【一般现在时的英语语法讲解】
一般现在时的英语语法讲解
【一般现在时的英语语法讲解】
一般现在时的英语语法讲解
以下内容选自奥风英语《高考语法完全突破记忆大纲》
1.一般现在时
(1).一般现在时的句型结构
①肯定句:主语+am/is/are+表语
主语+实义动词(+其它)
②否定句:主语+am/is/are+not+表语
主语+don’t(doesn’t)+实义动词原形(+其它)
③疑问句:Am/Is/Are+主语+表语
Do(Does)+主语+实义动词原形(+其它)
(2)一般现在时的用法
①表示不随时间的变化而变化的事实,真理,格言,警句等.
如:Theteachersaidtheearthgoesaroundthesun.
Practicemakesperfect.
TomorrowisMonday.
②表示目前,现在经常发生的动作,习惯,或存在的状态.常与下列表示次数的频率副词连用:often,usually,always,sometimes,seldom,everyday(week,year,night),onceaweek等.
如:Classbeginsateighteverymorning.
Helookstired.
Weusuallygetupat:30inthemorning.
Ourmathsteacherwearsathickpairofglasses.
③表示“预定”或是“安排好”要发生的,不会轻易改变的未来动作或安排.常用于此类用法的动词有begin,come,go,move,stop,leave,return,arrive,finish,open,close,start等.
如:TheplaneleavesforBeijingat8o’clock.
Themeetingbeginsatseven.
④在表时间和条件的状语从句中,用一般现在时代替将来时.
常见引导时间状语从句的词汇:
when,while,whenever,before,after,till,until,bythetime,assoonas等.
常见引导条件状语从句的词汇:
if,unless,aslongas,solongas,incase(that),provided(that).
如:Wewillhaveanexamwhenwefinishthetextbook.
We’llstayathomeifitrainstomorrow.
Aslongaswekeepplayingwell,we'llkeepwinninggames.
Unlesssomeextramoneyisfound,thetheatrewillclose.
You’dbettertakeanumbrellaincaseitrains.