文档介绍：现在完成时
The Present Perfect Tense
. 我已经乘火车到达.
I have just arrived by train.
. 我还没有做完作业呢。
I haven’t finished / done my homework yet.
. Eric从来没去过上海。
Eric has never been to Shanghai.
Let’s see some examples.
现在完成时的基本句型:
肯定式:主语+ have/has + 过去分词
疑问式:Have/Has + 主语+ 过去分词?
否定式: 主语+ have/has + not + 过去分词.
做笔记!
现在完成时:
表示过去发生而现在有结果或影响的动作.
结构: have / has + p. p(过去分词)
一、动词过去式、过去分词的构成
1. regular form 规则变化
(1)finish—finished--finished play--played--played
(2)live--lived—lived move--moved--moved
(3)carry--carried--carried try-tried-tried ( 去y改i加ed)
(4)stop--stopped—stopped chat—chatted--chatted
2. irregular form 不规则变化
(1) AAA型:cut--cut--cut read--read--read
(2) ABB型:feel--felt--felt make--made--made
(3) ABC型:forget-forgot-forgotten see--saw--seen
(4) e--e run--ran—run
(5) AAB型:beat--beat--beaten
常与现在完成时
They have already arrived at the airport.
2)They haven’t arrived at the airport yet.
4)She has lived in Beijing since 2000.
5)We have stayed in Shanghai for a long time
already, yet
在现在完成时中
already 用于肯定句,并且置于居中或者句尾,译为已经…..
Have you eaten the apples yet? (疑问句)
“yet”用于句尾.
Yes, I’ve already eaten the apples. (肯定句)
‘already’用于句中或句尾.
No, I haven’t eaten the apples yet. (否定句)
or Yes, I’ve eaten the apples already. (肯定句)
yet 用于否定或疑问句,并且通常用于句尾, 译为还…..
you locked the door____?
A. already B. yet C. ever D. never
’s ____ seen the film Avatar.
A. already B. yet C. ever
3. David hasn’e to Window English .
A. yet B. already C. ever D. never
1. for + 时间段
Daniel has been there for 8 months.
I __________ (be) here for 5 years.
2. since(自从) + 时间点
Rex has been very tall since he was 13 years old.
I ________________ (know) Amy since two years ago.
have been
have known