Unit4hands-onfunGrammar1.Standup.2.Sitdown.3.Putupyourhands.4.Touchyournose.Isay,youdo.GrammarAImperativesentences什么是祈使句？

表示請(qǐng)求、命令、勸說(shuō)、警告等句子。主語(yǔ)往往被省略

，句末通常是"."或"!"

Turnleft.Noparking!Nosmoking!Nofishing!Don’tturnright!Don’tparkyourcar!生活中的指示Turnleft!Don’tpicktheflowers!Turnright!Don’tsmoke!Letmehelpyou.Don’tbelateagain!

Bequiet,please.Don’tparkyourcar!Pleasegoupstairs!Pleasedon’teat!Weusethesesentencestogiveordersorinstructions

.命令指示W(wǎng)hendoweusethesesentences?WhatareMillieandAndydoing?Theyareputtingtogetherashelf.建議請(qǐng)求命令(指示)我們用祈使句來(lái)表達(dá)建議、請(qǐng)求和命令。祈使句的結(jié)構(gòu)有哪些？Turnleft!Don’tpicktheflowers!Turnright!Don’tsmoke!Letmehelpyou.Don’tbelateagain!

Bequiet,please.Don’tparkyourcar!Pleasegoupstairs!Pleasedon’teat!祈使句的最常見(jiàn)結(jié)構(gòu)如下：

Do

sth.

Don’t

dosth.還有其他結(jié)構(gòu)嗎？類(lèi)型結(jié)構(gòu)例句Do型

Be型Let型肯定結(jié)構(gòu)V原Standup!Be+adj./n.Bequiet,please.Tom,beagoodboy!Letsb.dosth.Let’sgo!Letmehelpyou.morepolitesuggestdoingsth.together類(lèi)型結(jié)構(gòu)例句Do型Be型Let型否定結(jié)構(gòu)Don’t+V原Don’t+be+adj./n.Don’tletsb.dosth.Letsb.notdosth.No+n./v-ing!Don’tstandup!Don’tbelate!Let’snotsayanythingaboutit.Don’tlethimgo.Nophotos!Nosmoking!No型don’tpleaselet’s我們用動(dòng)詞原形開(kāi)啟一個(gè)句子告訴人們做什么讓命令/指示

更禮貌建議一起做某事Millieisteachingherclassmateshowtomakeflashcards.CutWriteDrawLooktrydon’tgiveKeep__________outthecolouredpaper.

__________thescissorsready.

__________thepaperinhalf.

__________notfoldittooloosely.

__________thefoldedpaperintopetal(花瓣)shapes.

__________cuttowardsyourfingers!

__________thepetalswithtapeorglue.

__________putallpiecesonthetablefirst.A.Cut

B.Fold

C.Do

D.Don’t

E.Take

F.Get

G.Stick

H.Let’sTakeGetFoldDoCutDon’tStickLet’s祈使句的回答祈使句通常表示將來(lái)要發(fā)生的動(dòng)作，所以回答時(shí)，一般用will或won’t?！狣on’tforgettodoyourhomework.—Iwon’t.—Remembertoturnoffthelights.—Iwill.祈使句的反義疑問(wèn)句Let’s…,shallwe?Letus/sb.…,

willyou?肯定/否定祈使句(Do.../Don’t...),willyou?Let’sgo,Lettheboygofirst,Don’tsmokehere,shallwe?willyou?willyou?在公共場(chǎng)合的提示語(yǔ)中，常用的結(jié)構(gòu)“No＋名詞/v-ing”，表示“禁止做某事”Nosmoking!Nophotos!Noparking!Tip:1.Lucy

(do)herhomeworkbyherself.2.Lucy,

(do)yourhomeworkbyyourself.3.Lucy,_________(do)yourhomeworkbyyourselfisimportant.4.____________(pick)theapplesandeatthem.5.___________(pick)theapplesisgreatfun.6.____________(read)everydaymakesyousmart.7.____________(read)thebooksandanswerthequestions.doesdodoingPickPickingReadingRead區(qū)分祈使句和動(dòng)名詞作主語(yǔ)Whatothersentencescanweusetogiveadvice?GrammarBUsingshouldandhadbetterSuzyandhermumaretryingtopaintabirdhouse.shouldshouldn’thadbetterhadbetternotWhatwordscanweusewhengivingadvice?shouldhadbettershoulddosth.應(yīng)該做某事shouldnotdosth.不應(yīng)該做某事hadbetterdosth.最好做某事hadbetternotdosth.最好不要做某事should和hadbetter后都接動(dòng)詞原形沒(méi)有耐心的fYoushouldbuysometolearnmoreaboutit.bYoushould/hadbetterjoinaDIYclubtolearnmoreaboutit.aYouhadbetternotbeginyourworkwithoutreadingthem.gYouhadbetternotplaywiththemwhenyoudoDIYjobs.dYoushouldbepatient.eYouhadbetterbecarefulwhenyouuseit.cYoushouldreadthemslowlyandcarefully.n.用法說(shuō)明，操作指南耗費(fèi)時(shí)間傷害你的皮膚Practice根據(jù)上下文補(bǔ)全建議Ifyouwanttomakeaproperbookshelf,you______________________measure(測(cè)量)

thewoodcarefully.should/hadbetter2.Forasmoothpaintjob,youshould/hadbetter__________(clean)thefurniture(家具)

.clean3.Whenassembling(組裝)themodel,you_________________________followthesteps.should/hadbetter4.Beforefixingthetap,you______________________turnonthewater.shouldn’thadbetternotPractice根據(jù)上下文補(bǔ)全建議SummaryUsingimperativesentencesUsingshouldandhadbetterInstructionsAdvice1.Let’s_________anoise,someoneissleeping.A.notmakeB.nomakingC.nottomakeD.don’tmake2.________getoffthebusbeforeitstops.A.Don’t B.Doesn’tC.Didn’t D.Not3.________buyyourticketfromaticketmachine.Becausethere’remanypeoplethere.A.Not B.NottoC.Don’t D.Don’tto4.We___________thinkmoreofothersifwewanttogetonwellwiththem. A.shouldto B.hadbettertoC.should D.shouldn’t5.Amy,________tosmilewhenyouaredown,andyou’llsoonbehappyagain.A.Trying B.TotryC.Try D.TriedPractice

句子糾錯(cuò)Youshouldtostudyforthetest.→_________________________Hehadbetternottoplayfootballinthestreet.→______________Weshouldhelpingeachother.→___________________________Theyhadbetterstudyinghard.→__________________________Sheshouldnottoeattoomuchjunkfood.→_________________

去掉to去掉tohelping→helpstudying→study去掉toPractice1.Willyoupleasereaditagainmoreslowly?(改為祈使句)

_______againmoreslowly,p