被動語態(tài)講解Review主動語態(tài)：表示主語和謂語之間是_________關(guān)系被動語態(tài)：表示主語和謂語之間是_________關(guān)系

英語的語態(tài)是通過動詞形式的變化表現(xiàn)出來的。英語中有兩種語態(tài)：主動語態(tài)和被動語態(tài)。We

cleantheclassroomeveryday.Theclassroomiscleanedbyuseveryday.主動被動被動語態(tài)的謂語動詞結(jié)構(gòu)為：be+動詞的過去分詞

be有時態(tài)和人稱的變化母親節(jié)每年都被我們慶祝。母親節(jié)去年被我們慶祝。我們已經(jīng)學過：一般現(xiàn)在時的被動語態(tài)一般過去時的被動語態(tài)Mother'sDayiscelebratedbyuseveryyear.Mother'sDaywascelebratedbyuslastyear.一般現(xiàn)在時的被動語態(tài)is/are+動詞過去分詞一般過去時的被動語態(tài)was/were+動詞過去分詞3、情態(tài)動詞的被動語態(tài)：情態(tài)動詞+be+動詞的過去分詞青少年應該被允許選擇自己的服裝。Teenagers__________________tochoosetheirownclothes.shouldbeallowedIdon’tthinksixteen-year-oldsshouldbeallowedtodrive.

Iagree.Theyaren’tseriousenough.Doyouthinkteenagersshouldbeencouragedtomaketheirowndecisions?Teenagersshouldnotbeallowedtohavepart-timejobs.No,Idon’tagreewiththis.Teenagersaretooyoungtomaketheirowndecisions.Idisagree.Theycanlearnalotfromworking.Ifyoudon’tuseaflash,thenitmaybeOK.Doyouthinkwemaybeallowedtotakephotosifwedon’tuseaflash?Canyoufindthepassivevoice

fromthisform?Whatelse

canyoufind?

含有情態(tài)動詞的被動語態(tài)情態(tài)動詞+be+動詞過去分詞情態(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)動詞后動詞變回原形。含情態(tài)動詞的被動語態(tài)句子結(jié)構(gòu)1.一般現(xiàn)在時被動語態(tài)的各種句式結(jié)構(gòu)肯定式主語+am/is/are+過去分詞（+by…)否定式主語+am/is/are+not

+過去分詞(+by…)

疑問式Am/Is/Are+主語+過去分詞(+by…)?特殊疑問詞+am/is/are+主語+過去分詞（+by...)?助記：被動不離“be”“p.p.”,“p.p.”前面助動be。主謂一致莫忘記，am,is,are現(xiàn)在時。2.一般現(xiàn)在時被動語態(tài)的基本用法

用法

示例表示經(jīng)常性或習慣性發(fā)生的被動動作Iamoftenaskedthequestionbymypupils.表示近期正在發(fā)生的被動動作ThesedayspeoplearemovedbyateachernamedZhangLili.描述某種常態(tài)化的被動的客觀事實Thespaceshipismainlycontrolledbycomputer.強調(diào)目前存在的針對行為主體人的被

限制性動作Youaren’tallowedtotakephotos.3.主動語態(tài)變?yōu)楸粍诱Z態(tài)的方法第一步:將主動語態(tài)的賓語改為被動語態(tài)的主語；第二步:將主動語態(tài)的謂語改為“be+過去分詞”結(jié)構(gòu)；第三步:將主動語態(tài)的主語改為介詞by的賓語，放在

謂語之后(有時可省略)。They(主語）grow(謂語）tea(賓語）inthesouth-eastofChina.被動語態(tài):主動語態(tài):Tea(主語）isgrown(謂語）bythem

inthesouth-eastofChina.含有情態(tài)動詞的被動語態(tài)句式結(jié)構(gòu)示例肯定句主語+情態(tài)動詞+be+及物動詞的過去分詞(+by…)Teenagersshouldbeallowedtogoshopping.否定句主語+情態(tài)動詞+not+be+及物動詞的過去分詞(+by…)Thewordcan’tbeusedinthissentence.一般疑問句情態(tài)動詞+主語+be+及物動詞的過去分詞(+by…)?Musttheworkbefinishedtoday?特殊疑問句特殊疑問詞+被動語態(tài)的一般疑問句？Whoshouldbeaskedforhelp?Doyouthinkteenagersshouldbeencouragedtomaketheirowndecisions?你認為應該鼓勵青少年自己做決定嗎？

makeone’sowndecision

意為自己做決定相當于makeadecisionforoneself。

Ijustwanttomakemyowndecision.

我只想能夠自己做決定。

含有情態(tài)動詞的主動句變?yōu)楸粍泳鋾r，謂語動詞部分改為“情態(tài)動詞+be+動詞的過去分詞”WecanwritelettersinEnglish.letterscanbewrittenbyusYoumustcleanyourbedroomeveryday.Rewritethesentencesaccordingtotheexample.Yourbedroommustbecleaned3.Parentswillencouragetheirchildrentodosocialworkfortheircommunity.willbeencouragedbytheirparentsChildren2.Iwilldothehouseworkintheafternoon.Thehouseworkwillbedone4.DoyouthinkwemustkeepteenagersawayfromtheInternet?5.Parentsshouldgiveteenagerschancestomaketheirowndecisions.teenagersmustbekeptTeenagersshouldbegivenShewatersflowerseveryday.ThomasEdison

invented

theelectricbulb.Weshouldclean

theclassroom

everyday.翻譯：否定句:一般疑問句青少年們應該被允許選擇自己的衣服。Teenagersshouldbeallowedtochoosetheirownclothes.Teenagersshouldnotbeallowedtochoosetheirownclothes.Shouldteenagersbeallowedtochoosetheirownclothes?含情態(tài)動詞的被動語態(tài)易錯點易錯點一：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：判斷下列句子是否正確？正確（T）錯誤（F）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。Shouldclassroombecleanedbystudents?Mustbemyroomcleanedbymyselfnow?Shouldbefoodwastedbypeople?Canthehomeworkbefinishedtomorrow?Canbemoonseenatnight?TFFTF被動語態(tài)的注意事項4、一般將來時的被動語態(tài)：will/isgoingto+be+動詞的過去分詞藝術(shù)與科技展覽會將在下個月舉行。

Theartandsciencefair____________nextmonth.willbeheld4bShouldteenagers________(ask)tomoveoutwhentheystartworking?InmanyWesterncountries,teenagers____________(allow)tomoveoutateighteen.Theirparentsbelievethattheyshouldtotakecareofthemselvesfromayoungage.Thisway,whenthey______(start)workingtheycanmanagetheirownlives.However,inmostAsiansocieties,itisnotcommonforteenagersto_____(move)out.Chineseparentsbelievethatitisbetterforchildrentolivewithparentswhocan_____(take)careofthem.Buttheyoungshouldthenlookaftertheirparentsastheygetolder.ThatiswhymanyChineseadults_________(continue)tolivewiththeirparents.Fillintheblankswiththecorrectformsof