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《高一英語（下）必修三Unit 2 Learning about language.ppt》由會員上傳分享，免費在線閱讀，更多相關內容在教育資源-天天文庫。
1、LearningaboutlanguageAnswerkeysforEx.1onPage11:VerbAdjectiveNounweakenstrengthenbeautifydigestivebalanceamazementstrongamazingweaknessbeautifulweakstrengthbeautybalancedigestdigestionbalancedamazeAnswerkeysforEx.2onPage12:AlternativewordsandexpressionsWord
2、sandexpressionsfromthetextshouldrunawayafter…somethingtomake…wishtoknow…getridofsomethingpartsofplants…changingfoodinto…properamountof…oughttogetawaywithslimmingfoodscuriositythrowawayfibredigestionbalanceddietAnswerkeysforEx.3onPage12:slim2.research3.weak
3、ensses4.cucumber5.mushrooms6.body-building7.rawModalVerb(2)Grammaroughttooughtto用于表示"想必會"(語氣較must弱)：他們想必已到那兒了。Theyoughttobetherebynow.2.他最好不要抽煙了。Heoughttostopsmoking.多數情況下，oughtto可與should互換使用。Oughtto的反意疑問句用shouldn’t替代。13.YououghttohavehelpedhimwithhisEngli
4、sh,________you?A.won’tyouB.oughtnotyouC.shouldn’tyouD.wouldn’tyou比較hadbetter,should&oughtto三者均表示建議，意為“應該”，“應當”或“最好做…”.三者的語氣程度為漸強。Hadbetter指一般性的建議，最弱。Should&oughtto含義相近，?？苫Q。區(qū)別在于，oughtto常指特殊情況下的“應當”。Should則指一般情況。見下頁例句。Yououghttohelphimbecauseheisintroubleno
5、w.(語氣強，有命令意味。)Youshouldhavearestafterfinishingyoursports.（一般性建議）Yououghttocallthepolicewhenyoufindsomethingwronginyourhouse.Heshouldtakecareofthebabiestonight.havetohaveto表示客觀需要去做的事情，意為“必須，不得不?！盜havetogetthestationearlytocatchthefirsttrain.Wemissedthebusso
6、wehadtowalkhome.Wehavetoovercomeallkindsofdifficulties.Haveto有多種時態(tài)。常見的有：一般將來時，Wewillhavetogatherattheschoolgateat7tomorrow.一般現在時Ihavetotakemoremoneywithmebecausemygfhassomuchtobuy.一般過去時Finally,wehadtogiveupourideatoholdapicnicoutsideasitrainedforawholeafte
7、rnoon.haveto（考點）shall用于第一，三人稱疑問句，征求意見或請求shall第二，三人稱陳述句,命令,警告,允諾,威脅should表勸告，建議，命令，順理成章的＝oughtto疑問句中常用should代替oughttooughtto表應該，語氣＞should美語中，oughtto用于否，疑句時to可省shall,should&oughttoNeedIdo…?Yes,youmust.No,youneedn’t.dare&need情態(tài)動詞實義動詞dare否，疑，條darenotdo否,疑don’t
8、daretododon’tdaredo不用于肯定句肯：daretodoneed否，疑needn’tdo(don’t)needsth(don’t)needtodo肯：must,haveto,oughtto,shouldMusttheydo…?Yes,theymust.No,theyneedn’t/don’thaveto.must&havetomusthaveto主觀／客觀主觀客觀時態(tài)現在，將來多種表推測√×詢問意愿
