null-----现在完成时态-----现在完成时态语法练习课时态时态不同时间发生的动作，动词要用不同形式
已学习过的时态已学习过的时态1.v原形 2. v三单am/is/are+v-ing1.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判断下列句子的时态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had breakfastI have just had my breakfast.(现在我不饿)I’m not hungry nowmoved here
in 2000I still live hereI have lived here for three years.I have lived here since 2000/three years ago. nownull
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……?动词的过去分词形式动词的过去分词形式1.规则动词
2.不规则动词finish--finished--finished
live--lived--lived
carry--carried--carried
stop—stopped--stopped
Eg.go—went—gone
see---saw—seen
forget—forgot--forgottennullI, finish,
homeworkI haven’t finished my homework.Have you finished your homework?
Yes, I have. / No, I haven’t.I have finished my homework.null1. 她成为一名护士已经三年了。
2. 我五年前就认识李雷了。
3. 那些相片我已经寄给他了。（post）
4. 我来到这个学校后，他就一直教我。
5. 我刚丢了我的历史书。She has been a nurse for three years.I have known Lilei since five years ago. I have already posted the photos to him.He has taught me since I came to the school.I have just lost my history book.null ( 1).for+
表
关于同志近三年现实表现材料材料类招标技术评分表图表与交易pdf视力表打印pdf用图表说话 pdf
示一段时间的短语
( 2).since+表示过去时间点的词语
( 3).since+表示过去时间的时间状语从句eg.I have been a teacher ______ a year.
He has been at this school _______ 1992.
We have learned 1,000 English words _______ we came to this school.forsincesince B. just, already, yet, before/ ever, never
有此类副词时,常强调动作完成,不强调动作的持续. eg.Have you _____been to Japan?
I have _____ finished my homework.
I have finished my homework ______.
I haven’t finished my homework ____.everjustalreadyyet1.现在完成时句中常见的时间
A.表示从过去一直持续到现在,不能是具体过去时间null2.区分短暂性动词与持续性动词.
表示短暂性(瞬间性)的动词在现在完成时的句中不能和一段时间连用.即for,since短语或how long问句nullcome/arrive
go out
leave
begin
buy
borrow
join
die
catch a coldbe at/in …be outbe away (from)be onhavekeepbe a member ofbe deadhave a cold been beenHow long have you become a league member？
For more than one year.
Have you arrived here since last night.
Yes，you’re right.
The dog has died for a month.
He has gone to Shanghai twice.
How long have been at this school?
Since two years . 改错:beenbeen deadbeen ago.For nullThank you
Bye-bye!
浙公网安备 33021202002483