Unit4AgoodreadGrammar课件译林版英语八年级下册

Unit4AgoodreadGrammarTeachingaims1.能熟悉并正确运用本课时的重点单词和短语。2.能掌握“疑问词+动词不定式”的用法。3.能掌握must和haveto的用法。Lookandsay1/19/20261.Milliehasdecidedwhattoread.2.Danieldidnotsaywhototalktoaboutthisbook.3.Simonforgotwhentoreturnhislibrarybooks.“疑问词+动词不定式”的用法Wecanuseaquestionwordwithato-infinitiveafteraverb.我们可以在动词后面加上“疑问词+动词不定式”。Milliehasdecided

whattoread.Danieldidnotsay

whototalkto

aboutthisbook.（1）:V.

+wh-

+todo在动词后做宾语，表示动作的“内容”Allquestionwordscanbeusedinthisway,exceptwhy.所有疑问词都可以这样使用，除了why。Wecanuseaverb+objectbeforeaquestionwordwithato-infinitive.我们可以用"疑问词+动词不定式"结构作动词的宾语。疑问词包括疑问代词who,what,which及疑问副词when,how,where等。常和"疑问词+动词不定式"结构连用的动词和动词短语有:tell,show,think,learn,know,wonder,decide,remember,forget,understand,see,hear,ask,advise(建议),explain(解释),findout(查明，发现)等。A1MrWuistalkingtohisstudentsabouttheReadingMonth,Completewhathesayswiththecorrectquestionwords.So,todayyou'vealldecidedwhattoreadfortheReadingMonth.Itisn'talwayseasytoknow(1)_______booktochoose,butI'mhappywithyourchoices.It'shelpfultohaveaplanbeforeyoustartreading.Then,you'llknow(2)_______pagestoreadeachday.Youcantalktoyourclassmatesifyou'renotsure(3)_______towriteaboutyourbook.Ifyouhaveanyproblems,I'mreadytohelp.Forexample,youcanaskme(4)_______towritethebookreview.I'llputupatimetableonmyofficedoorsoyouknow(5)________tospeaktome.whichwhichwhathowwhenFreeTalk1.Whatdoyouknowabout“must”,“mustn't”,“haveto”and“don'thaveto”?2.Canyouknowtheirsimilaritiesanddifferences(相同点和不同点)?must和have

to的用法

（1）must是情态动词，意为“必须”，侧重于说话者的主观看法，认为有必要去做某事。must没有人称、时态和数的变化。must的否定式mustn’t意为“不准，禁止”。例如：

You

must

go

to

the

hospital

today.

今天你必须去医院。

Look

at

the

sign.

You

mustn’t

smoke

here.

看这个标志，这里禁止吸烟。

（2）have

to意为“必须，不得不”，后接动词原形，表示客观上的必须。have

to的否定式don’t

have

to意为“不必，不需要”，相当于needn’t。例如：

The

last

bus

has

gone.

We’ll

have

to

walk

home.

最后一班车已经开走了。我们不得不走路回家。

We

don’t

have

to

get

up

early

tomorrow

morning.

明天早上我们不必早起。

【拓展】回答以must引导的一般疑问句时，若是否定答复，不可以用mustn’t，而需要用needn’t或don’t

have

to。例如：

—Must

I

water

the

flowers?

我今天必须给花儿浇水吗？

—Yes,

you

must./

No,

you

needn’t.

是的，你必须。/不，你不必。Tip:Havetohasdifferentforms.hastohadtowillhavetohave/hasgottoTip:mustnot=mustn'tdonothaveto=don'thavetoB1Millieiswatchingavideoaboutschoollibraryrulesontheschoolwebsite.Readthescriptandcompleteitwithmust(not)and(donot)haveto.WelcometotheSunshineMiddleSchoollibrary!I'mMrsLiandI'lltellyouafewlibraryrules.You(1)________followtheseruleswhileyou'rehere.Firstofall,you(2)_________rememberthatbooksinthelibraryareforeveryone,sopleasemakesureyoutakecareofthem.You(3)________writeinthebooksortakeoutanypages.Thelibraryisaplaceforallstudentstoreadandstudy.You(4)________beveryquietwhenyou'reinthelibrary,sootherstudentscanfocus.Youalso(5)_______bringanyfoodordrinksintothelibrary.You(6)________stayinthelibrarytoenjoythebookshere.Ifyouwanttotakeabookhome,youcanjusttakeittothelibrariantocheckitout.Thankyouforwatching.Ihopeyouenjoyusingthelibrary.mustmustmustn’tmustmustn’thaveto“疑问词+动词不定式”的用法：

我们可以用“疑问词+动词不定式”结构做动词的_____，疑问词不包括____；该结构前除了动词还可以是___________和_______。must/haveto的用法：must表示______的义务和必要，其否定形式是________；haveto表示_______的需要，其否定形式是___________。Unit4Grammar宾语why动词+宾语形容词主观mustnot客观donothaveto1.Haveyoudecided_________________yourholiday(怎样度过)?2.Idon'tknow_________________atthemeeting(说什么).3.Canyoutellme__________________thisbook(在哪里能买)?4.Drivers_______(必须)wearseatbeltswhiletheircarsarerunningontheroad.5.—_____