Unit+1+Food+for+thought+Using+language+學(xué)案 高中英語外研版（2019）必修第二冊(cè)

B2U1Usinglanguage—Modals(1)語法感知：1．...Iwasabletoholdaknifeandfork—andchopsticks!2．ButtherearestillsomedishesthatDaddarenottryevenaftermanyyearsofmarriagetomymother.3．...MumandIjusthavetofindawaytogethimintothekitchen!4．...we'dbetternoteattoomuchroastfoodasitmaymakeussufferfromheatinsideourbodies...5．“Youneedn'ttryitifyoudon'twantto，”Mumsaid...Summary:1．情態(tài)動(dòng)詞有____________，但不能______________，需和_________________一起作謂語。2.情態(tài)動(dòng)詞的否定式：________________________，如：句2,4,5。3.情態(tài)動(dòng)詞后接___________________。4.情態(tài)動(dòng)詞一般無_______和______的變化，個(gè)別情態(tài)動(dòng)詞有現(xiàn)在時(shí)和過去時(shí)兩種時(shí)態(tài)變化。有些情態(tài)動(dòng)詞如beableto，haveto有和的變化，如句1,3。1．can與beableto(1)can只有現(xiàn)在時(shí)和過去時(shí)(could)兩種時(shí)態(tài):can-couldbeableto則有更多的時(shí)態(tài)變化，在非謂語動(dòng)詞中只能用beableto。Willyoubeabletocometomypartytomorrow?Beingabletocommunicateideasinameaningfulwayisavaluableskill.(2)can一般指自身具有的能力，beableto則表經(jīng)過一段時(shí)間的努力后所具有的能力(相當(dāng)于managetodo或succeedindoing)Thegirlcan'tanswerthequestion.Ifyoukeeppracticing，youwillbeabletoplaybasketballwell.(3)在否定結(jié)構(gòu)中was/wereableto與could沒有區(qū)別Sheranfastbutshewasn'tableto/couldn'tcatchthebus.2．need的用法(1)need作情態(tài)動(dòng)詞時(shí)，后跟動(dòng)詞原形，表“需要，有必要”，無人稱和數(shù)的變化，多用于疑問句、否定句或條件句中。—NeedIfinishtheworktoday?—Yes，youmust/haveto./No，youneedn't.There'splentyoftime.Youneedn'tdrivesofast.注：由need引起的一般疑問句，肯定回答常用must或haveto；否定回答常用needn't。(2)need作實(shí)義動(dòng)詞時(shí)，后可接名詞、動(dòng)名詞、不定式等，有人稱、時(shí)態(tài)和數(shù)的變化。短語：sbneedtodosth.Sthneeddoing=sthneedtobedoneYouneed__________________(practice)speakingEnglishmoreoften.Mywatchdoesn'tworkandneeds________________________________(repair).3．haveto與must(1)haveto表“不得不”，有時(shí)態(tài)、人稱和數(shù)的變化，其否定式為don't/doesn't/didn'thaveto。It'stoolate.Ihavetogohomenow.Youdon'thavetofinishtheworknow.(2)haveto表一種客觀的需要，而must表一種主觀的需要。Ihavetoattendanimportantmeetingthisafternoon.Youmustobeytherulesofyourschool.(3)must表“偏偏，偏要，非得”，常指不愉快的事。Mustyoumakesomuchnoise?4．dare的用法(1)dare作情態(tài)動(dòng)詞時(shí)，多用于疑問句、否定句、條件狀語從句以及表懷疑的名詞性從句中，表“敢……”。Idarenotwalkthroughthewoodatnight.—Dareyoucatchthemouse?—No，Idaren't.Idon'tknowwhetherhedaretryit.(2)dare作實(shí)義動(dòng)詞時(shí)，在否定句、疑問句中，不定式符號(hào)to也可以省略。Thechildrendon'tdare(to)makeasoundwhiletheirparentsaresleeping.Doeshedare(to)tellyouwhathehasdone?5．hadbetter的用法hadbetter后跟動(dòng)詞原形，表示“最好……”，其否定式是在hadbetter后加not。You'dbettergettherebeforeitgetsdark.We'dbetternottalksoloudly.Practice——語段選詞填空：eq\x(may，dare，could，mustn't，beableto，must，hadto，hadbetter，should，needn't)I1._____________notreadwithmyeyespainful.MyroommatesuggestedIshouldhaveaneyeexamination.“You2._____________gotothehospitalandthedoctor3._____________helpyoufindoutwhy，”hesaid.WhenIarrivedatthehospital，Ifoundmanypeoplewaitingthere.SoI4._____________waitformyturn.Whenitwasmyturn，thedoctorexaminedmyeyescarefullyandsaid，“I5._____________sayyoudon'tprotectyoureyeswell.Butyou6._____________worryaboutit.Usesomemedicineandyou7._____________mustn'tmakeyoureyessotired，andsoonyouwill8._____________recover.”Isaidtomyself，“I9.______