現(xiàn)在進行時的結(jié)構(gòu)

一、 概念現(xiàn)在進行時表示說話時正在進行或發(fā)生的動作，也可表示當前一段時間內(nèi)的活動或現(xiàn)階段正在進行的動作.結(jié)構(gòu)：助動詞be(am/is/are)+現(xiàn)在分詞.二、 現(xiàn)在分詞的構(gòu)成：大多數(shù)動詞后可在動詞后直接加-ing.Eg:carry-carrying,catch-catching,drink-drinking,enjoy-enjoyinghurry-hurrying,do-doing,read-reading,think-thinking如果動詞以-e結(jié)尾,則去掉-e,再加-ing,如come-coming,have-having,make-making,ride-riding,write-writing,take-taking,use-using.如果動詞只有一個元音字母，而其后跟有一個輔音字母時,將此輔音字母雙寫，再加-ing如：hit-hitting,let-letting,put-putting,run-running,sit-sitting.如果動詞有兩個音節(jié)，且重音在第二個音節(jié)上，則末尾的輔音字母雙寫，加-ing,如：forget-forgetting,prefer-preferring,travel-travellingswim-swimming以-ic結(jié)尾的動詞，應先把-ic變?yōu)?ick,再加-ing,eg:panic/panicking但lie/lying,die/dying,tie/tying是特殊變化要記住.三、 句型結(jié)構(gòu)：現(xiàn)在進行時的肯定形式、否定形式、疑問形式及其回答，所有變化都體現(xiàn)在助動詞be(is/am/are)上.現(xiàn)在進行時的肯定形式：主語+be(am/is/are)+doing+其他成分Iamsinging.Theyarewriting.現(xiàn)在進行時的否定形式:主語+be(am/is/are)+not+doing+其他Iamnotsinging.Theyaren’twriting.一般疑問句及回答：be(am/is/are)+主語+doing+其他成分AmIsinging?Yes,youare./No,youaren’t.Aretheywriting?Yes,theyare./No,theyaren’t.特殊疑問句及回答:特殊疑問詞+be(am/is/are)+主語+doing+其他成分Whatareyoudoing?Weareplaying(要求就提問內(nèi)容具體回答).縮寫形式如下：Iam---I’mYouare---You’reHeis---He’sSheis---She’sItis---It’sWeare---We’reTheyare---They’re四、 用法：表示現(xiàn)在(指說話人說話時)正在發(fā)生的事情.往往與now,atthemoment,just等副詞連用，以示強調(diào).Wearewaitingforyou.Whatareyoudoing?Someone’sknockingatthedoor.正在進行著的動作可視為未完成的動作：He’stalkingtohisfriendsintheclassroom.可用still一詞強調(diào)動作的持續(xù)性He’sstilltalkingtohisfriendsintheclassroom.表示一段時間內(nèi)重復性的動作，說話時動作未必正在進彳亍.Mr.Blackiswritinganotherarticle.現(xiàn)在進行時可用來表示不會長期發(fā)生的動作或情況，或被認為在短期內(nèi)正在進行的動作或存在的狀態(tài)What’syourbrotherdoingthesedays?He’sstudyingEnglishatOxfordUniversity.現(xiàn)在進行時也可以用來表示當前的動向：Peoplearebecomingmoreandmorebeautifulthesedays.表示漸變的動詞有：become,turn,get,grow,run,go,begin等.Theleavesareturningbrown.It’sgettingcolderandcolder.與always,constantly,forever等詞連用,表示反復發(fā)生的動作或持續(xù)存在的狀態(tài),往往帶有說話人的主觀色彩.Youarealwayschangingyourmind.用現(xiàn)在進行時完成下列句子：you(fly)akite?Yes,.you(sit)intheboat?he(talk)withme?We(play)footballnow.What you(do)?I(sing)anEnglishsong.What he(mend)?He(mend)acar.Theseboys(play)tennisontheplayground.Mymother(cook)inthekitchen.Wecan’thelpyou,becausewe(have)classes.theboy(write)hishomework?Look!Thesebutterflies(fly)inthesky.Listen!Thegirl(sing)inthenextroom.Thenaughtyboy(swim)intheriver.選擇Look.Lucyisanewbiketoday.A.jumpingB.runningC.ridingDtakeingThechildrenfootball.A.isplayingB.areplayingC.playtheD.playaTheyTVintheevening.Theydotheirhomework.A.arewatchingB.can’twatchingC.don’twatchD.don’twatchingListen!Sheintheclassroom.A.issingingB.singC.tosingD.issingareyoueating?I’meatingmeat.A.What,someB.Which,anyC.Where,notD.What,aIsshesomething?A.eatB.eatingC.eattingD.eats7Ican’tcatchupwiththefashion,becausetheclothesstyleallthetime.A.haschangedB.ischangedC.ischangingD.changedIt’ssixintheafternoon.TheGreenslunchtogether.A.hasB.arehavingC.havehadD.hadhadDon’tmakeanynoisewhilethestudentstothe