book+7_u3_课件课时5grammar+and+usage

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1、牛津高中英语(模块七·高二下学期)AdvancewithEnglish板块：教学设计—课件Unit3GrammarandusageAuxiliaryverbUnit3课件描述：学生将学会：1）什么是助动词（用于协助主要动词构成谓语动词词组的词，自身没有词义，不可单独使用）。2）助动词的功能（a.表示时态；b.表示语态；c.构成疑问句；d.与否定副词not合用，构成否定句；e.加强语气）。3）最常用的助动词（be,do,haveandmodals(shall,will,should,would)）。Auxiliaryverbsareu

2、sedinformingtenses,moodsandvoicesofotherverbs.Theverbsusedforthispurposeincludebe,do,haveandmodals.Whatareauxiliaryverbs?1.HelikeEnglish.2.Hesinging.3.Hemarried.4.HesenttoEngland.5.youlikecollegelife?6.youstudyEnglishlastyear?7.cometothepartytomorrowevening.8.Heknowtha

3、t.doesn’tAuxiliaryverbsishasgotwasDoDidDodidbe（am/is/are/was/were/been）do（does/did）have（has/had）modals（shall/should/will/would/can/could/may/might/must/need/dare）Aphrasalauxiliaryverb（have(got)to,hadbetter/wouldsooner/rather(…than)/cannot(help)but/be(not)to/besupposedt

4、o/oughtto/usedto/beaboutto/beableto）AuxiliaryverbsAuxiliaryverbsThesmallanimalsarekeptinthecages.Heisgivingalecture.TheInternethastoomuchinformationthathasnotbeenevaluatedforaccuracy.Yourhouseisbiggerandnicerthanmine.Iamtogoabroadonbusinesstomorrow.1.be（am/is/are/was/w

5、ere/been）AuxiliaryverbsTip:be作为本动词表示状态或客观存在等意思。be+不定词连用,表示约定、义务、命令等未来的动作或状态。be+现在分词构成各种进行时态。be+过去分词构成被动语态。be用于have/has/had后构成完成时。1.be（am/is/are/was/were/been）AuxiliaryverbsHedidn’tfindanyusefulinformationontheInternet.Thesekindsoferrorsdonotoccurasoftenwhenpeopleusetra

6、ditionalreferencematerials.Then,whydoeshecomehere?Youdoknowalotaboutcomputers.NeverdidIseesuchastrangeman.2.do（does/did）AuxiliaryverbsTip:do作为助动词时的时态、人称和数的变化有do,does,did三种形式。do+主词+原形动词构成疑问句。do+not+原形动词构成否定句。do(+not)+主词用于附带问句。do+原形动词用于加强语气句。Never(Only)等+do+主词+原形动词用于倒装句。

7、2.do（does/did）AuxiliaryverbsIhaveneverseensuchastrangeman.CanIhavemyhaircutnow?Ioftenhavemyassistanthelpmedoit.3.have（has/had）Tip:助动词have+过去分词构成完成时态。have+受词+过去分词表示请或让别人做某事。have+受词+原形不定词表示请或让某人做某事。4.modals（shall/should/will/would/can/could/may/might/must/need/dare）Auxil

8、iaryverbsOk,Ishalldowhatyousaid.Ishallneverdosuchathing.Youshallgivemeacigarette,orIshalltelltheboss.WhereshallImeety