小學階段現(xiàn)在進行時的結構和用法

小學階段現(xiàn)在進行時的結構和用法小學階段現(xiàn)在進行時的結構和用法/NUMPAGES8小學階段現(xiàn)在進行時的結構和用法小學階段現(xiàn)在進行時的結構和用法小學階段現(xiàn)在進行時的結構和用法一、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．結構：助動詞be(am/is/are)+現(xiàn)在分詞.二、現(xiàn)在分詞的構成：1.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-thinking2.如果動詞以-e結尾,則去掉-e,再加-ing,如come-coming,have-having,make-making,ride-riding,write-writing,take-taking,use-using．3.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．4.如果動詞有兩個音節(jié),且重音在第二個音節(jié)上,則末尾的輔音字母須雙寫,再加-ing,如:for’get-forgetting,pre’fer-preferring,up’set-upsetting．試比較’benefit/benfiting,’differ/differing,’profit/profiting,這些詞的重音在第一個音節(jié)上,因此其末尾的輔音字母不雙寫．5.以-ic結尾的動詞,應先把-ic變?yōu)?ick,再加-ing,eg:panic/panicking,picnic/picnicking,但lie/lying,die/dying,tie/tying是特殊變化要記?。?、句型結構：1.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．①現(xiàn)在進行時的肯定形式：主語+be(am/is/are)+doing+其他成分Iamsinging.Theyarewriting.②現(xiàn)在進行時的否定形式:主語+be(am/is/are)+not+doing+其他成分Iamnotsinging.Theyaren’twriting.③一般疑問句及回答：be(am/is/are)+主語+doing+其他成分AmIsinging?Yes,youare./No,youaren’t.Aretheywriting?Yes,theyare./No,theyaren’t.④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).2.縮寫形式如下:IamI’mYouareYou’reHeisHe’sSheisShe’sItisIt’sWeareWe’reTheyareThey’re3.說明:不是所有動詞都能用現(xiàn)在進行時態(tài)的,如：see、like、want、know等動詞往往都不用進行時態(tài)．練習一.用現(xiàn)在進行時完成下列句子:1.______you__________(fly)akite?Yes,_______.2.______you___________(sit)intheboat?3.______he_____________(talk)withme?4.We_______________(play)footballnow.5.What_________you__________(do)?6.I_____________(sing)anEnglishsong.7.What________he____________(mend)?8.He______________(mend)acar.9.Theseboys_________(play)tennisontheplayground.10.Mymother______________(cook)inthekitchen.11.Wecan’thelpyou,becausewe____________(have)classes.12.________theboy___________(write)hishomework?13.Look!Thesebutterflies_________(fly)inthesky.14.Listen!Thegirl___________(sing)inthenextroom.15.Thenaughtyboy__________(swim)intheriver.

二.選擇1.Look.Lucyis_____anewbiketoday.A.jumpingB.runningC.ridingDtakeing2.Thechildren_____football.A.isplayingB.areplayingC.playtheD.playa3.They______TVintheevening.Theydotheirhomework.A.arewatchingB.can’twatchingC.don’twatchD.don’twatching4.Listen!She____intheclassroom.A.issingingB.singC.tosingD.issing5.______areyoueating?I’meating______meat.A.What,someB.Which,anyC.Where,notD.What,a6.Isshe____something?A.eatB.eatingC.eattingD.eats7.Mydictionary___,Ihavelookedforiteverywherebutstill___it.A.haslost,don’tfindB.ismissing,don’tfindC.haslost,haven’tfoundD.ismissing,haven’tfound.8..Havingacomputerforpersonaluseisnoeasytaskbecausetechnology_______sorapidly.A.ischangingB.haschangedC.willhavechangedD.willchange9.Thebuilding_______,Ican’tstandthenoise.A.wasbeingbuiltB.isbuiltC.isbeingbuiltD.builds10.Ican’tcatchupwiththefashion,becausetheclothesstyle_______allthetime.A.haschangedB.ischangedC.ischangingD.changed11.It’ssixintheafternoon.TheGreens_______lunchtogether.A.hasB.arehavingC.havehadD.hadhad12.Don’tmakeanynoisewhilethestudents_______totheclass.A.arelisteningB.listenedC.havelistenedD.hadlistened13.JackandKetty_______inthelake.Let’sjointhem,shallwe?A.swimB.haveswumC.swamD.areswimming14.Look!Thechildren_______basketballontheplayground.A.playsB.playedC.isplayingD.areplaying15.Thekite_______highintheskynow.Itlookslikeabigbird.A.hasflownB.isflyingC.wasflyingD.flew16.Asweallknow,thepopulationintheworld_______fasterandfaster.A.isgrownB.isgrowingC.aregrownD.aregrowing17.Tomysurprise,he_______inclass.A.isalwaysspeakingB.wouldalwaysspeakC.hasalwaysbeenspeakingD.doesspeakalways18.Iwanttoknowwhenhe_______forNewYorktomorrow.A.hasleftB.isleavingC.hadleftD.hasbeenleaving19.He_______ofhowhecandomoreforthepeople.A.hadalwaystho