Grammar 一等獎(jiǎng)-精講版課件

1、Grammar and usagethe Present Perfect Tense & the Present Perfect Continuous Tense現(xiàn)在完成時(shí)與現(xiàn)在完成進(jìn)行時(shí) Form:have/has+done the Present Perfect Tense現(xiàn)在完成時(shí)Do you know when we should use the present perfect tense? We use the present perfect tense to talk about actions that were completed only a short time ago (

2、1):The boys are tired. They _ (just play) a ball game.(Connection with the past: The boys played a ball game. Connection with the present: The boys are tired.) have just playedWe use the present perfect tense to talk about things that happened in the recent past, but are connected to the present.(2)

3、:The boy is very happy.The boy _(catch)a bird.(Connection with the past: The boy caught a bird. Connection with the present: The boy is happy. )has caughtWe use the present perfect tense to talk about something that started in the past, and is still happening now. came has lived _ past now future (3

4、):has lived Daniel _ (live) in Beijing since he came to China.(Connection with the past: Daniel came to China. Connection with the present: Daniel is living in China.) We can also use the present perfect tense for repeated actions. (4): I went to Egypt in 1986. I went to Egypt in 2004. I _ (be) to E

5、gypt twice. have been2. What is the basic structure of the present perfect tense?subject + auxiliary verb (has/have) +done+ objectsubjectaux. vmain vobject+I haveseenET.+You haveeatenmine._Shehasnotbeento Rome._Wehavenotplayedfootball.?HaveyoufinishedIt?HashedoneIt?3.We often use it with time expres

6、sions.Such as : already ever for just lately never recently since yetQ1. Whats the difference between already and yet?e.g. The boy has already come here.I havent heard anything from him yetTip: Already is for affirmative statements;Yet is for negative statementsComplete the following sentences with

7、the proper tense.1 We _ (study) English for about five years.2 They _ (live) in the south since their daughter was born.3 I _ (read) your article three times. Its well written.4 The student _ (finish) her homework already. 5 Eric _ (go) back to his hometown today. 6 The police _ (just finish) search

8、ing the area.have studiedhave livedhave readhas finishedhas gonehave just finished現(xiàn)在完成時(shí)與一般過去時(shí)的區(qū)別：一般過去時(shí)表示發(fā)生在過去的動(dòng)作，和現(xiàn)在無關(guān)；現(xiàn)在完成時(shí)則強(qiáng)調(diào)某一發(fā)生在過去的動(dòng)作與現(xiàn)在的關(guān)系，如對(duì)現(xiàn)在產(chǎn)生的結(jié)果或影響等。He _ (work) in the city for ten years.has worked完成下列句子：I _(see) this film yesterday. （強(qiáng)調(diào)看的動(dòng)作發(fā)生過了）I _ (see) this film. （強(qiáng)調(diào)對(duì)現(xiàn)在的影響，電影的內(nèi)容已經(jīng)知道了）He

9、_ (be) in the League for three years. （在團(tuán)內(nèi)的狀態(tài)可延續(xù)）He _ (join) the League three years ago. （強(qiáng)調(diào)加入的動(dòng)作發(fā)生在過去）sawhave seenhas been joined現(xiàn)在完成時(shí)與一般過去時(shí)常用的時(shí)間狀語：一般過去時(shí)常與具體的時(shí)間狀語連用，而現(xiàn)在完成時(shí)通常與模糊的時(shí)間狀語連用，或無時(shí)間狀語。 一般過去時(shí)的時(shí)間狀語：yesterday, last week，ago, in1980, in October, just now, in the past等，皆為具體的時(shí)間狀語。 現(xiàn)在完成時(shí)的時(shí)間狀語：for,

10、since, already, yet, so far, up to now, ever, never, recently, lately, just, in the past years,等，皆不確定的時(shí)間狀語。用于現(xiàn)在完成時(shí)的特殊句型 1）It is the first / second time that結(jié)構(gòu)中的從句部分，用現(xiàn)在完成時(shí)。例如： It is the first time that I _ (visit) the city. This is the first time （that） I _ (hear ) him sing.注意：It was the third time

11、that the boy _ (be) late. 2）This is +形容詞最高級(jí)+that結(jié)構(gòu)，that 從句要用現(xiàn)在完成時(shí)。例如： This is the best film that I _ ever _ (see). 典型例題（1） Do you know our town at all? No, this is the first time I _ here. A. was B. have been C. came D. am coming （2） Have you _ been to our town before? No, its the first time I _ her

12、e. A. even, come B. even, have come C. ever, come D. ever, have come have visitedhave heard had been haveseenBD一般過去時(shí)還是現(xiàn)在完成時(shí)？1 They _ (move) to the south in 1990 and _ (live) there since then.2 Eric _ (leave) home last year and _ (just come) back.3 Justin _ (be) away from home for several days. He _(

13、disappear) last Friday.4 They _(buy) this house three years ago and they _ (live) here since then. 5 My brother _ (go) to see my grandpa last week. He _ (visit) him three times this month.movedhave livedlefthas just comehas beendisappearedboughthave livedwenthas visitedRead the diary entry on Page 8 an