英语语法 现在进行时 4页

现在进行时的讲解与练习。基本用法：  （1）表示（说话瞬间）正在进行或发生的动作。 （2）也可表示当前一段时间内的活动或现阶段正在进行的动作。（二）谓语构成：be(am/is/are)＋v-ing（动词的现在分词） I’mwatchingTVnow.  They’replayingfootball.（三）现在分词的构成。（1）一般情况下在动词词尾加ing。go→going            ask→asking              look→looking （2）以不发音的e结尾的动词，去掉e加ing。have→having     take→taking         make→making      write→writing（3）以一个辅音字母结尾的重读闭音节，双写最后一个字母，再加-ing。get→getting          sit→sitting            put→putting         run→running swim→swimming        begin→beginning          shop→shopping（四）现在进行时态的肯定式、否定式、疑问式及简略回答。（1）肯定式：be＋v-ing           Sheissinginginthenextroom. （2）否定式：be＋not＋v-ing          Thestudentsaren’tcleaningtheroom. （3）一般问句：be动词提前。肯定答语Yes，主语＋be，否定答语No，主语＋benot。Areyouplayingthecomputergame? Yes,Iam./No,Iamnot.  （4）特殊问句：对谓语动词进行提问的：What＋be＋主语＋doing＋其他？Whatistheoldmandoingunderthetree? 对其他成份进行提问的，疑问词＋一般疑问句？Whereistheboyswimming? Whoisshewaitingfor?三.现在进行时与一般现在时的区别（一）现在进行时表示动作的暂时性，而一般现在时表示动作的习惯性和经常性IamwatchingTVnow.（暂时性）IwatchTVeveryday.（经常性）（二）现在进行时可表示短暂性动作，而一般现在时表示长久性动作。LucyislivinginBeijing.（短时间居住）LucylivesinBeijing.（长久性居住）（三）现在进行时表示的动作可带有感情色彩，而一般现在时所表述的动作通常是事实。You’realwaysforgettingthemostimportantthings.（责备）Heisalwayshelpingothers.（赞扬）Heoftenhelpsothers.（事实）（四）有些动词不能用进行时，know,understand,love,like,hate,wish,want,think,hope,have,believe,agree,hear,see,notice，等等。这些动词通常用一般现在时表示说话时发生的动作。Ihavealotoffriendshere. Shewantstobuyanewbike. 【典型例题】一、用括号内所给单词的适当形式填空。1.Look!There__________(be)alotofpeopleoverthere.What__________they__________(do)now? 2.—What__________yourmother__________(do)?—Sheisateacher. 3.It__________(rain)heavilyoutsidenow.Youmuststayathome. 4.Don’tsing.Thebaby__________(sleep).5.Mybrother__________(notlike)playingbasketball,buthe__________(like)playingfootball. 6.—What_________youusually_________(do)onSunday?  —Iusually_________(stay)athomeand_________(do)myhomework. 7.Listen!Thegirls_________(sing)inthenextroom. 8.Mysister_________(want)tobeateacher. 9.It’sseveno’clocknow.TheGreens_________(have)supper.  10.Heoften_________(swim)onSundays.Look!He_________(swim)atthepool.二、单项选择1.Iwant_________homeworknow.  A.doing              B.todo               C.todomy         D.domy 2.It’stime_________.  A.gotoschool            B.playgames       C.togohome      D.todomyhomeworks 3.Theboyis_________tohisteacher.   A.saying                    B.speaking                 C.talking             D.telling 4.I’m_________abookintheroom.  A.watching                B.seeing                     C.reading            D.looking 5.Where_________he_________from?  A.is,come                 B.do,come                C.does,come             D.is,from 6.Dotheyhaveanewcar?Yes,_________.  A.theyare           B.theyhave         C.theydon’t        D.theydo 7.Heoften_________supperat6:00intheevening.  A.have                B.has                  C.ishaving          D.iseating 8.It’s6o’clockinthemorning.He_________.  A.getup             B.getsup            C.isgetingup             D.isgettingup 9.Whatareyoudoing?I’m_________TV.  A.watch             B.watches           C.towatch          D.watching 10.We_________anyChineseclassesonFriday.  A.arehaving        B.aren’thaving           C.don’thave      D.arehave 11.Tom_________anEnglishclassnow.  A.ishaving          B.has           C.having             D.have 12.Areyouplayingbasketball?No,we_________.  A.isn’t         B.aren’t              C.not           D.don’t