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1、Unit 9 Wheels 语法篇_1、 掌握过去完成进行时的用法。2、掌握现在完成进行时与现在完成时的区别。一. 现在完成进行时1. 构成：现在完成进行时由“have/has been + 动词的现在分词”构成，第三人称单数用has，其他各种人称用have。2. 用法：表示动作从过去某时开始并且一直持续到现在，并由可能持续下去。这个动作可能刚停止，也可能仍继续进行下去，常与延续性动词连用，并常带有表示动作起讫时间的状语，如since last week, since 1992等或由since引导的时间状语从句；也可以带有时间表示时间长度的状语，如for an hour, for a few
2、days, these days等。I have been watching TV the whole evening. 我整个晚上一直在看电视。Tom has been working hard since the new term began. 自从新学期开始，汤姆一直在努力学习。表示到目前为止的一段时间内动作时断时续、反复发生。You have been telling me not to be late all the way. 一路上你反复告诉我不要迟到。表示动作刚刚结束，一般不再继续，有时会指出结果。I have been playing ping-pong all the mor
3、ning, so Im sweating. 整个上午我一直在打乒乓球，所以浑身是汗。Ive been painting the door, so my hands are dirty. 我一直在漆门，所以手很脏。表示某种感情色彩。You have been deceiving me. 你一直在骗我。误区警示：某些不能用于进行时态的动词同样不能用于现在完成进行时，但可以用于现在完成时，如：see, hear, know, like等。现在完成进行时多用延续性动词瞬间性动词（词组）go, get up, come, marry, finish等不能用于现在完成进行时。二. 现在完成进行时与现在完成
4、时的区别现在完成进行时是兼有现在完成时和现在进行时二者基本特点的时态。由于它有现在完成时的特点，所以它可以表示某一动作对现在产生的结果或影响，由于它由现在进行时的特点，所以它也可以表示某一动作的延续性、临时性、重复性、生动性乃至感情色彩。现在完成进行时和现在完成时的区别如下：时态基本语法功能动作的反复感情色彩现在完成进行时强调动作的持续可表示动作的反复可表示强烈的感情色彩现在完成时强调动作对现在的影响或产生的结果不表示动作的反复一般不表示感情色彩试比较：He has written a letter. 他写了一封信。（信已写好）He has been writing a letter. 他一直
5、在写一封信。（一直在写信，尚未写好）Have you met him recently? 你最近见过他吗？（不表示反复）Have you been meeting him recently? 你最近常和他见面吗？（表示反复）I have waited for you for two hours. 我等了你两个小时。（表示事实）I have been waiting for you for two hours. 我一直等了你两个小时。（表示不满）例1. The manager _ _ the workers how to improve the program since 9 am.A. has
6、 toldB. is tellingC. has been tellingD. will have told例 2. The girl has a great interest in sport and _ _ badminton classes twice a week over the last three years.A. tookB. is takingC. takesD. has been taking例3.-I remember you were a talented pianist at college. Can you play the piano for me?-Sorry,
7、 I _ _ the piano for years.A. dont playB. wasnt playingC. havent playedD. hadnt played例4. When I first met Bryan I didnt like him, but I _ _ my mind.A. have changedB. changeC. had changedD. would change例5. Tom _ _ in the library every night over the last three months.A. worksB. workedC. has been wor
8、kingD. had been working例6.（2015 福建高考）-Where is Peter? I cant find him anywhere.-He went to the library after breakfast and _ _ his essay there ever since.A. wroteB. had writtenC. has been writingD. is writing例7.（2014 江西高考）-Tony, why are your eyes red?-I _ _ up peppers for the last five minutes.A. cu
9、tB. was cuttingC. had cutD. have been cutting例8.（2014 湖南高考）Since the time humankind started gardening, we _ _ to make our environment more beautiful.A. tryB. have been tryingC. are tryingD. will try基础演练一. 用括号里所给动词的适当形式填空。1. You know, I (look) for a job for three months, and this is my first formal i
10、nterview.2. The little boy is dirty all over because he (play) in the mud all the morning.3. He (read) in the library out since it opened this morning.4. Here he is! We (wait) anxiously for him since last night.5. She has (live) here ever since she was ten.6. Both of them (be) in Hong Kong for ten d
11、ays.7. Both of them (come) to Hong Kong ten days ago.二. 单项选择。1. In order to find the missing child, villagers _ _ all they can over the past five hours.A. didB. doC. had doneD. have been doing2. She was surprised to find the fridge empty; the children _ _ everything!A. had been eatingB. had eatenC.
12、have eatenD. have been eating3. When Alice came to life, she didnt know how long she _ _ there.A. had been lyingB. has been lyingC. way lyingD. has lain4. I have to see the doctor because I _ _ a lot lately.A. have been coughingB. had coughedC. coughedD. cough5. -Hello, I didnt know you were in Amer
13、ica. How long _ _ here?-About one year.A. have you beenB. areC. wereD. had you been6. My brother is an actor. He _ _ in several films so far.A. appearsB. appearedC. has appearedD. is appearing7. The telephone _ _ four times in the last hour, and each time it _ _ for my roommate.A. has rung; wasB. ha
14、s been ringing; wasC. had rung; wasD. rang; has been8. -How is your grandfather?-My grandfather _ _for two years.A. diedB. has diedC. had been diedD. has been dead巩固提高一. 用括号里所给动词的适当形式填空。1. Half an hour _ _ _ (pass) since the train _ _ _ (leave).2. Mary _ _ _ (lose) her pen. _ _ _ you _ _ _ (see) it here and there?3. _ _ _ you _ _ _ (find) your
