现在完成时讲解与练习ppt课件

1、现在完成时,1,现在完成时的含义,功能,表示过去发生的动作,对现在产生的影响,表示,到目前为止,已经完成的事情,动作发生在过去，一直,延续,到现在，还有可能,延续,到将,来,例如,I have finished my homework,我做完我的家庭作业了。,He has already come,他已经来了。,I have lived in China since I was born,我从出生的时候就一直住在中国。,2,现在完成时的结构,肯定形式：主语,have/has,过去分词,否定形式：主语,have/has+not,过去分词,一般疑问句,Have/has,主语,过去分词,肯定回答,Y

2、es,主语,have/has,否定回答,No,主语,have/has not,特殊疑问句：特殊疑问句,have/has,主语,过去分词,例如,Have you ever been to the US.,你去过美国吗,Yes, I have,是的，我去过。,No, I havent,不，我没去过。,3,现在完成时的标志词,already,已经,just,刚刚,yet,还没有,用于肯定句中，放在,have/has,之后,用于否定句中,ever,曾经,recently,最近,for,时间段,since,时间点,例如,动作或状态从过去一直持续到现在,I have,already,finished my

3、 homework,I havent finished my homework,yet,Mr. Smith has stayed here,for three months,4,现在完成时的时间状语,现在完成时的时间状语有,now, today, tonight, just, this,week/year/month, already, yet, recently, for,时间段,since,过去的时间点,etc,对现在完成时的时间状语提问用,how long,例如,I have had a dog,now,我现在有一条狗了。,We have learned about 3000 Engli

4、sh words,by the end,of this term,到上学期末我们已经学了,3000,个单词。,I havent heared from him,recently,最近我没收到他,的来信。,How long,have you stayed in China,5,关于现在完成时的一些区分,have been to,去过某地（已回来,常和,once,twice,never,等连用,have gone to,去了某地（还未回来,have been in,已经在某地，常与一段时间连用,例如：（比较,They have been in Chicago,They have been to C

5、hicago,They have gone to Chicago,have/has got,形式上是现在完成时，但是含义与,have/has,相同,例如,Have you got a pen-friend,6,关于现在完成时的一些区分,现在完成时与一般过去时的区别,例如,I have just finshed my homework,I just finished my homework,7,需要注意的两点,现在完成时句中,有表示一段时间的时间状语时，必须,使用延续性动词,例如,I have arrived here,I have been here for two hours,在以下句型中，

6、短暂性动词要转换成延续性动词,完成时态的肯定句,句中有,for,或,since,引导的，或其他种类的表示一段时间,的时间状语,8,非延续性动词转换成延续性动词的方法,1,实义动词转化成实义动词,9,非延续性动词转换成延续性动词的方法,2,转化成,be,形容词,介词,10,非延续性动词转换成延续性动词的方法,3,转化成,be,名词（词组,11,练习（一）单选,1. Tom_the CD player for two weeks,has lent,B. has borrowed,C. has bought,D. has had,2. -Have you ever_Beijing to see th

7、e Forbidden City,Yes, I have,A. went to,B. gone to,C. been in,D. been to,3. I wont go to the concert because I _my ticket,A. lost,B. dont lose,C. have lost,D. is coming,12,练习（一）单选,6,How long have you _ this book,A,bought B,borrowed C,had D,lent,7. Miss Brown _ to the Great Wall twice,A,have been B,h

8、as been,C,have gone D,has gone,8. His grandpa _ for two years,A,was died B,has been dead,C,was dead D,has died,13,练习（二）用所给词的适当形式填空,1. I_ already _(see) the film,I_(see) it last week,2,_he_(finish) his work,today,Not yet,3,_you_(be) to Hong,Kong,Yes, I_(be) there twice,14,练习（二）用所给词的适当形式填空,4,Wheres Li

9、 Ming,He_(go) to the teachers office,5.So far I_(make) quite a few friends,here,6,How long_ the Wangs,_(stay) here ,For two weeks,15,练习（三）句型转换,每空一词,1. I have been to Macau before.,改为否定句,I_ _been to Macau before,2. He hasnt come to school,线部分提问,_ _ _he come to school,because hes ill.,就划,3. He has lea

10、rned English for 5 years.,就划线部分提,问,_ _ _ _learned English,16,练习（三）句型转换,每空一词,4. I bought a new bike just now.,用,just,改写,I_ just _a new bike,5. We began to learn English three years ago.,改为,同义句,We_ English _three years,17,练习（四）用,for,或,since,填空,1. Jill has been in Ireland_Monday,2. Jill has been in Ireland_three days,3. My aunt has lived in Australia_15,days,4. Margaret is in her office. She has been,there_7 oclock,18,练习（四）用,for,或,since,填空,5. India has been an independent country_1974,6. The bus is