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1、Grammar and usagePresent perfect tense and present perfect continuous tense(2)step 1:Learning aims(学习目标)1.To handle some exercises about present perfect tense and present perfect continuous tense.2.To distinguish some tenses like present perfect tense and simple past tense.3.To acquire some skills i
2、n doing exercises of grammar.Read the introduction and comparison of the two tenses on your learning-plan.Step 2:Guidance to Self-study A.Finish exercise A on page 11.B.Complete the following sentences with the right form of the verbs given.1.You know,I _(look)for a job for three months,and this is
3、my first formal interview.2.This is the first time I _(see)the film.3.I am tired now,for I _(work)for five hours without a break.4.Here he is!We _(wait)anxiously for him since last night.5.Great changes _(take place)in this village over the past ten years.Step3:self-learning test:have been lookingha
4、ve seenhave been workinghave been waitinghave taken placeStep 4:Explanation and expansion（1）过去时表示过去某时发生的动作或单纯叙述过去的事情，强调动作，与现在无关；现在完成时为过去发生的，强调过去的事情对现在的影响，强调的是影响，与现在有关系。一般过去时的时间状语：yesterday,last week,ago,in 1980,in October,just now共同的时间状语：this morning,tonight,this April,now,once,before,already,recent
5、ly,lately现在完成时的时间状语：for,since,so far,ever,never,just,yet,till/until,up to now,in the past ten years,always典型例题：My father _(work)as a painter for about five years,but now he is a teacher.A.worked B.has workedB.C.works D.had worked注意：for+一段时间未必用完成时，如：He has worked in this factory for five years.He wil
6、l stay in London for two years.He was a doctor in the countryside for ten years,and now works in a small city.比较练习 1.-Where _you _(put)the book?I cant see it anywhere.-I _(put)it right here.But now its gone.A.did;put;put B.have;put;put C.did;put;have put D.have;put;have put2.We havent heard from Jan
7、e for a long time.What do you suppose _ to her?A.was happening B.happens C.has happened D.happened 3.Hello,I _ you were in London.How long _ here?A.dont know;were you B.hadnt known;are you C.havent known;are D.didnt know;have you been 比较练习4.Im glad to tell you that we _ the work in less time than we
8、 _ expected to.A.finished;were B.have finished;are C.have finished;were D.had finished;were 5.It _ that pleasant music keeps people from becoming tired at their work.A.finds B.has found C.was found D.has been found 6.When I was at college I _ three foreign language but I _ all except a few words of
9、each.A.spoke;had forgotten B.spoke;have forgotten C.had spoken;had forgotten D.had spoken;have forgotten It is(has been)+一段时间+since 从句:It has been five years since I came to this school.This(That/It)is the first(second.)time that+完成时:It is the first time that I have visited the city.This is+形容词最高级+t
10、hat 结构:This is the best film that Ive(ever)seen.2.常用现在完成时的句型:1.他在这所学校教了5 年书，而现在是一位有名的律师。_2.这是我第一次与外国人交谈。_3.我整个早上都在打扫房间，而现在还没有完成。_Instant exercises:He was a teacher in this school for five years and now he is a famous lawyer.This is the first time that I have spoken to foreigners.I have been cleaning
11、 the room the whole morning,but I havent finished yet.Practice makes perfect1.All these years they are contributing articles to our magazine.2.I have been drinking five cups of coffee this afternoon.3.What have you been doing before you left Oxford?4.Its a good job.Have you done it all by yourself?5.Its a long time since you come to see me.6.Alice didnt see much of Henry lately.7.Im glad to tell you that you passed the exam.A.Correct the following sentences.have beendrunkhadDid you docamehasnt seenhave passed