Unit1FoodforThoughtGrammarModals课件高一英语

Lead-inIwasableto

holdaknifeandfork—andchopsticks!ButtherearestillsomedishesthatDaddarenot

tryevenaftermanyyearsofmarriagetomymother.MumandIjusthaveto

findawaytogethimintothekitchen.Wehadbetternoteattoomuchroastfoodasitmaymakeussufferfromheatinsideourbodies.“Youneedn’ttryitifyoudon’twantto,”Mumsaid.a.beabletob.darenotc.havetod.hadbettere.needn’t1.beafraid害怕todosomething2.notbenecessarytodosomething3.giveadvicetodoornottodosomething4.benecessary必要的orgivestrongadvicetodosomething5.havetheability能力todosomethingMatchthemeaningstothephrases.ModalsGrammar：Modals

UNIT1FoodforThought

情态动词(Modals)表示说话人的某种语气或者情绪，如：可能，意愿，猜测，义务，需要等。情态动词本身具有一定的词义。常见的情态动词包括can(could),may(might),will(would),shall(should),oughtto,hadbetter,must,haveto，need,dare,usedto等。本单元主要讲情态动词：beableto,dare,haveto,hadbetter,need.1.

基本特征：(1)情态动词不能单独做谓语，后面接动词原形；(2)情态动词没有人称和数的变化（beableto，haveto除外）2.基本用法：beabletodare＆needhavetohadbetterbeabletodosth.=havetheabilitytodosth.1.beableto

后接动词原形，表示某人能够做某事，有时态和数的变化。2.beableto

用于过去时态时，表示“某人过去或当时成功地做了某事”=managedtodosth/succeededindoing。IfIworkharder,Iwillbeabletomakegreaterprogress.Therewasabigfireyesterday.Luckily,everyonewasabletoescapefromthefire.darenotdosth.不敢做某事=beafraidtodosth.

1.dare

作情态动词时，没有时态和数的变化，否定式是darenot，主要用于否定句和疑问句中。2.dare

用作实义动词时，后接todo，有时态和数的变化。用在肯定句中。Shedarenotgooutaloneatnight.Shedarestogooutaloneatnight.needn’tdosth.不必做某事=notbenecessarytodosomething

1.need

作情态动词时，没有时态和数的变化，用于否定句needn’t或疑问句中。

2.need作实义动词，有时态和数的变化；后接todo，常用于肯定句Heneedstoearnmoremoneytosupportsuchalargefamily.

1.haveto有时态和数的变化，强调客观需要，意为“不得不”否定形式是don’thaveto，相当于needn’t不必。2.must无时态和数的变化，强调主观意愿，意为“必须”。haveto不得不=benecessaryorgivestrongadvicetodosth.Therewerenobuses;wehadtowalkallthewayhome.ImuststudyhardformyfuturebecauseknowledgeismoneyYoudon’thaveto/needn’tbringagiftifyoudon’twantto.hadbetter

后接动词原形，意为“最好....”，

无有时态和数的变化。否定式hadbetternotdo，构成疑问句时将had置于主语前。hadbetternotdosth最好别做某事。hadbetter最好=giveadvicetodoornottodosth.Whathadwebetterdo?我们最好怎么办？ShehadbetterapologizetoTomforherhadbehaviour.Let’spractice!Ifyou1________(dare)trya‘painful’diettostayhealthy,thisnewappistheperfectsolution—andyou2_______(need)payforit!Theappworksbyquicklyshowingphotosofdifferentfood.Allyou3______(has)todoisselectthephotosofhealthyfood.Thenyou4_____________(beableto)trainyourbraintoselecthealthyfoodinrealsituations.So,ifyou’reasugaraddictand5_________(able)tosaynotochocolateorcola,you6_____(have)betterdownloaditnow!daren’tneedn’thavewillbeabletoaren’tablehadCompletethepassagewithcorrectformsCompletethetipsforgoodtablemannerswiththecorrectformofthemodalsinActvity1.

(P7-3)WhilegoingonyourfirsttriptotheUKisexciting,newanddifferentcustomscanalsobeconfusing.Tablemannersarenoexception.Butdon'tworry-herearesome

tips:havetodarenothadbetterneedn’tbeableto完成句子1.Iwill_________________________inthreeyears.三年后我将能讲英语。2.I'mafraidyou___________________suchathing.恐怕你不敢做这样的事。3.DoI______________mytelephonenumberandaddress?我有必要把电话和地址留下吗？4.Givenhishealthcondition，we_____________________________