現(xiàn)象觀察下列句子，按照祈使句的類型進(jìn)行分類1.Doyourhomeworkcarefully. 6.Notalkingduringthetest.2.Bequietinthelibrary. 7.Letmehelpyouwithyourbags.3.Don’tforgettoturnoffthelights. 8.Nosmokingintherestaurant.4.Becarefulwhenyoucrossthestreet.5.Let’sgoforawalkafterdinner.Do型祈使句：__________

Be型祈使句：__________Let型祈使句：__________

No型祈使句：__________1；32；45；76；8合作探究語法考點(diǎn)祈使句祈使句是用來表示請求、命令、建議、勸告等的句子。通常省略主語you，句首用動詞原形。考點(diǎn)1祈使句的肯定形式·Doyourbestintheexam.考試時要盡力而為。·Becarefulnottofalloffthebike.騎自行車時要小心，別摔下來。·Letmeshowyouhowtodoit.讓我來給你演示怎么做。考點(diǎn)2祈使句的否定形式·Don’tforgettowatertheplants.別忘了給植物澆水。·Don’tbeafraidofmakingmistakes.不要害怕犯錯誤。·Don’tletthechildrenplaywithsharptools.不要讓孩子們玩鋒利的工具。·Noparking!禁止停車！敲黑板為使語氣更委婉，可以在祈使句的句首或句尾加please。please在句尾時，常用逗號和前面隔開。如：Don’tclosethedoor,please.請不要關(guān)門。對點(diǎn)突破語法專練一、單項(xiàng)選擇1.[綏化]“LiMing,________yourhomeworkfirst,andyoucanwatchTVfor30minutes,”saidhismum.A.doesB.didC.doC2.________wakeupyoursister,Ben.Sheneedsagoodsleep.A.Don’tB.Doesn’tC.Aren’tD.Can’tA3.Frank,________playbasketballinthestreetnexttime.Youmaygethitbyacar.A.doesn’tB.don’tC.mustD.mustn’tB4.—Don’teatinclass,John!—________.A.GoodideaB.ThanksalotC.Sorry,Mr.SmithD.ThankyouC5.________swimintheriveralone,Karen.It’stoodangerous.A.NotB.Don’tC.Doesn’tD.BenotB二、按要求完成句子6.Wegotothelibrarytoreadbooksontheweekend.(用let改為祈使句)______________tothelibrarytoreadbooksontheweekend.7.Openthedoor.(改為否定句)________________________thedoor.Let’sgoDon’topen8.Listentomusicinclass.(改為否定句)_________________________________________________9.Youcan’tarrivelateforclass.(改為祈使句)____________________lateforclass.10.Don’tsmokehere!(改為同義句)__________smoking!Don’tlistentomusicinclass.Don’tarriveNo三、用括號中所給詞的適當(dāng)形式填空Wehavemanyrulesinourschool.11.____________(wear)ourschooluniformsinschool.12.____________(not)belateforschool.13.____________(listen)totheteachercarefullyinclass.TheserulesaregoodforourstudyandIlikethem.14._____________________(notbring)phonestoschool.15.____________(not)gotothemoviesonweekends.Ithinktheserulesarenotgood