内容正文:
三
现在完成时
价价的
·1.现在完成时的构成
·2.现在完成时的各个句型
·3.现在完成时的主要用法
·4.动词的过去分词
·5.现在完成时的标志词
●6.for和since的区别
.7.have been to 5have gone to
个
•1.构成:
,have has
done
个
2.例句:
I have already had lunch.
Have you had lunchyet?
Yes,I have.
No,I haven't.
I haven't had lunch yet.
肯定句:
主语+have/has done
疑问句:
Have/Has+主语+done
否定句:
主语+have/has not
done
•3.用法:
•1.动作发生在过去,对现在造
成的结果或者影响。
Someone has turned off
the light.It's so dark.
•2.动作发生在过去,并一直延
续到现在,甚至还有可能一直延
续下去。
.I have lived here for 3
years.
·He has taught English
《since2001
•3.表示人曾有过或者到目前为
止从未有过的经历。
·I have ever been to the
Summer Palace.
.I have never had a car.
4.动词的过去分词:
规则变化:
l,直接加ed(worked,played)
2.以e结尾(lived,hoped)
3.以辅音字母+y结尾(studied,copied)
4,以辅音字母结尾的重读闭音节结尾(stopped,dropped)
不规则变化见教材P144
5现在完成时的标志词:
already,
never,
ever,just,yet,
up
to now,
so far,
these days,
since,
for a long time