一般现在时和现在完成时-讲解练习答案

一般现在时一、概念表示现在经常发生的动作、存在的状态或习惯性的动作。二、动词词型变化形式第三人称有词形变化，其他人称动词均用原形单数第三人称动词变化：a.多数在动词后加splay—playslike—likes,b.以s，x，sh，ch结尾的动词加esmiss-misses,fix-fixes,wash--washes,watch-watchesc.以辅音字母+o结尾的动词加esgo—goesdo—doesd.以辅音字母加y结尾，把y改i再加esfly—fliesstudy--studies三.一般现在时的句型1.肯定句构成：主语+动词(注意人称变化)+其它成分Ihaveadog.Welikethelittlecat.Shesingswell.2.否定句构成：行为动词的否定句：主语+助动词(do/does)+not+动词原形+其它成分Hedosen’thaveadog.Heisn’tyoung.Wedon’tlikethelittlecat.(借助于助动词do)Shedoesn’tsingwell.(借助于助动词does)3.一般疑问句：A.行为动词的一般疑问句：助动词(do/does)+主语+动词原形+其它成分Doyoulikeit?Yes,Ido./No.Idon’t.Doeshe(she)likeit?Yes,he(she)does./No,he(she)doesn’t.B.动词be的一般疑问句Am/Is/Are+主语+其它成分Areyouateacher?Yes,Iam./No,Iamnot.Aretheystudentsofyourschool.Yestheyare/Notheyaren’t.4.特殊疑问句：特殊疑问词+一般疑问句Howmanystudentsarethereinyourschool?WhatdoyouusuallydoonSunday?四．一般现在时的用法1.经常性或习惯性的动作，常与表示频度的时间状语连用。如：everyyear,sometimes,at5o’clock,onSunday.Igetupatsixo’clockeveryday.Hegetsupatsixo’clockeveryday.Shesmokestoomuch.Itelephonetomyparentsonceaweek.2.表达客观真理，科学事实。如果出现在宾语从句中，即使主句是过去时，从句谓语也要用一般现在时。Threeandfourmakesseven.Theteachertoldusthattheearthmovesaroundthesun.ShenyangliesinthenorthofChina.3.在格言或名言警句中。Pridegoesbeforeafall.骄必败。Actionsspeaklouderthanwords.事实用于雄辩。4.表示现在的状态、性格、个性。Idon’twantmore,thanks.Heisagoodstudent.Heisalwaysreadytohelpothers.五.一般现在时其它用法一般现在时表将来1.含有go,come,return,arrive,leave,start,begin等动词的一般现在时表将来。表示在时间上已确定或安排好的事情。Theschoolbusleavesateight.2.在时间或条件句中。WhenTomcomes,askhimhowtofixthetap.I’llhelpyouassoonasIarrivethere.3.在动词hope,takecarethat,makesurethat等后。练习一.用词的适当形式填空。1.Whattime_________hisfather_________(do)thework?2.He_________(get)upatfiveo’clock.3.__________you_________(brush)yourteetheverymorning.4.What________(do)heusually________(do)afterschool?5.Tom________(study)English,Chinese,Maths,ScienceandArtatschool.6.Kittysometimes__________(go)totheparkwithhissister.7.Ateightatnight,she__________(watch)TVwithherparents.8.________Mike________(read)Englisheveryday?9.Howmanylessons________yourclassmates______(have)onMonday?10.Weoften___________(play)footballintheplayground.二．选择()1._____youhaveabook?A.DoB.AreC.IsD.Have()2.They_________onafarm.A.workingB.isworkC.workD.isworked()3.DoesPeterliketowatchTV?__________.A.Yes,helikeB.No,hedoesn’tC.Yes,he’dlikeD.No,helikes()4.Shedoesn’t__________herhomeworkintheafternoon.A.doingB.todoC.doesD.do()5.How____________Mr.Brown___________toAmerica?A.do,goB.is,goC.does,goD.does,goes()6.Where’smycamera?I____________it.A.amnotfindingB.amnotseeingC.can’tfindD.can’tlookat()7.How___________hegotowork?He___________toworkbybike.A.does;goB.do;goesC.do;goD.does;goes()8.______youusuallylateforschool?No,_____________.A.Do;IamB.Does;notC.Are;I’mnotD.Are;Iaren’t()9._____she_____homeatsixeveryday?A.Is,leaveB.Does,leaveC.Is,leavesD.Does,left()10.Mr.Yang____________Englishthisterm.A.teachesourB.teachesusC.teachsusD.teachour答案：一.1.does,do2.gets3.Do,brush4.does,do5.studies6.goes7.watches8.Does,read9.do,have10.play二.1---5ACBDC6---10CDCBB现在进行时定义：现在进行时的定义：现在进行时表示现在或当前一段时间正在进行的动作。可以表示有计划的未来，也就是用现在进行时表示将来。构成：现在进行时的构成是:主语+be+v.ing〔现在分词〕形式肯定句:主语+be（is/am/are）+现在分词否定句：主语+be（is/am/are）+not+现在分词一般疑问句:be（is/am/are）+主语+现在分词特殊疑问句：特殊疑问词+相应be动词+主语+现在分词+sth变化规则：1.直接+ing(例：sleep+ingsleeping)2.以不发音的e结尾的去掉e,再+ing(例：bite-e+ingbiting)3.重读闭音节，且末尾只有1个辅音字母，双写辅音字母+ing(例：sit+t+ingsitting另cut--cuttingbegin--beginning)4.特殊变化：die-dying,lie-lying，tie-tying5.不规则变化时间状语：可用来表示现在进行时的时间状语，常用的有：now,thisweek,atthismoment等；或者告诉你一个准确的现在时间，或者用look,listen提醒听者注意正在发生的事。例如：Listen!SheissinginganEnglishsong.听，她正在唱英语歌。Lookatthepicture.Thechildrenareflyingkitesinthepark.看这幅图。那些孩子正在公园放风筝。用法：1．最基本的用法是表示此刻正在进行或发生的动作，通常和时间状语now、atthemoment等连用。Theyarevisitingthefirestationnow.他们现在正参观消防站。2．表示现阶段正在进行但此刻不一定在进行的动作，它通常和时间状语now、thesedays等连用。Theyareworkinginthisfactorythesedays.这几天他们在这个工厂工作。3．表示最近的确定或安排时。Heistakingmetothetheatrethisevening.今晚他要带我到电影院。4．某些表示位置转移的动词如go、leave、start、come等它们的现在进行时表示将来。HeisleavingfortheGreatWalltomorrow.明天他要动身去长城。练习用现在进行时完成下列句子:1.What________you_________(do)?2.I___________(sing)anEnglishsong.3.What________he____________(mend)?4.He____________(mend)acar.5.______you__________(fly)akite?Yes,_______.6.______she___________(sit)intheboat?7.______you_________(ask)questions?8.We____________(play)gamesnow选择填空。1.Someare_________intheriverandsomeare_________games.A.swiming,playingB.swimming,plaiingC.swimming,playingD.swimming,plaing2.Look!Theboystudentsare___footballwhilethegirlsare______.A.playing,danceB.playing,dancingB.C.play,dancingD.play,dance3.Mr.Smith____shortstories,buthe_____aTVplaythesedays.A.iswriting,iswritingB.iswriting,writesC.writes,iswritingD.writes,writes4.I_______tothecinema.I_________thereeverySunday.A.go.goB.amgoing,goC.go.amgoingD.amgoing,amgoing5.You________aboutthefuture(将来)now,________you?A.don'tthink,don'tB.aren'tthinking,aren'tC.don'tthink,doD.aren'tthinking,are答案1aredoing2amsinging3ismending4ismending5AreflyingIam6Issitting7Areasking8areplayingCBCBC