Grammar and usage
Police in America have stepped up their search for a boy who went missing.
2. People have shown great interest in his
disappearance due to sightings of alien visits…
3. I haven’t seen Justin since .
4. Some people in Dover also say that they
have seen aliens .
have not ruled out the possibility that Justin was taken by aliens .
6. …Peterson , who has taken charge of the case .
Present perfect tense
Review:
The Present Perfect Tense
Form(结构):
Summary:
have/has + done
Find out some sentences which are in the present perfect tense in the text.
Mr Zhang has just bought a new car, but he has had touble with motorists. When he returns home at night he always find that someone has parked a car outside his gate. Because of this, he has not been able to get his own car into this garage even once. He has to walk home after he parks his car. “ what’s the matter? Have you bought a car?”“ Yes, but…” Mr Zhang has put up a “ No parking” sign outside his gate, but it has not any effect.
has just bought
has had
has parked
has not been
Have you bought
has put up
1. The teacher in the black jacket has left .
2. We have studied English .
3. Kung Weizheng has already finished the homework .
4. He has had his lunch .
have seen the film of Titanic twice .
students have made great progress in reading .
Feng has just returned from Britain .
Extension 1
______ (study) English for about four years.
(live) in Houji Middle School since three months ago.
old man _____________(已经死了)for two years .
has been missing for two weeks.
6. I haven’t seen Guo Yi these days.
Extension 2
have studied
have lived
has been dead
Summary 2:
强调某一动作或状态从过去某一时间开始延续到现在且有可能继续下去用延续动词。通常和for, since. so far, by now, until now, these days, in the last ten years,引导的时间状语连用。
Drill 2
price _____recently, but I doubt whether it will remain so.
A went down, B will go down
C has gone down D was going down
2. In
现在完成时与现在完成进行时ppt课件 来自淘豆网www.taodocs.com转载请标明出处.