内容正文:
Welcome to our class
Sun Liting
-----现在完成时态
语法练习课
时态
不同时间发生的动作,动词要用不同形式
已学习过的时态
1.v原形 2.v+s/es(三单现)
am/is/are+v-ing
1.will/shall+v原形
2.am/is/are going to +v原形
1.v-ed(规则动词)
2.不规则动词
was/were+v-ing
名称 时间 动动词形式
一般现在时 平时,经常 1.v原形 2.v+s/es(三单现)
现在进行时 正在进行 am/is/are+v-ing
一般将来时 即将,计划 1.will/shall+v原形
2.am/is/are going to +v原形
一般过去时 过去(与现在无关) 1.v-ed(规则动词)
2.不规则动词
过去进行时 过去某一时间,在进行 was/were+v-ing
判断下列句子的时态
1.She works in a factory.
2.I was doing my homework at this time yesterday.
3.We are going to have a picnic this Sunday.
4.They held a sports meeting last week.
5.Are you helping your mother .
一般现在时
过去进行时
一般将来时
一般过去时
现在进行时
现在完成时
1.过去发生的动作对现在造成的影响或结果。
2.过去已经开始,持续到现在的动作或状态
动词构成:have/has+v过去分词
have breakfast
I have just had my breakfast.
(现在我不饿)
I’m not hungry now
moved here
in 2000
I still live here
I have lived here for three years.
I have lived here since 2000/three years ago.
现在完成时动词构成
have /has+v 过去分词
助动词
否定
haven’t
hasn’t
疑问
Have you……?
Has he……?
动词的过