现在完成时专项语法讲练牛津深圳版广东省深圳市八年级上册英语.docx
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1、 现在完成时Grammar: 现在完成时(一)(一)定义: 1. 过去发生或已经完成的动作对现在造成的影响或结果。 My daughter has just gone out. Im sure weve met before. She has arrived. 2. 过去发生的动作或状态持续到现在。I havent heard from her these days. We havent seen you recently. They have been away for two years. She has been with us since Monday.(2) 结构:基本构成:have
2、/has + done 肯定句: We have visited a lot of places around the world. 否定句: We have not visited a lot of places around the world. 疑问句: Have you visited a lot of places around the world? 回 答: Yes, we have./ No, we havent.(三)动词过去分词的规则变化:(同过去式的规则变化)情况变化规则原形过去分词一般动词直接加-edvisitvisited以不发音的字母e结尾直接加-dlivelived
3、重读闭音节双写辅音加eddropdropped以辅音字母加y结尾先变为i, 再加-edstudystudied注意:动词过去分词的不规则变化(如:is/ambeen taketaken) 见附表。(四)标志的时间状语: 1. already, yet, never, ever, just, before 2. since+时间点, for+时间段 3. so far, once, twice, recently, lately, these days, in the past few years 注意:since和for的区别:since+时间点(如1993, last term, yeste
4、rday, the time I got there);since +时间段+agofor+时间段(ten years, a while, two days)现在完成时可以用来表示发生在过去某一时刻的,持续到现在的动作(用行为动词表示)或状态(be动词表示)常与for(+时间段),since(+时间点或过去时的句子)连用. for+时段since+过去一个时间点(译为:自从以来)since+时段+agosince+从句(过去时)It is+时段+since+从句(过去时)Mary has lived here for three days. Mary has lived here since
5、2014. Mary has lived here since three years ago. It is four years since Mary lived here. 1.现在完成时的含义之一是过去完成的动作对现在仍有影响,用以下四大标志词可以表达这种含义: * 以already, just和yet为标志 He has already got her help.他已得到她的帮助。He has just seen the film.他刚刚看过这场电影。He hasn't come back yet.他还没有回来。* 以ever和never为标志This is the best
6、film I have ever seen.这是我曾经看过的最好的一部电影。He has never been to Beijing.他从没有到过北京。* 以动作发生的次数为标志He says he has been to the USA three times. 他说他已经去过美国三次了。* 以so far(到目前为止)为标+beforeHe has got to Beijing so far.到目前为止他已到了北京。She has passed the examso far.到目前为止她已经通过了考试。1、 写出下列动词过去分词。原形过去式过去分词原形过去式过去分词invent_creat
7、e_decide_realize_study_try_stop_drop_be_have_do_go_leave_teach_think_come_write_know_eat_win_二、选用have或has填空。1. I _ visited the museum.2. _you ever been to Beijing?3. My mother _made a lot of apple juice.4. _he watched the film?5. Mrs Brown _bought some bread and milk. 三、用since和for填空。1) _two years 2)
8、 _ two years ago 3) _last month 4) _1999 5) _ yesterday 6) _4 oclock 7) _4 hours 8) _ an hour 9)_we were children 10) _she left here.11) He has lived in Nanjing _ the year before last.12) I have known him _ we were children. 13) Our teacher has studied Japanese _ three years.14) She has been away fr
9、om the city _ about ten years. 15) Its about ten years _ she left the city. 四、从括号内选择正确的单词或短语完成句子。1) I have _(already, yet) read this book.2) Have you _(did, done) your homework?3) He has worked in this company _(since, for) 2002.4) Have you ever visited Disneyland? No, Ive _(ever, never) visited it.
10、5) David _(is, has been) a student for 3 years.五、按要求写句子。1. The woman has found her bag.(1) _(改为否定句)(2) _ (改为一般疑问句并作否定回答)2. They have complained their homework.(1) _(改为否定句)(2) _ (改为一般疑问句并作否定回答)3. Has he cleaned the room?(1) _(作肯定回答)(2) _ (写出肯定句)4. Have they lost their way?(1) _(作否定回答)(2) _ (写出否定句) 六、
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