Unit7Teenagersshouldbeallowedtochoosetheirownclothes.

(Period3)SectionA(GrammarFocus-4c)FreetalkWhatcanyoudoatschool?Whatcan’tyoudoatschool?Doyouagreeordisagree?社區(qū)；社團(tuán)避免接近；遠(yuǎn)離機(jī)會(huì)；可能性自己做決定教育；教導(dǎo)完成（困難的事）；應(yīng)付（困難局面）社會(huì)

GrammarFocus

Idon’tthinksixteen-year-oldsshouldbeallowedtodrive.Iagree.Theyaren’tseriousenough.Doyouthinkteenagersshouldbeencouragedtomaketheirowndecisions?No,Idon’tagreewiththis.Teenagersaretooyoungtomaketheirowndecisions.Teenagersshouldnotbeallowedtohavepart-timejobs.Idisagree.Theycanlearnalotfromworking.Doyouthinkwemaybeallowedtotakephotosifwedon’tuseaflash?Ifyoudon’tuseaflash,thenitmaybeOK.Lookatthesentences:

GrammarFocus

Readanddiscuss:Whatcanyoufind?Discussinyourgroup.Idon’tthinksixteen-year-oldsshouldbeallowedtodrive.Iagree.Theyaren’tseriousenough.Doyouthinkteenagersshouldbeencouragedtomaketheirowndecisions?No,Idon’tagreewiththis.Teenagersaretooyoungtomaketheirowndecisions.Teenagersshouldnotbeallowedtohavepart-timejobs.Idisagree.Theycanlearnalotfromworking.Doyouthinkwemaybeallowedtotakephotosifwedon’tuseaflash?Ifyoudon’tuseaflash,thenitmaybeOK.含有情態(tài)動(dòng)詞的被動(dòng)語態(tài)本單元重點(diǎn)學(xué)習(xí)了含有情態(tài)動(dòng)詞should的被動(dòng)語態(tài)。can、may、must等其他情態(tài)動(dòng)詞也可用于被動(dòng)語態(tài)。句式結(jié)構(gòu)肯定句否定句一般疑問句特殊疑問句其各種句式結(jié)構(gòu)如下：主語+情態(tài)動(dòng)詞+be+及物動(dòng)詞的過去分詞（+by...）.主語+情態(tài)動(dòng)詞+not+be+及物動(dòng)詞的過去分詞（+by...）.情態(tài)動(dòng)詞+主語+be+及物動(dòng)詞的過去分詞（+by...）?特殊疑問詞+被動(dòng)語態(tài)的一般疑問句？e.g.Teenagersshouldbeallowedtogoshopping.應(yīng)該允許青少年去購物。Thewordcan’tbeusedinthissentence.這個(gè)單詞不能用在這個(gè)句子中。

Musttheworkbefinishedtoday?今天必須完成這項(xiàng)工作嗎？

Whoshouldbeaskedtoanswerthequestion?應(yīng)該要求誰回答這個(gè)問題呢？妙指津含有情態(tài)動(dòng)詞的主動(dòng)句變被動(dòng)句時(shí)，謂語動(dòng)詞部分改為“情態(tài)動(dòng)詞+be+及物動(dòng)詞的過去分詞”。e.g.WecanwritelettersinEnglish.改為被動(dòng)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(dòng)詞build構(gòu)成被動(dòng)關(guān)系，所以應(yīng)用被動(dòng)語態(tài)。從句為含有情態(tài)動(dòng)詞的被動(dòng)語態(tài)。故選A項(xiàng)。

典例點(diǎn)撥含有情態(tài)動(dòng)詞的被動(dòng)語態(tài)A4aRewritethesentencesaccordingtotheexample.

mustbecleanedeverydaywillbedoneintheafternoon4aRewritethesentencesaccordingtotheexample.4．DoyouthinkwemustkeepteenagersawayfromtheInternet?Doyouthinkteenagers________________________________?5．Parentsshouldgiveteenagerschancestomaketheirowndecisions.Teenagers___________________________________________.mustbekeptawayfromtheInternetshouldbegivenchancestomaketheirowndecisionsShouldteenagers__________(ask)tomoveoutwhentheystartworking?InmanyWesterncountries,teenagers__________(allow)tomoveoutateighteen.Theirparentsbelievethattheyshouldbeeducatedtotakecareofthemselvesfromayoungage.Thisway,whenthey__________(start)workingtheycanmanagetheirownlives.4bFillintheblankswiththecorrectformsofthewordsinbrackets.beaskedareallowedstart4bFillintheblankswiththecorrectformsofthewordsinbrackets.movetakecontinue4cYouandyourfriendarestartinganEnglishclub.Makealistofrulesaboutwhatshouldandshouldnotbeallowed.A:Membersshouldbeallowedtousedictionaries.B:Yes,buttheyshouldonlyuseEnglish-Englishdictionaries.4cYouandyourfriendarestartinganEnglishclub.Makealistofrulesaboutwhatshouldandshouldnotbeallowed.ShouldbeallowedtoShouldnotbeallowedtoAttendEnglishcorneractivities4cYouandyourfriendarestartinganEnglishclub.Makealistofrulesaboutwhatshouldandshouldnotbeallowed.ShouldbeallowedtoShouldnotbeallowedtoActoutEnglishplays1．DoyouthinkwemustkeepteenagersawayfromtheInternet?

你認(rèn)為我們必須讓青少年遠(yuǎn)離網(wǎng)絡(luò)嗎？keep...awayfrom意為“避免接近；使……

遠(yuǎn)離”

。e.g.Weadviseparentsnottoleavetheirchildrenathomealoneinordertokeep

themawayfromdanger.為了讓孩子們遠(yuǎn)離危險(xiǎn)，我們建議父母不要把他們獨(dú)自留在家。拓展keepawayfrom意為“不接近；遠(yuǎn)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(yīng)該遠(yuǎn)離它。1．DoyouthinkwemustkeepteenagersawayfromtheInternet?

你認(rèn)為我們必須讓青少年遠(yuǎn)離網(wǎng)絡(luò)嗎？2．

Parentsshouldgiveteenagerschancestomaketheirowndecisions.

父母應(yīng)該給青少年自己做決定的機(jī)會(huì)。(1)chance（asuitabletimeorsituationwhenyouhavetheopportunitytodosth.）可數(shù)名詞，意為“機(jī)會(huì)；機(jī)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(jī)會(huì)”，其后可接forsb.todosth.。e.g.Inevermissachancetoplayfootball.我從不錯(cuò)過踢足球的機(jī)會(huì)。Wouldthisbeachanceformetoachievemylifelongdream?這會(huì)是成為我實(shí)現(xiàn)一生夢想的機(jī)會(huì)嗎？2．Parentsshouldgiveteenagerschancestomaketheirowndecisions.

父母應(yīng)該給青少年自己做決定的機(jī)會(huì)。(2)makeone’sowndecision意為“自己做決定”，相當(dāng)于makeadecisionforoneself。e.g.Ijustwanttobeabletomakemyowndecision.我只想能夠自己做決定。3．Theirparentsbelievethattheyshouldbeeducatedtotakecareofthemselvesfromayoungage.

他們的父母認(rèn)為他們應(yīng)該從小就被教育要照顧好自己。educate動(dòng)詞，意為“教育；教導(dǎo)”。常見搭配：educatesb.todosth.意為“教育某人做某事”。e.g.Thepoorboyhadtoeducatehimselfintheeveningafterfinishinghiswork.

這個(gè)貧窮的孩子不得不在干完活后晚上自學(xué)。Teacherseducate

studentstoprotectthemselves.老師教育學(xué)生自我保護(hù)。4．Thisway,whentheystartworkingtheycanmanagetheirownlives.

這樣，當(dāng)他們開始工作時(shí)，他們才能應(yīng)付自己的生活。manage意為“完成（困難的事）；應(yīng)付（困難局面）”，其后可接名詞、代詞或動(dòng)詞不定式。e.g.Iamnotsurehowwewillmanageit.我不確定我們將如何完成這件事。Youshouldmanagetofinishtheworkintime.你應(yīng)該設(shè)法及時(shí)完成工作。辨析managetodosth.與trytodosth.managetodosth.“設(shè)法做成某事”，強(qiáng)調(diào)結(jié)果，暗含“做成了某事”之意。try

todosth.“盡力做某事”，表示“盡力做；設(shè)法做”，強(qiáng)調(diào)動(dòng)作，不表示結(jié)果。e.g.Theshirtwasverydirty，buthemanagedtocleanit.這件襯衫很臟，但他