牛津高中英语 现在完成时.ppt

1、Grammar and usage,现在完成时(Present Perfect Tense) 现在完成进行时(Present Perfect Continuous Tense),the Present Perfect Tense,构成: have/has + 动词过去分词,基本概念,表示动作发生在过去某个时间，但对现在产生影响。,Mary has returned the book. I have finished the homework. I have been to Shanghai three times.,1.表示从过去某一时刻开始一直持续到现在的动作或状态.常带有for,since

2、,in the past,in the last,so far等表示一段时间的状语。 I have studied English for three years. 我学习英语三年了。,基本用法,2. 表示说话前发生过一次或多次的动作，常带twice, three times, ever, never 等时间状语。 Some villagers say that they have seen UFOs many times. I have never been there.,already 用于肯定句而 yet 用于否定句。 2.通常for + 一段时间 而since + 一个点时间。 3.

3、固定的特殊句型： 1).It is (has been) +一段时间 +since-clause. 2)This (That/It) is the first (second) time + that-clause (现在完成时). 3)This (That/It) is the best/ finest /most interesting + that-clause （现在完成时）.,用法3,Lets practice,1.Daniel _ (live) in Beijing since he came to China. 2.The boys are tired. They _ (just

4、 play) a ball game. 3. I went to Egypt in 1986. Then in 2004 I went there again. I _ (be) to Egypt twice.,has lived,have just played,have been,4.-_it ever _ (snow) in Hong Kong? -No, it _ never _ (snow) there. 5.My uncle said that he would telephone me but I_ (not hear) from him so far.,Has,snowed,h

5、as,snowed,have not,We have been learning Unit 1.,Present Perfect Continuous Tense 构成： have/has + been + doing,The girl started having dinner five minutes ago. She is still having dinner now. The girl _ (have) dinner since five minutes ago.,has been having,The man started working half an hour ago. He

6、 is still working now. The man _ (work) in the field for half an hour.,has been working,基本概念,表示过去的动作持续到现在，这个动作可能仍然在进行，也可能已停止。 I have not been sleeping well since I returned home. _ past present,not being able to sleep well,Im still not sleeping well.,I returned home.,Why, Jack, you look so tired! We

7、ll, I _ the house and I must finish the work tomorrow. was painting will be painting have painted have been painting,D,1. 表示过去开始的动作刚结束并在某种情况下与现在有联系(一直延续到说话结束）。 Kelly: Sorry Im late. Have you been waiting long? Mavis: Yes. Ive been waiting for an hour. _ past One hour ago Present,Mavis started waitin

8、g for Kelly.,Kelly arrives.,基本用法,2.表示动作的重复，指断断续续，而非一直不停。,We have been discussing the matter several times this year. 我们今年已经数次讨论那件事情了。 She has been phoning Jim every night for the past two weeks. 两个星期以来她每天都给吉姆打电话。,Weve spent too much money recently. Well, it isnt surprising. Our friends and relatives

9、 _ around all he time. are coming had come were coming have been coming,D,He has read the book. He has been reading the book.,1. 现在完成时和现在完成进行时都表示动作从过去开始，但现在完成时可表示事件或动作刚结束，而现在完成进行时则强调动作仍在继续。,现在完成时和现在完成进行时的对比：,Li Jia _ (read) a book about Stonehenge. (She finished reading the book.) Li Jia _ (read) a

10、book about Stonehenge. (She is still reading the book.),has read,has been reading,2.表示状态的动词：be,have,exist等；表示感情的动词：like,hate,love等；表示感觉的动词：see,hear,know,feel,sound等，不能用于现在完成进行时，但可用于现在完成时。,They have known each other for ten years. 他们已经认识十年了。,They have been married for twenty years. 他们结婚已经二十年了。,Practi

11、ce,1.You dont need to describe her. I _ (meet) her several times. 2.Since she left home, I _ (not, sleep) at all well. 3.The price _ (go) down, but I doubt whether it will remain so. 4.When I _ (study) the book Ill write a report on it. 5.I wonder why Jenny _ (not, write) us recently. We should have

12、 heard from her by now.,have met,havent been sleeping,has gone,have studied,hasnt written,( ) 1. Although he has lived with us for years, he _ us much impression. A. hadnt left B. didnt leave C. doesnt leave D. hasnt left,Multiple choice:,D,( ) 2. How can you possibly miss the news? It _ on TV all day long. has been B. had been C. was D. will be,Multiple choice:,A,Multiple choice:,( ) 3.- _ Dad and Mum _ married? A. How long were, being B. How long, have C. How long have, bee