Unit7SectionAGrammarfocus-4c課件人教版九年級英語全冊

Unit7Teenagersshouldbeallowedtochoosetheirownclothes.SectionA(GrammarFocus~4c)FreetalkWhatcanyoudoatschool?Whatcan’tyoudoatschool?Doyouagreeordisagree?社區(qū)；社團避免接近；遠離機會；可能性自己做決定教育；教導完成（困難的事）；應付（困難局面）社會Lookattheserules,use“Ithink…”,“Idon’tthink…”,“Iagree/disagree”and“should/shouldn’tbeallowedto”toexpressyourownideas.RulesforTeenagers1.Don’tsmoke!2.Don’tdrive!3.Getearspierced!4.Haveapart-timejob!Idon’tthinksixteen-year-oldsshouldbeallowedtodrive.Iagree.Theyaren’tseriousenough.Doyouthinkteenagersshouldbeencouragedtomaketheirowndecisions?No,Idon’tagreewiththis.Teenagersaretooyoungtomaketheirowndecisions.Teenagersshouldnotbeallowedtohavepart-timejobs.Idisagree.Theycanlearnalotfromworking.Doyouthinkwemaybeallowedtotakesomephotosifwedon’tuseaflash?Ifyoudon’tuseaflash,thenitmaybeOK.ReadthefollowingsentencesandfindoutthePassiveVoice.GrammarFocus情態(tài)動詞can/couldmay/mightwill/wouldshall/shouldmustoughtto1.情態(tài)動詞無時態(tài)和人稱的變化；2.情態(tài)動詞后加動詞原形Doyouthinkteenagersshouldbeencouragedtomaketheirowndecisions?No,Idon’tagreewiththis.Teenagersaretooyoungtomaketheirowndecisions.Readandobservethecoloredwordsandsentences.Teenagersshouldnotbeallowedtohavepart-timejobs.Doyouthinkwemaybeallowedtotakephotosifwedon’tuseaflash?Idisagree.Theycanlearnalotfromworking.Ifyoudon’tuseaflash,thenitmaybeOK.Idon’tthinksixteen-year-oldsshouldbeallowedtodrive.Iagree.Theyaren’tseriousenough.usedtoexpressouropinions帶有情態(tài)動詞的被動語態(tài)結(jié)構(gòu)：情態(tài)動詞+be+V-ed情態(tài)動詞canmaymustshould可以也許必須應該含有情態(tài)動詞被動語態(tài)的結(jié)構(gòu)情態(tài)動詞+be+過去分詞Hecleanshisbedroomeveryday.Hisbedroomiscleanedbyhimeveryday.動作執(zhí)行者謂語動詞動作承受者其他成分其他成分動作執(zhí)行者動作承受者謂語動詞主動語態(tài)被動語態(tài)主動語態(tài)轉(zhuǎn)換為被動語態(tài)1.

將含有情態(tài)動詞的主動語態(tài)變?yōu)楸粍诱Z態(tài)的方法：1)

將主動語態(tài)的賓語變成被動語態(tài)的主語；2)

將“情態(tài)動詞

+

動詞原形”變成“情態(tài)動詞

+be+

及物動詞的過去分詞”。2.

含有情態(tài)動詞的被動語態(tài)的句式結(jié)構(gòu)：1)

肯定式：主語

+

情態(tài)動詞

+be+

及物動詞的過去分詞

+

其他

2)

否定式：主語

+

情態(tài)動詞

+not+be+

及物動詞的過去分詞

+

其他3)

疑問式：情態(tài)動詞

+

主語

+be+

及物動詞的過去分詞

+

其他？主語+情態(tài)動詞+not+be+done+其他內(nèi)容.易錯點一：表達否定時，“not”接在情態(tài)動詞后。Paperandwater

wastedbypeople.A.willbenotB.willnotbeC.shouldbenotD.shouldnotbe2.In2050,2G

usedintheworld.A.willbenotB.willnotbeC.shouldbenotD.shouldnotbe易錯點二：情態(tài)動詞+

主語+be+done+其他內(nèi)容?疑問句中，情態(tài)動詞后緊跟主語。判斷下列句子是否正確？正確（T）錯誤（F）Shouldclassroombecleanedbystudents?Mustbemyroomcleanedbymyselfnow?Shouldbefoodwastedbypeople?Canthehomeworkbefinishedtomorrow?Canbemoonseenatnight?TFFTF妙指津含有情態(tài)動詞的主動句變被動句時，謂語動詞部分改為“情態(tài)動詞+be+及物動詞的過去分詞”。e.g.WecanwritelettersinEnglish.改為被動語態(tài)LetterscanbewritteninEnglishbyus.—Thetrafficistoobusy.Wehavetodriveslowly.—Ithinkmorenewroads________inourcity.A．shouldbebuiltB．shouldbuilt

C．havebuilt

D．build可用語法判斷法解答本題。主語roads與動詞build構(gòu)成被動關系，所以應用被動語態(tài)。從句為含有情態(tài)動詞的被動語態(tài)。故選A項。

典例點撥含有情態(tài)動詞的被動語態(tài)A1．DoyouthinkwemustkeepteenagersawayfromtheInternet?

你認為我們必須讓青少年遠離網(wǎng)絡嗎？keep...awayfrom意為“避免接近；使……

遠離”

。e.g.Weadviseparentsnottoleavetheirchildrenathomealoneinordertokeep

themawayfromdanger.為了讓孩子們遠離危險，我們建議父母不要把他們獨自留在家。拓展keepawayfrom意為“不接近；遠離”

。e.g.Junkfoodtastesdelicious,butitisn’thealthy.Soweshouldkeepawayfromit.垃圾食品吃起來可口，但不健康。所以我們應該遠離它。2．

Parentsshouldgiveteenagerschancestomaketheirowndecisions.父母應該給青少年自己做決定的機會。(1)chance（asuitabletimeorsituationwhenyouhavetheopportunitytodosth.）可數(shù)名詞，意為“機會；機遇”，其后可接todosth.或of（doing）sth.。若表示“做某事對某人來說是一次機會”，其后可接forsb.todosth.。e.g.Inevermissachancetoplayfootball.我從不錯過踢足球的機會。Wouldthisbeachanceformetoachievemylifelongdream?這會是成為我實現(xiàn)一生夢想的機會嗎？(2)makeone’sowndecision意為“自己做決定”，相當于makeadecisionforoneself。e.g.Ijustwanttobeabletomakemyowndecision.我只想能夠自己做決定。1.Youmustcleanyourbedroomeveryday.

Yourbedroom

mustbecleanedeveryday.2.Iwilldo

thehouseworkintheafternoon.

Thehouseworkwillbedoneintheafternoon.4a.Rewritethesentencesaccordingtotheexample.YourbedroomwillbeencouragedLucy’shomeworkbedonebyhertomorrowinsteadawayfromtheInternetmustbekeptchancestomaketheirowndecisionsshouldbegiven社區(qū)保持

keep-kept-kept給

give-gave-givenFillintheblankswiththecorrectformsofthewordsinbrackets.Shouldteenagers__________(ask)tomoveoutwhentheystartworking?InmanyWesterncountries,teenagers_____________(allow)tomoveoutateighteen.Theirparentsbelievethattheyshouldbeeducatedtotakecareofthemselvesfromayoungage.Thisway,whenthey_________(start)workingtheycanmanagetheirownlives.

beasked

areallowed

start

continue

move

takev.完成（困難的事）；應付（困難局面）4bYouandyourfriendarestartinganEnglishclub.Makealistofrulesaboutwhatshouldandshouldnotbeallowed.A:Membersshouldbeallowedtousedictionaries.B:Yes,buttheyshouldonlyuseEnglish-Englishdictionaries.英語中表示同意和不同意的表達Sure.Certainly.Ofcourse.Allright.Iagree(withyou).Noproblem.Youareright.That’sagoodidea.Yes,Ithinkso.Ofcoursenot.Idon’tagree(withyou).Idisagree(withyou).Idon’tthink…I’mafraidnot.Noway!Exercise1.Theyoungtreesmustbeplantednow.(改成否定句)Theyoungtrees__________________now.2.Nobodycananswerthequestion.(改成同義句)Thequestion___________________byanybody.3.Weshouldcleanourclassroomeveryday.(改成被動語態(tài))Ourclassroomshould___________everyday4.Canthekids_______afterwellbythenurse?(同上）

mustn’tbeplantedcan’tbeansweredbe

cleanedbelookedCanthenurseslookafter

thekidswell?

一.單選C

1.Weshouldmanage___________ourhouse.A.do B.did C.todo D.doing2.Duringthewintervacation,hewasn’tallowed__________TVeveryday.A.watching B.towatch C.watches D.watch3.Teenagersare_________young_________maketheirowndecisions.A.so;that B.too;to C.such;thatD.so;toB

B

二.

用所給詞的