周末父母现在完成时练习 (2)

2021年1月19日发(作者：将欲取之必先与之)
现在完成时练习
语法
1、结构：have（has）+动词的过去分词
否定句：主语+haven’t（hasn’t）+动词的过去分词
一般疑问句：have（has）+主语+动词的过去分词
2、动词的过去分词：规则变化（和过去时一样）
不规则变化（见书本不规则动词表）
3、用法：
1）表过去发生的某一动作对现在造成的影响或结果。
Eg: I have just cleaned my clothes.我刚洗过衣服。
（“洗衣服”是发生在过去的动作，对现在造成的结果是“衣服干净
了”。）
I have just had my breakfast.（对现在的影响：不饿）
通常与already,just, ever,yet,never,before等时间副词连用。
2）表示过去已经开始，持续到现在的动作或状态，也可能继续下去
的动作或状态。
*for+一段时间（延续性动词）eg: She has learned English for 3 years.
(但非延续性动词的否定形式也可以) eg: They haven’t
seen each other for 10 years.
*since+过去时间点（过去时动词）注意不能和一段时间连用
Eg: They have lived here since 3 years ago.(They have lived here since
2005.)
Since+句子（一般过去时）
Eg: We have been good friends since she moved to Nantong.

一、、用所给词的适当形式填空。
1、It __________ (rain) for three days.
2、I don’t know this old man. I __________ (meet, never ) her.
3、let’s go to the cinema. No, I _________(see, already) the film.
4、We __________(finish, not ) our homework yet.
5、Mum _____________(come, not) yet. She will be back in a minute.
6、I _____________(know) Lily for two years.
7、Have you __________( write) three letters this moring?
8、Zhang Hong __________(make) many friends since she came to
London.
9、__________ they __________(visit) the Great Wall?
Not yet.
10、Will the concert finish soon?
No, it ________ just __________ (start).
二、句型转换
1、They have already gone to school.（改为一般疑问句及否定回答）
__________ they __________ to school _________?
No, they ___________.
2、My father has read ten books about computers.(划线提问)