一般现在时一、用法1.表示经常发生的动作、行为或存在的状态。常用的时间状语有:often,usually,always,everyday/week/month/year,sometimes,seldom,onceaweek,twiceaweek,onSundays等。Igotoschooleveryday.2.表示主语的身份或特征。Hisfatherisadoctor.Tomistall.3.表示一种客观事实或普遍真理。Theearthisround.Thesunisbiggerthanthemoon.4.在条件状态从句和时间状语从句中,用一般现在时表示将来。Ifyoudon’tgosoon,you’llbelate.如果你不快去的话,你就要迟到了。二、构成动词一般现在时,除主语为单数第三人称以外,谓语动词一律用原形,若主语为第三人称单数,则谓语动词的词尾应发生变化(加-s或-es)。1.在动词原形后加-srun→runs2.以ch,sh,s,o,x结尾的动词后加-esguesses,fixes,teaches,washes,goes3.以辅音字母+y结尾的动词,先将y变为i,再加-estry→tries4.以元音字母+y结尾的动词后加-sstay→stays5.have-has三、一般现在时的句型变化。1.肯定句(1)主语+am/is/are+表语Theyarenewstudents.Iamtall.HeisfromJapan.amisare用法口诀:I用am,you用are,is连着他、她、它;单数用is,复数一律都用are。(2)a.主语+实义动词+其它IreadEnglisheverymorning.b.单三人称主语+实义动词单三人称+其它Heusuallygoestoschoolbybike.2.否定句(1)主语+am/is/are+not+表语Sheisnotanurse.(2)a.主语+don’t+动词原形+其它如:Idon’tplaysoccerafterschool.b.单三人称主语+doesn’t+动词原形+其它Hedoesn’tgototheparkafterschool.3.一般疑问句(1)Am/Is/Are+主语+表语?Isyourmotherateacher?(2)a.Do+主语+动词原形+其它?DoyouspeakEnglish?b.Does+单三人称主语+动词原形+其它?Doesyourbrotherhaveawidemouth?4.特殊疑问句特殊疑问词+一般疑问句?Whattimedoesyourmothergetupeveryday?专项练习题一、写出下列动词的第三人称单数形式1.study________2.play________3.watch_____4.wash_______5.have_______6.ride_______7.take_______8.worry_______9.help_______10.say________11.put________12.teach________13.fly________14.eat________15.go_______16.guess______17.read_______18.do_______19.call________20.cry________二、用所给动词的适当形式填空1.Heoften______(have)dinnerathome.2.DanielandTommy_____(be)inClassOne.3.We_______(notwatch)TVonMonday.4.Nick______(notgo)tothezooonSunday.5._____they____(...