英语语法现在进行时.docx

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→goingask→askinglook→looking（2）以不发音的e结尾的动词，去掉e加ing。have→havingtake→takingmake→makingwrite→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→gettingsit→sittingput→puttingrun→runningswim→swimmingbegin→beginningshop→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-ingSheissinginginthenextroom.（2）否定式：be＋not＋v-ingThestudentsaren’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.doingB.todoC.todomyD.domy2.It’stime_________.A.gotoschoolB.playgamesC.togohomeD.t