2024年3月14日发(作者:)

一般现在时讲解及练习

1、 定义与讲解

一般现在时:表示经常性的事情,经常性的动作或一般性事实。

时间状语:often 经常,usually通常,always 总是,every+名词每个,sometime

s 有时,once a week ,on Sundays ,if 的从句at …在几点钟

2. 表示客观真理,科学原理,自然现象,等客观事实或格言,谚语等。

The sun rises in the east and sets in the west every day.

The man who has never been to the Great Wall is not a real man.

Tomorrow is Tuesday.

只有在第三人称单数用动词的“三单变化”,其他用动词的原形。三单变化:

(1)直接在动词词尾加-s.

ask---asks work---works get---gets stay---stays

(2)以字母s, x, ch, sh或o结尾的动词,在词尾直接加-es.

watch---watches wish---wishes fix---fixes pass---passes

(3)以“辅音字母加 - y”结尾的动词,要先变y为i再加-es.

try---tries study---studies cry---cries fly---flies play — plays

2.不规则变化:be---- is are have----has do---does go---goes

三、一般现在时的句子转换:(1)当句子中有be动词或情态动词时,则把be动词或

情态动词(can,could等等)提到主语的前面变成疑问句;在be动词或情态动词后面加not

变成否定句陈述句She is a student.疑问句Is she a student? 否定句 She is not a s

tudent.

陈述句:I can swim.疑问句→ Can you swim否定句→ I can not swim.(2)当

句子中即没有be动词,也没有情态动词时,则在主语前加助动词do (you,以及复数), do

es(单数she,he,it)变成问句;在主语后谓语动词前加助动词don’t(I,you,以及复数),

doesn’t(单数she,he,it)变成否定句,助动词后的动词要变成动词原形。

陈述句:We get up at 7:00 every morning.

疑问句Do you get up at 7:00 every morning?

否定句→We don’t get up at 7:00 every morning.

陈述句:She has a little brother.

疑问句→ Does she have a little brother?