初中英语时态讲解

1初中英语时态讲解or或since等表示一段时间的状语。如：MrWanghaslivedheresince1983.3.现在完成时瞬间动词即终止性动词不能与表示一段时间的状语连用。常见终止性动词与延续性动词(或状态动词)的对应关系如下:come/go/arrive/get/reach/move---bein/atopen---beopendie---bedeadclose---beclosedbecome---be初中阶段，要求学生掌握动词六种时态的基本结构(一般现在时，一般过去时，现在进行时，过去进行时，现在完成时和一般将来时态)及它们的主要用法和区别。了解过去将来、过去完成时态的基本用法，解题时注意找出关键词，正确判断出时态，按时态结构正确变化动词。注意句子时态的一致性，注意对特殊时态的处理。1、一般现在时。一般现在时通常表示目前阶段经常发生的动作或存在的状态。通常用“usually,often,everyday,sometimes”。结构:1）be动词。有一顺口溜：我用am，你用are，is用于他，她，它,单数is，复数are.肯定式:主语+am/is/are+其他否定式:主语+am/is/are+not+其他疑问式:Am/Is/Are+主语+其他?简略回答:(肯)Yes,主语+am/is/are(否)No,主语+am/is/arenot2）行为动词（实义动词）除主语是第三人称单数外，都用动词原形，主语是第三人称单数时，在动词词尾加-s或-es。“动词第三人称单数”的加法即“如何从动词原形变为第三人称单数”1、一般情况加s.2、以o,s,x,ch,sh结尾加es.3、以“辅音字母+y”结尾改y为i+es肯定式:主语+动词原形/动词的第三人称单数否定式:主语+助动词don't/doesn't+动词原形+其他疑问式:Do/Does+主语+动词原形+其他简略回答:(肯)Yes,主语+do/does(否)No,主语+do/doesnot缩写形式:don't==donotdoesn't==doesnot注意：have的第三人称单数为has用法：1.表示事实,现状,性质或经常的,习惯的动作,常与often,usually,always,sometimes,today,everyday,onceaweek,everyfiveminutes,onSundays等时间状语连用,eg.Hehasabrother.2.表示普遍真理.eg.Theearthgoesroundthesun.3.表示在现在时间里所发生的一个动作.eg.Herecomesthetrain.4.在时间和条件状语从句中代表一般将来时.eg.I'llgowithyouifyouarefreetomorrow.一般现在时用法专练:一、用括号内动词的适当形式填空。1.Heoften________(have)dinnerathome.2.DanielandTommy_______(be)inClassOne.23.We_______(notwatch)TVonMonday.4.Nick_______(notgo)tothezooonSunday.5.______they________(like)theWorldCup?二、改错(划出错误的地方，将正确的写在横线上)1.IsyourbrotherspeakEnglish?__________________2.Doeshelikesgoingfishing?__________________3.Helikesplaygamesafterclass.__________________4.Mr.WuteachsusEnglish.__________________5.Shedon’tdoherhomeworkonSundays._________________用动词的适当形式填空1.Ilike____________(swim).2.He_________(read)Englisheveryday.3.We_________(go)toschoolatseveninthemorning.4.Mike________(go)toschoolatseveninthemorning.5.Mymother________(like)______(go)shopping.6.Ican________(draw)manybeautifulpictures.7.She_________(make)amodelplane.8.Doyou________(like)_________(run)?9.Doeshe_________(like)_________(jump)?10.DoesNancy_________(grow)flowersonSaturday?2、现在进行时。通常用“now/look/listen”.1．现在进行时表示现在正在进行或发生的动作，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。2．现在进行时的结构：.肯定句：主语+be（is,am,are）+动词现在分词-ingeg:Iam(not)doingmyhomework.You/We/Theyare(not)reading.否定句：主语+be（is,am,are）+not+动词现在分词-ing一般疑问句：Is(Are)+主语+动词现在分词-ing？特殊疑问：疑问词+be+主语+动词ing?33.动词加ing的变化规则1)一般情况下，直接加ing，如：cook-cooking2)以不发音的e结尾，去e加ing，如：make-making,taste-tasting3)如果末尾是一个元音字母和一个辅音字母，双写末尾的辅音字母，再加ing，如：run-running,stop-stopping,swim—swimming4.现在进行时专项练习：用所给的动词的正确形式填空：1.Theboy__________________(draw)apicturenow.2.Listen.Somegirls_______________(sing)intheclassroom.3.Mymother_________________(cook)somenicefoodnow.4.What_____you______(do)now?5.Look.They_______________(have)anEnglishlesson.6.______Helen____________(wash)clothes?Yes,sheis.二、用所给的动词的正确形式填空：1.Theboy__________________(draw)apicturenow.2.Listen.Somegirls__________(sing)intheclassroom.3.Mymother____________(cook)somenicefoodnow.4.What_____you______(do)now?5.Look.They_____________(have)anEnglishlesson.6.They____________(not,water)theflowersnow.7.Look!thegirls____________(dance)intheclassroom.8.Whatisourgranddaughterdoing?She_________(listen)tomusic.9.It's5o'clocknow.We___________(have)suppernow10.______Helen__________(wash)clothes?Yes,sheis。写出下列动词的现在分词：play______run__________swim________make_______go________like________write________ski_______read________have_______sing_______dance_______put______see_____buy______love__________live_______take________come________get________stop________sit________begin________shop__________3、一般过去时态一般过去时通常用“amomentago,justnow,yesterday,last…”等。1．一般过去时表示过去某个时间发生的动作或存在的状态，常和表示过去的时间状语连用。一般过去时也表示过去经常或反复发生的动作感谢。2．Be动词在一般过去时中的变化：⑴am和is在一般过去时中变为was。（wasnot=wasn’t）4⑵are在一般过去时中变为were。（werenot=weren’t）⑶带有was或were的句子，其否定、疑问的变化和is,am,are一样，即否定句在was或were后加not，一般疑问句把was或were调到句首。3.行为动词的一般过去时变化肯定句（Positive）动词过去式Iwentshoppinglastnight.否定句(Negative)didn’t+动词原形Ididn’tgoshoppinglastnight.一般疑问句(Yes/No)Did…+动词原形…?Didyougoshoppinglastnight?特殊疑问句(wh-)Whatdid…+动词原形…?Whatdidyoudolastnight?4.动词过去式的变化：规则动词的变化：一般动词+edplanted,watered,climbed以不发音的e结尾+dliked辅音字母加y结尾-y+iedstudy—studied,cry-cried重读闭音节单词，末尾只有一个辅音字母双写最后一个字母+edstop–stoppedplan-planned不规则动词的变化：原形过去式原形过去式原形过去式原形过去式sweepsweptteachtaughthavehadgowentkeepkeptthinkthoughtdodidfindfoundsleepsleptbuyboughteatatesaysaidfeelfeltdrinkdrankis/amwastaketookreadreadgivegaveareweremeanmeantputputsingsangdrivedrovemeetmetcutcutbeginbeganspeakspokemakemadeletletringrangwritewroteseesawflyflewrunranriderodecomecamedrawdrewsitsathearheardtelltoldgrowgrewlearnlearned/learntgetgotknowknew5.特殊疑问句：⑴疑问词+did+主语+动词原形？如：WhatdidJimdoyesterday?⑵疑问词当主语时：疑问词+动词过去式？如：Whowenttohomeyesterday?过去时练习:一、用be动词的适当形式填空1.I_______atschooljustnow.2.He________atthecamplastweek.3.We________studentstwoyearsago.4.They________onthefarmamomentago.5.YangLing________elevenyearsoldlastyear.56.It______Ben’sbirthdaylastFriday.二、用行为动词的适当形式填空1.He_________(live)inWuxitwoyearsago.2.Thecat________(eat)abirdlastnight.3.We_______(have)apartylastHalloween.4.Nancy________(pick)uporangesonthefarm