手机短信验证
几种时态的区别专题总结大全讲解与练习
1. 一般过去时和现在完成时
1）一般过去时只表示过去发生的动作或状态，常和表过去的时间状语连用，即仅谈过去，不关现在。I wrote a letter this morning. (只说明写了一封信的事实)
2）现在完成时表示过去发生的动作或状态，但和现在有联系，可能刚结束，也可能继续下去。不能和表过去的时间状语连用，译成汉语时可加“已经”。
I have written a letter this morning. (我已经写了一封信，有继续写第二封的可能，现在还是早上。)
2. 一般过去时和过去进行时
1）一般过去时侧重于说明发生某动作的事实。
It rained heavily last night.昨晚雨下得很大。(强调下雨，并不强调持续时间)
2）过去进行时侧重于强调某动作的持续过程或表示动作在进行。
It was raining cats and dogs last night昨晚整整一夜都在下倾盆大雨。(强调没停，一直持续)
3. 现在完成时和现在完成进行时
1) 现在完成时在含义上着重表示动作的结果。
I have read that book. (已读完)
2）现在完成进行时着重表示动作一直在进行，即动作的延续性。I have been reading that book all the morning.( 还没读完)
实战演练
用所给动词或根据中文提示填入动词的正确形式
1. 1)---Remember the first time we ____________________ (meet)?
---Of course. You _____________________ (study) in Beijing University then.
2) Cathy is taking notes of the grammatical rules in class at Sunshine School, where she _________________________ (study) English for a year.
2. 1) The government __________________ (build) two factories in this region since the end of last year.
2) The government ____________________(build) two factories in this region by the end of this year.
3. 1) It ___________ (be) ten years since we left school.
2) It ____________ (be) two years before we leave school.
4. They _______________________ (work) on the program for almost one week before I joined them, and now we ____________________ (still work) on it as no good results have come out so far.
5. The pen I ____________ (think) I _____________ (lose) is on my desk, right under my nose.
6. If their marketing plans succeed, they _______________ (increase) their sales by 20 percent.
7. She said that it ___________ (be) the second time she _______________ (see) the film.
8. I don’t really work here. I _________________ (just help) out until the new secretary arrives.
9. Look at the timetable. Hurry up! Flight 2039 _____________ (take) off at 18:40..
10. ---How are you today?
---Oh, _________________ (not feel) as ill as I do now for a very long time.
11. 1) My good friend _______________ (come ) from Guangdong.(是广东人)
2) My good friend _______________ (come ) from Guangdong last week.(从广东来)
12. 1) Where _____________ (be) you? (你在哪儿)
2) Where ____________ you ____________? (be) (你去了哪)
3) Where _____________ he ____________ (go)? (他去哪了)
13. 1) Mr. John ______________ (teach) English in China for two years. (不在中国了)
2) Mr. John ______________ (teach) English in China for two years. (也许仍在中国)
14. 1) I _____________________ (read) that book. (读过那本书了)
2) I _____________________ (read) that book all the morning.（一直在读那本书）
15. 1) When I got there, he __________________ the work (做完那工作了)
2) When I got there, he __________________ the work carefully (在认真地做工作)
3) When I got there, he __________________ the work (才要做工作)
答案：1. met, were studying; has been studying 2. has built; will have built 3. is; will be 4.Had been working; are still working 5. thought, had lost 6. will increase 7.was, had seen 8. am just helping
9. takes 10. haven’t felt 11.comes; came 12. are; have been; has gone 13. taught; has taught
14. have read; have been reading 15. had done; was doing; was about to do
