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Unit2NoRulesNoOrder

重点语法精讲精练(讲义)

一、祈使句

一、语法概述

祈使句表达请求、命令、警告、劝告、禁止等含义。一般以动词原形开头,常省略主语“you”,句末用感

叹号或句号,读时常用降调。

Goandwashyourhands.去洗手。(命令)

Bequiet,please.请安静。(请求)

Bekindtoyoursisters.对姐妹要和善。(劝告)

Watchyoursteps.走路小心。(警告)

Lookout!Danger!小心!危险!(强烈警告)

Keepoffthegrass.勿践踏草坪。(禁止)

Openthedoor,please.请把门打开。

Don'tforgettotakeyourmedicine,Alice谖丽丝,不要忘记吃药。

二、祈使句的类型

l.Do型

肯定形式:实义动词原形+其他。例如:Openthedoor!(打开门!)

否定形式:Don't+实义动词原形+其他。例如:Don'tforgettoturnoffthelights.(别忘了关灯。)

Listentomecarefully,please.请仔细听我讲。

Don*tdoitlikethat1不要那样做!

Mary,don'tbelateforclassagain.玛丽,上课不要再迟到了。(容易错用doesn't)

【即学即练】

1.—yourhomeworkheretomorrow,Lucy.

—Allright,MsLi.

A.BringB.BringsC.TobringD.Bringing

2.Be型

肯定形式:Be+形容词。例如:Becareful!(小心!)

否定形式:Don't+e+形容词。例如:Don'tbelazy.(别偷懒。)

Bequiet,boysandgirls!大家安静!

【即学即练】

1.quiet,please.Youareinthelibrary.

A.KeepB.TokeepC.KeepingD.Keeps

3.Let型

肯定形式:Let+宾语+动词原形+其他。例如:Let*splayfootball.(咱们踢足球吧。)

否定形式:

Don't+let+宾语+动词原形+其他。例如:Don'tletthedoginthehouse.(别让狗进屋子。)

Let+宾语+not+动词原形+其他。例如:Lethimnotgooutalone.(别让他一个人出去。)

Letthemnotgooutforawalk.ltisraining.让他们别出去散步了。下雨了。

【即学即练】

1.(24-25七年级上•广东珠海•阶段练习)Let'sthereturn(00)ofthepandaFuBao.

A.welcomeB.towelcomeC.welcomesD.welcoming

4.No型

结构:No+名词/动词-ingo例如:Noparking.(禁止停车。);Nolittering.(禁止乱扔垃圾。)

Nophotos.不许拍照。

Noparking!禁止停车!

Noparkinghere.此处不准停车。

5.其他

形式:直接用名词、副词或“名词+副词”等。例如:Attention!(注意!);Forward!(向前!);Handsdown!

(把手放下!)

三、难点突破

祈使句与复合句的转换

if引导的条件状语从句可以转换成“祈使句+and/or+简单句”结构。

Ifyoudon'thurry,you'llnotcatchtheearlybus.

二Hurryup,oryou'llnotcatchtheearlybus.如果你不快点,就赶不上早班公交车了。

Ifyouworkharder,you'llcatchupwithyourclassmates.

=Workharder,andyou'llcatchupwithyourclassmates.如果你再努力些,你就会赶上你的同学。

拓展

1.强调:有时为强调,可在句首加“Do”或将祈使句的主语表示出来。例如:Docomein.(务必进来。);

Youcleantheclassroom.(你打扫教室。)

2.委婉客气:为使祈使句语气委婉、客气,可在句首或句末加“please",当"please”用在句末时,常用逗

号与其余部分隔开。例如:Pleasepassmethebook.(请递给我那本书。);Comein,please.(请进。)

巧学妙记

祈使句表命令,还表请求或建议。

动词原形放句首,主语是you常省去。

Don't置前表否定,let否定有两种。

想要客气please,Do置开头强语气。

祈使句的回答

1.由于祈使句所表达的动作是还未发生的,因此对它的应答通常要用“一般将来时”回答时一般用“will”或

Wont"。回答肯定形式的祈使句用“will",回答否定形式的祈使句用“wont”。

一Pleaseturnoffthelightwhenyougoout.当你出去的时候请关上灯。

—OK,Iwill.好的,我会的。

Don*tbelateanymore.不要再迟到了。

Sorry,!wont对不起,我不会再迟到了。

2.以let开头的句式的肯定回答多用“Goodidea.",否定用“Sorry,…”

一Let'schatontheInternet.我们上网聊天吧。

一Goodidea.好主意。

【即学即练】

一、用所给词的正确的形式填空。

1.(noteat)inclass.

2.Wemust(be)carefulwhenwecrossthestreet.

3.Ifsimportantforus(learn)Englishcarefully.

4.No(swim)intheriver.

5.(listen)totheteachercarefully.

二、单项选择。

1.It'ssnowing.Pleasewarmclothes.

A.wearB.wearsC.wearingD.towear

2.Bill,talkinclass.Wemustlistentheteacher.

A.doesn5t;withB.doesn't;toC.don't;withD.don't;to

3.meapostcardwhenyougettoAustralia.Don'tforgetit!

A.TosendB.Sends

C.SendingD.Send

4.Jim,readinthesun.Ifsbadforyoureyes.

A.can'tB.isn'tC.doesn'tD.don't

5.Mary,totheteacher,please.

A.listeningB.listensC.tolistenD.listen

情态动词can/must/haveto

一、can的用法

can是情态动词,意为"能;会",表示某人或某物具备的能力,还可用来提出请求,没有人称和数

的变化,后面直接接动词原形。下面来看一下它的具体用法。

1.表示有能力做某.事,意为"能;会

IcanspeakEnglish.我会讲英语。

Hecanplaybasketball.他会打篮球。

2.表示许可,意为“可以"o

Youcansithere.你可以坐在这儿。

3.情态动词can表示推测,意为“可能”,常用语否定句、疑问句中。

Itcan^beacat.Ithasashorttail.它不可能是猫,它有一个短尾巴。

辨析:can和beableto的区别

情态动词用法

can只能用于一般现在时和一般过去时。

beableto可用于各种时态。表示经过努力做成某事只能用beableto.

Willyoubeabletocamerathelecturetomorrow?明天你能把讲座录下来吗?

【即学即练】

1.Pigeonsflyatspeedsofover100kmperhour.Thafsasfastasmydad'scar!

A.mustB.mustn'tC.canD.can't

2.一Tomdrawpictureswell?

——Yes,hecan.Helikesit.

A.CanB.DoesC.WouldD.Is

二、must的用法

(1)must表示主观义务,意思是”应该,必须”,其否定式mustn't意为"不应该,不准”。情态动词

不能单独作谓语动词,必须和动词原形一起构成谓语。

Wemustgettherebeforefiveo'clock.我们必须在五点钟前赶到那儿。

Youmustn'tbreaktherules.你不要破坏规定。

Hemusthaveseenthefilmlastnight.他昨天晚上肯定看了那场电影。

YoumustreadabookbeforeyouwatchTV.在看电视前你必须读书。

对用must所提问题的否定回答,常用needn"或don'thaveto,意思为:不必。

MustIstayhereafterschool?放学后我还得留在这儿吗?

No,youneedn't/don'thaveto.不了,没有必要。

(2)must表示推测,意思为:一定,必定(只用于肯定句中)。

Hemustbeourheadmaster.他肯定是我们的校长。

(3)must用于否定句时,mustn't意为”不允许,禁止",而不表示"不必"。

Youmustn'tbelateforschool.你千万不要上学迟到。

(4)以must开头的一般疑问句,若作否定回答,可以用needift或don'thaveto,不用mustn't。

—MustIcleanalltherooms?我必须打扫所有的房间吗?

—No,youneedn,t/don,thaveto.不,你不必。

【即学即练】

1.一Ifsbeenrainingalotthisyear,andIalwayshavetogotoschoolintherain.

-I'msorrytohearthat.Youbetiredoftherain.

A.canB.shouldC.mustD.will

2.一MustIfinishtheschoolprojecttoday?

-No,you.Youmaydoittomorrowsinceyouarealittletiredtoday.

A.mustB.needC.mustn'tD.needn't

3.Toensurethesafetyofallstudents,theschoolhasarulethatyouleavetheclassroomduringthe

classwithoutpermission.

A.mustB.mustn'tC.don'thavetoD.can

三、haveto的用法

表示客观要求,意思为:不得不;必须;除此之外,别无选择。使用haveto应注意以下几点:

(1)haveto后接动词原形,意为"必须做……;不得不做……

Wehavenofoodhome,youhavetogoandgetsome,Tom.家里没有食物了,汤姆你得去买一些来。

(2)haveto有人称、数和时态的变化,其第三人称单数形式为hasto。

Shehastohelphermommakedinner.她不得不帮她妈妈做晚饭。

There?snobushere,sowehadtowalkhome.现在这里没有汽车了,我们只好走路回家了。

(3)含有haveto,hasto的句子需分别借助动词do,does构成疑问句或否定句。

Dotheyhavetogonow?他们得现在回家吗?

Youdon'thavetogoifyoudon飞wantto.如果你不想去,你就不必去。

辨析:haveto可以用于多种时态;而must只用于一般现在时或一般将来时。

Thecompositionisduetohandinthismorning,soIhadtofinishitlastnight.

作文今天早晨到期,因此我不得不昨天晚上完成。

辨析:must和haveto的区别

情态动词用法

must“必须”,表示说话人的主观意志;只有must这一种形式。

haveto“必须,不得不”,强调客观需要;有人称、数和时态的变化。

Youhavetowearsportsshoeswhenyouclimbamountain.爬山的时候你必须穿运动鞋。41.(22-23

七年级上•河北保定・期末)

【即学即练】

l.Mysisterisill.Shestayhome.

A.hastoB.needtoC.havetoD.needs

2.Alicegetsuplatetoday,soshetakethenextbus.

A.mustB.hastoC.canD.could

【当堂训练】

一、单项选择

()1.Jim,fightwithyourelderbrother.

A.doesn'tB.don'tC.notD.no

()2.Theparkisfaraway.Wetakethesubwaytothepark.

A.mustB.canC.hastoD.haveto

()3.—Don'tmakenoiseinthelibrary.

A.Yes,IcanB.No,Ican'tC.Yes,IknowD.Sorry,Iwon't

()4.—Mustyoudothedishesnow?

—No,I_____.ButIwanttodoitnow.

A.can'tB.mustn'tC.don'tD.needn't

()5.-MustIparkmycarbehindthebuilding?

一No,you.Youparkithere.

A.mustn't;needB.don'thaveto;mayC.maynot;mustD.needn't;must

()6.一Couldyoucomewithusthisafternoon?

——Sorry,I.Itakecareofmylittlesisterbecausemymotherisout.

A.can?t;mayB.couldn't;havetoC.can?t;havetoD.couldn't;may

()7.-Tom,canyouwatchTVonweekends?

一Yes.ButIfinishmyhomeworkfirst.

A.canB.mayC.mustD.can't

()8.Wecanthebusstopbefore5o'clock.

A.arriveatB.arriveinC.goonD.get

()9.一MustItellhimeverything?

-No,you.Heknowseverything.

A.don'thavetoB.mustn'tC.mustD.haveto

()10.Mysister(nothave)topracticethepianoeveryday.

A.doesn'thaveB.didn5thaveC.won?thaveD.doesn9thaveto

()11.一Mustwesingasongattheparty?

一No,you.

A.mustn'tB.haventoC.nothavetoD.don5thaveto

二、句型转换。

1.MustIweartheschooluniformeveryday?(补全答句)

No,youdon't.

2.1canrideahorse.(改为一般疑问句并作肯定和否定回答)

ahorse?

Yes,.

No,.

3.1havetodomyhomeworkafterschool.(对画线部分提问)

you_____afterschool?

4.Standoutsidetheclassroom.(改为否定句)

outsidetheclassroom.

5.Don'tfightintheclassroom.(改为同义句)

intheclassroom.

6.Youcan'twatchTVonschoolnights.(改为否定祈使句)

TVonschoolnights.

三、语法填空

A

LinTaostudiesinafamousmiddleschool.Therearemanydifferent](rule)inhisschool.

Hemustweartheuniform2schooldaysandhemust3(keep)shorthair.Hecan'tbe

late4classandcan'tbe5(noise)intheschoollibrary.

LinTaothinksalltheseare6(importance)andtheyaregoodforhisgrowth.7healways

followsthem.Forexample,everymorning,healwaysremembers8(get)upearly.Thenhearrives9

thebusstopandtakesabus.Onthebus,helikes10(listen)toEnglishsongs.Aftergettingoffthe

bus,heridesasharedbiketoschool.Heisalwaysontime.

B

Ifsagoodideaforchildrentogotoasummercamp.Nowlefsreadsomecamp](rule).It'sgood

2youtolearnaboutthem.

Norunninginthecamp.Forchildren,thecampisagoodplacetohave3greattime.Theycan

sing,danceor4(have)apicnichere.Andchildrencanplantheircamp5(different).Butit's

dangeroustoruninthecamp.It'seasytofalldownandyoumayhurtyourlegsorhands.

Don'teatfoodintents.Childrenliketoputsomecakesorchocolatesin6(they)tents.Some

animalscansmellthem.Itwillbekindofscary7theanimalsgetintothechildren'stents.

It'snotallowedtoplaywithfire.Mostofchildrenare8(interest)inthefire.However,itisunsafe

forbothchildrenandtreesaroundthecamp.

Neverleavethecampalone.Youmuststaynearthecamp.There9(be)manykindsofanimalsin

theforest.Whenyouwanttowalkaround,youmustgowithyourfriendsorteachers.Childrenareveryeasyto

get10(lose).

Nolittering(舌L扔垃圾)anywhere.Youshouldtrytokeepyourcampclean.Inthisway,allthepeoplecan

enjoythebeautyofnature.

Unit2NoRulesNoOrder

重点语法精讲精练(题型突破)

一、单项选择。

1.一Excuseme,mayIsmokehere?

一Sorry!Lookatthesign.Yousmokeinthehospitalroom.

A.maynotB.mustn'tC.needn'tD.don5thaveto

2.一Lookatthesign."swimming!,9

一Soitbedangeroustoswimhere.

A.Don't;mustB.Not;mayC.Notbe;canD.No;must

3.Schoolsandparentsmakerulestohelpus,wefollowthem.

A.canB.havetoC.needto

4.Mymomwantstodrivemetoschool,soI_takethesubway.

A.mustB.mustn'tC.havetoD.don'thaveto

5.-Itakethisbookoutofthelibrary?

-Tmafraidyoucan't.

A.ShouldB.MustC.NeedD.May

6.______carefullywhenyoucrosstheroad.

A.LookB.LookingC.TolookD.Looked

7.一MustIcleantheclassroomnow?

-No,you_____.Youcandoitafterclass.

A.mustn'tB.can'tC.needn*tD.shouldn't

8.You______playfootballinthestreet.It*sdangerous.

A.mustn'tB.needn'tC.wouldn*tD.couldn't

9.一Awarm-up(热身)isveryimportant.Weshoulddoitbefore______everyday.

一Youareright.

A.runB.ranC.runsD.running

10.一Doyou________cleantheclassroomeveryday?

一Yes.Weusuallycleanitafterclass.

A.havetoB.hastoC.mustD.can

11.一Mom,canIgoswimming?

一No.You________doyourhomework.

A.hastoB.havetoC.canD.could

12.—What'sthis?

-It'smymusicplayer.Iliketo______music.

A.livewithB.listentoC.gettoD.talkwith

13.一Wouldyoulikeanotherglassofwater?

-No,thanks.I________leavenow.Tonyiswaitingforme.

A.canB.mayC.mustD.could

14.一Mustwesingasongattheparty?

一No,you________.

A.mustn'tB.haven'ttoC.nothavetoD.don'thaveto

15.一Hi,Bill!Whatisanimportantruleinthelibrary?

-We________bequiet.

A.havetoB.canC.mayD.mustn't

16.Youdon't________getupearlyonSundays.

A.needB.havetoC.mustD.can

17.Myteacherisverystrictusandheisalsostrictourhomework.

A.in;withB.with;aboutC.with;toD.to;at

18.ThisoldcomputerbeMrGreen's.Hiscomputerisnew.

A.can'tB.needn'tC.mustn'tD.won't

二、用所给词的正确的形式填空。

1.Please(tell)methenews.

2.(remember)towearcomfortableshoeswhenyougoclimbing.

3.一Boysandgirls,(listen)tome,please.

一OK,MrWhite.

4.Fmsorrymymothercan9t(go)there.She(have)to(cook)athome.

5.youhelpmewithmyhomework,Tony?Thenwegotothemovies.(can)

6.Ifstoolate.Ihaveto(go)homenow.

7.Tony(nothave)togotoschooleveryday.

8.(ask)Cindyforthebook.

9.一Bill,lefs(go)tothebookstore.

-Goodidea!

10.(notarrive)lateforLucy9sbirthdayparty.

11.(notlisten)tomusicinclass.

12.Lefs(meet)atmyhomeat10o'clock.

三、完成句子。

1.Youcangooutnow.(改为一般疑问句)

_____________gooutnow?

2.1canplaythedrum.(改为否定句)

Ithedrum.

3.Myfriendscanplaytennis.(改为一般疑问句)

friendstennis?

4.Hemustcleantheroomeveryday.(改为否定句)

Hetheroomeveryday.

5.Hehastogotoschoolbybus.(改为一般疑问句)

hetogotoschoolbybus?

6.Ifyouarenotcareful,youwillmakemanymistakes.(保持句子意思不变)

careful,youwillmakefewmistakes.

7.MustIfinishtheworktoday?(作否定回答)

No,.

8.Don'ttalkinthelibrary.(改为同义句)

Youinthelibrary.

9.Youarepolitetoothers.(改为祈使句)

Pleasetoothers!

四、语法填空。

A

从下面方框中选出10个单词,将其正确形式填入短文,使短文意思正确通顺(每词限用一次)。

rule,practice,join,after,luck,for,on,read,by,early

Emilyhassomany]inherfamily.Shehastodoherhomework2school.Shecan'tgoout

3schoolnights.Shehastowashthedishesafterdinner,andthenshecanwatchTV4halfanhour.

Shelikes5.Sheusuallyreadsatnight.Shehastobeinbed6teno'clockbecauseshehastoget

up7thenextmorning.She8amusicclub.

Shehasto9herguitareveryday.Shedoesn'tthinkshe's10.

B

阅读下面短文,根据上下文或括号内单词等提示,在空白处填入适当的单词或括号内单词的适当

形式。

Annaistalkingaboutruleswithherfriends.

Speaker1:Therearetoomanyrulesinourclass.Wecan'tbelate]class.Ifwedon'tfinishthe

homeworkontime,theteacherswillaskourparents2(come)toschool.Canwewearahatinclass?No,

andwemustkeep3(we)hairshort.Ithinktheserules4(real)helpusalot.

Speaker2:WhenIamfree,Ilikereading.Ithinkifs5(relax).Iusuallydosomereadinginour

schoollibrary.Canwetalkandlaughloudlyinit?No,wecan't.Wecan'teatordrinkinit,either.Besides,we

havetokeepthebookstidy.Canwetakethebookshome?Yes,butwemustgivethembackinten6

(day).

Speaker3:Ifeelterrible,7myparentsmakesomanyrulesformeathome.Imustgetupbefore

seveninthemorning.8meals,Ican'tleavethedirtydishesinthekitchen.9onlythingIcando

istodomyhomework.CanIwatchTVafter10(finish)homeworkonschooldays?No,Ican't.

五、根据文意或括号内所给单词完成文章。

Ihavealotofrulesatschool.I]arrivelateforschool.Ican'tfight,either.I2(have)

weartheschooluniformeveryday.Ourteachersareverystrict3us.Theyalwayssay,“4

talkinclass.Don'tbe5(noise)inclass.6(listen)totheteacherscarefully.^^

AthomeIalsohavemany7(rule).After8homework,Ican'trelax.Ihavetowashthe

dirty9(dish)andpractice10(play)theviolinforonehour.

六、任务型阅读。

A

阅读下面短文,根据短文内容判断句子正误。正确的涂“A”,错误的涂“B”。

Manystudentsinourcountryalwaystaketheschoolbustoschooleveryday.Parentsthinkthattakingthe

schoolbusisverysafe.Butsometimesitisalsodangerous.Somestudentsmayhaveanaccident(事故)because

theydon'tfollowtheschoolbusrules.Thenwhataretheschoolbusrules?

•Arriveatthebusstationearly.

•Waitforthebusatthebusstation.

•Don'tplayaroundthebus.

•Don'truneverywhereatthebusstation.

•Don'twalkorfightinthebuswhileitisgoing.

•Don'ttrytoleavethebusuntilitstops.

Theserulesaregoodforstudents.Pleaserememberthemanddon'tbreakthem.Soyoucankeepyourself

safe.

判断正(A)误(B)

()1.Takingtheschoolbusisalwayssafe.

()2.Studentscanruneverywhereatthebusstation.

()3.Studentscanfightinthebuswhilethebusisgoing.

()4.Studentscan?tplayaroundthebus.

()5.Studentscanbeindangeriftheybreaktheschoolbusrules.

B

请阅读下面这篇文章,根据所提供的信息,回答问题,把答案写在答题卡指定的位置上。

RonClarkisthewriterofTheEssential55,abookaboutteachingstudentstherulesforlife.Hehelped

manystudentstobebetterintheirlives.

Clark'sstorystartedathisschoolintheUS.Whenhewalkedintohisfifth-gradeclass,hemetlotsof

problems.Thechildrenweren'tinterestedinlearningandtheyoftenplayedorsleptinclass.Tohelpthem,Clark

wrotedown55rulesforthem.Soonthestudentsbecamebetterinbothstudyandlife.Theylearnedtobefriendly

toothersandtobethebestofthemselves.

SomerulesfromTheEssential55Rule1:Doyourhomeworkeverynight.

Rule2:Ifsomeoneasksyouaquestion,youshouldaskaquestionback.

Rule3:Learnthenamesofotherteachersintheschoolandsayhellotothem.

Rule4:Alwayssaythankyouwhenyougetsomething.

Clarkdoesn'tthinkit'shardtoteachhisstudentstheserules.6<Iexplain(解释)therulesonebyone,and

thenwerole-playtoshowhowtheyworks.Thefirstweekwejustpractice.Iwilltellthemwhentheybreak(违反)

arule.Afterthat,theyshouldrememberandfollowtherulesstrictly.Clarkhopeswhenhisstudentsleavehis

classroom,theseruleswillhelpthemtolivebetter.

1.WhatisthebookTheEssential55about?

2.HowmanyrulesdidClarkwriteforhisstudents?

3.Whichruleisaboutbeingkindtoothers,Rule2orRule3?

4.Whatdoestheword"they"inthelastparagraphreferto(指的是)?

5.HowlongdoesittakeClark'sstudentstopracticetherules?

Unit2NoRulesNoOrder

重点语法精讲精练(讲义)

一、祈使句

一、语法概述

祈使句表达请求、命令、警告、劝告、禁止等含义。一般以动词原形开头,常省略主语“you”,句末用感

叹号或句号,读时常用降调。

Goandwashyourhands.去洗手。(命令)

Bequiet,please.请安静。(请求)

Bekindtoyoursisters.对姐妹要和善。(劝告)

Watchyoursteps.走路小心。(警告)

Lookout!Danger!小心!危险!(强烈警告)

Keepoffthegrass.勿践踏草坪。(禁止)

Openthedoor,please.请把门打开。

Don'tforgettotakeyourmedicine,Alice.爱丽丝,不要忘记吃药。

二、祈使句的类型

l.Do型

肯定形式:实义动词原形+其他。例如:Openthedoor!(打开门!)

否定形式:Don*t+实义动词原形+其他。例如:Don'tforgettoturnoffthelights.(别忘了关灯。)

Listentomecarefully,please.请仔细听我讲。

Don'tdoitlikethat!不要那样做!

Mary,don'tbelateforclassagain.玛丽,上课不要再迟到了。(容易错用doesn't)

【即学即练】

1.-yourhomeworkheretomorrow,Lucy.

—Allright,MsLi.

A.BringB.BringsC.TobringD.Bringing

【答案】A

【详解】句意:——露西,明天把你的作业带来。——好的,李老师。

考查祈使句。根据“…yourhomeworkheretomorrow,Lucy.”是祈使句可知,动词要用原形。故选A。

2.Be型

肯定形式:Be+形容词。例如:Becareful!(小心!)

否定形式:Don*t+e+形容词。例如:Dontbelazy.(别偷懒。)

Bequiet,boysandgirls!大家安静!

【即学即练】

1.quiet,please.Youareinthelibrary.

A.KeepB.TokeepC.KeepingD.Keeps

【答案】A

【详解】句意:请保持安静。你在图书馆。

考查祈使句。根据“Youareinthelibrary.”可知,在图书馆要保持安静,此处是祈使句的肯定形式,动词用

原形。故选A。

3.Let型

肯定形式:Let+宾语+动词原形+其他。例如:Let*splayfootball.(咱们踢足球吧。)

否定形式:

Don't+let+宾语+动词原形+其他。例如:Don'tletthedoginthehouse.(别让狗进屋子。)

Let+宾语+not+动词原形+其他。例如:Lethimnotgooutalone.(别让他一个人出去。)

Letthemnotgooutforawalk.ltisraining.让他们别出去散步了。下雨了。

【即学即练】

1.(24-25七年级上•广东珠海•阶段练习)Lefsthereturn(回归)ofthepandaFuBao.

A.welcomeB.towelcomeC.welcomesD.welcoming

【答案】A

【详解】句意:让我们欢迎熊猫福宝的归来。

考查祈使句。letsbdosth“让某人做某事”,此空应填动词原形,故选A。

4.No型

结构:No+名词/动词-ingo例如:Noparking.(禁止停车。);Nolittering.(禁止乱扔垃圾。)

Nophotos.不许拍照。

Noparking!禁止停车!

Noparkinghere.此处不准停车。

5.其他

形式:直接用名词、副词或“名词+副词”等。例如:Attention!(注意!);Forward!(向前!);Handsdown!

(把手放下!)

三、难点突破

祈使句与复合句的转换

if引导的条件状语从句可以转换成“祈使句+and/or+简单句”结构。

Ifyoudon'thurry,you'llnotcatchtheearlybus.

=Hurryup,oryou'llnotcatchtheearlybus.如果你不快点,就赶不上早班公交车了。

Ifyouworkharder,you'llcatchupwithyourclassmates.

=Workharder,andyou'llcatchupwithyourclassmates.如果你再努力些,你就会赶上你的同学。

拓展

L强调:有时为强调,可在句首加“Do”或将祈使句的主语表示出来。例如:Docomein.(务必进来。);

Youcleantheclassroom.(你打扫教室。)

2.委婉客气:为使祈使句语气委婉、客气,可在句首或句末加“please",当"please”用在句末时,常用逗

号与其余部分隔开。例如:Pleasepassmethebook.(请递给我那本书。);Comein,please.(请进。)

巧学妙记

祈使句表命令,还表请求或建议。

动词原形放句首,主语是you常省去。

Don't置前表否定,let否定有两种。

想要客气please,Do置开头强语气。

祈使句的回答

1.由于祈使句所表达的动作是还未发生的,因此对它的应答通常要用“一般将来时“回答时一般用“will”或

“won't"。回答肯定形式的祈使句用“will",回答否定形式的祈使句用-won'f'o

—Pleaseturnoffthelightwhenyougoout.当你出去的时候请关上灯。

—OK,Iwill.好的,我会的。

Don'tbelateanymore.不要再迟到了。

Sorry,!wont.对不起,我不会再迟到了。

2.以let开头的句式的肯定回答多用“Goodidea.",否定用“Sorry,...”

一Let'schatontheInternet.我们上网聊天吧。

一Goodidea.好主意。

【即学即练】

一、用所给词的正确的形式填空。

6.(noteat)inclass.

7.Wemust(be)carefulwhenwecrossthestreet.

8.It'simportantforus(learn)Englishcarefully.

9.No(swim)intheriver.

10.(listen)totheteachercarefully.

【答案】

1.Don'teat(noteat)inclass.

2.Wemustbe(be)carefulwhenwecrossthestreet.

3.Ifsimportantforustolearn(learn)Englishcarefully.

4.Noswimming(swim)intheriver.

5.Listen(listen)totheteachercarefully.

二、单项选择。

1.It'ssnowing.Pleasewarmclothes.

A.wearB.wearsC.wearingD.towear

【答案】A

【详解】句意:正在下雪,请穿上暖和的衣服。

考查祈使句。分析句子可知,本句是祈使句,以动词原形开头。故选A。

2.Bill,talkinclass.Wemustlistentheteacher.

A.doesn't;withB.doesn't;toC.don't;withD.don't;to

【答案】D

【详解】句意:比尔,不要在课堂上说话。我们必须听老师讲课。

考查祈使句和介词。第一空结合句意可知,此处是对比尔的建议,属于祈使句,否定祈使句以don't开头,

意为“不要”;第二空,listento"听……”,固定搭配。故选D。

3.meapostcardwhenyougettoAustralia.Don'tforgetit!

A.TosendB.Sends

C.SendingD.Send

【答案】D

【详解】句意:你到澳大利亚后给我寄张明信片。别忘了!

考查祈使句。句子是祈使句,应用动词原形开头,故选D。

4.Jim,readinthesun.Ifsbadforyoureyes.

A.can'tB.isn'tC.doesn'tD.don't

【答案】D

【详解】句意:吉姆,不要在阳光下看书。这对你的眼睛不好。

考查祈使句的否定形式。根据“…readinthesun”可知,此句为祈使句;由“Ifsbadfbryoureyes.“可知,对

眼睛不好,因此可以判断句子应是祈使句的否定形式,表示不要在阳光下看书,因此在

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