内容正文:
衔接点01现在完成时(一)
一、现在完成时的概念。
①表示过去发生的动作对现在造成的影响或结果
She has been ill for three days. (她病了三天了。)
② 表示从过去某一时间开始一直持续到现在的动作或状态。
We've known each other since we were children. (我们从小就认识。)
I have been a member of the Party for 10 years.
二、构成:”助动词have, has + 过去分词”
现在完成时态的肯定句、否定句和疑问句形式(以work为例):
人称
肯定
否定
疑问
回答
第一人称
I have seen the UFO.
We have travelled around the world.
I haven’t seen the UFO.
We haven’t travelled around the world.
Have you seen the UFO?
Have you travelled around the world?
Yes, I have./ No, I haven’t.
Yes, we have./ No, we haven’t.
第二人称
You have been to England.
You haven’t been to England.
Have you been to England?
Yes, I/we have.
No, I /we haven’t.
第三人称
He/She has been to Beijing.
They have given concerts all over the world.
He/ She hasn’t been to Beijing.
They haven’t given concerts all over the world.
Has he/ she been to Beijing?
Have they given concerts all over the world?
Yes, he/she has.
No, he/she hasn’t.
Yes, they have.
No, they haven’t.
注:规则动词的过去分词的构成与过去是相同,不规则动词的过去分词见附表。
三、动词的过去分词构成规则
(1) 规则变化
1 大部分动词在词尾直接加-ed
clean cleaned help helped
2 以不发音的e结尾的,直接加-d
like liked live lived
3 以辅音字母+y结尾的单词,变y为i再加ed
try tried study studied
4 重读闭音节词尾只有一个辅音字母的,需要双写最后这个辅音字母再加-ed.
plan planned stop stopped
(2) 不规则变化
see seen find found
需根据不规则变化表进行专门记忆
随堂练习
写出下列单词的过去分词形式
work _________ finish ___________ arrive___________
change_________ see___________ have___________
marry__________ visit__________ miss___________
prefer__________ do___________ hear____________
live____________ clean________ study___________
meet___________ be __________ climb___________
plan____________ take_________ stop____________
keep____________ buy_________ spend____________
learn___________ forget__________ bring____________
四、have been in, have been to 与have gone to 的