注册 登录  
 加关注
   显示下一条  |  关闭
温馨提示!由于新浪微博认证机制调整,您的新浪微博帐号绑定已过期,请重新绑定!立即重新绑定新浪微博》  |  关闭

深圳英语家教

深圳潜龙家教 www.szqljj.com

 
 
 

日志

 
 
关于我

我来自山清水秀,人杰地灵的湖南,从事英语家教教学,追求卓越人生,真情待人,热心助人,欢迎八方来客光临!

网易考拉推荐

现在完成时总结  

2010-03-09 14:20:08|  分类: 英语题型 |  标签: |举报 |字号 订阅

  下载LOFTER 我的照片书  |

   现在完成时总结

     现在完成时表示1)过去发生或已经完成的动作或存在的状态对现在造成的影响或结果.(即它的"完成用法")e.g. I have just cleaned the classroom.  2)过去已经开始,一直持续到现在的动作或状态。注意:此时动作可能还要继续。(即它的"未完成用法")。 E.g. He has lived in Beijing for ten years.
      其结构是“have/has+过去分词”。过去分词的变化分规则与不规则两种。规则变化与过去式相同,不规则变化需要另记。
     它的否定句是在have/has后边加not,变一般疑问句是把have/has提前。E.g. I have ridden a horse.  I have not ridden a horse.  Have you ridden a horse?
     它的时间状语通常为already, just, yet, ever, never, before等。另外还可和since+表过去的时间点,for+时间段连用。
    做题时常见错误如下:
  一、易丢掉have/has
  例:He taken (take) the medicine before.
    答案:has taken
    解析:have/has 为助动词,起构成时态的作用,是不能省略的。我们可以这样记:“现在完成时态中,have/has 不可缺。”
  二、have与has易用混
    例:I has never heard (hear) of that before.
    答案:have heard
    解析:现在完成时与一般现在时一样也有单三人称的变化,当单三人称作主语时用 has, 一般人称作主语时用have.

三、延续性动词与短暂性动词易弄错

       例:She has left (离开) for 2 hours.

   答案:has been away

    解析:在肯定句中,与since或for引出的时间状语连用的是延续性动词,不能是短暂性动词,但在否定句中短暂性动词也是可以的。E.g. I haven't bought clothes for one year. 在此题中leave是短暂性动词,不能与for+时间段连用,须把它改成相应的延续性动词。如stop be over等。此题中leave要改成be away。这两种词的转换是学习现在完成时需要注意的。

专项练习:

一、单选

1 You have _____ a tall young man.

 A grown  B grown  into  C grown us  D grown up

2 He has ____ the watch for a year.

 A buy  B bought  C have  D had

3 Has your brother _____ the dog?

 A kept in  B fed  C fed on  D kept on

4I _____this book for two weeks, I have to return it now.

A borrowed  B have  borrowed   C kept  D have kept

5 Have you ever _____to the Great Wall? It's very beautiful.

 A gone  B been  C went  D go

6 Her brother _____the Party since 1978.

  A joined  B has joined  C has been in  D was in

7 The Greens _____many places of interest since they came to China.

 A will visit  B visited  C have visited  D visit

8 I'm sorry, I ____ your name.

 A had forgotten  B forgot  C have forgotten  D forgotten

9 The bookshop _____ for eight years.

 A has been open   B has been opened   Chas opened   D has open

10 We have       all the paper so we need to buy some.

 A used up  B made of   C filled with  D hunted for

11 The flower I ____grown up.

 A planted has   B planted have   C has planted   D have planted

  答案:1B  2 D  3 B  4D  5 B  6 C  7 C  8 C  9 A   10 A   11 A

二、填空

1 Have you ever ______(take) a train?

2 It _________(be ) more than three years since Jim ______(leave) here.

3 Have you _____(make)friends with your new classmates yet?

4 I _______(have) my lunch and I'm not hungry now.

5 Jim has never seen a panda, _____he?

6 We ______(be) good friends since we met at school.

7 We can't find him anywhere. Perhaps he______(go) home.

8 He _____(read) the book before.

9 Mr. Green _____(teach) us a lot about social studies since September.

10 I _____never____ (meet) her sister before.

答案:1 taken   2 has been, left   3made  4 have had   5 has 6 have been   7 has gone   8 has read   9 has taught   10 have met

 四、have been to与 have gone to 易弄混

    例:我去过北京。

    I have gone to Beijing.

    答案:I have been to Beijing.

    解析:"have been to+地点" 是表示曾去过某地,但此刻不在那儿(即在说话的地方)。而"have gone to+地点" 是表示去某地了,此刻在路上或已经到了那个地方(即不在说话的地方)。注意:这两个句式后接副词时,需省to。E.g. He has gone there.

    五、 忘记把already变成yet

    例:I have already finished my homework.(变一般疑问句)

        Have you already finished your homework?

    答案: Have you finished your homework yet?

    解析:现在完成时态中,肯定句中有already,变否定句或疑问句时通常要改为yet.

    六、在条件、时间状语从句中用一般现在时表示将来

  例:I'll go with you when I finish(finish) my homework.

    答案:have finished

    解析:在条件、时间状语从句中表示将来完成的动作,用现在完成时。但注意,此时表示这动作将在另一动作之前完成,若两动作同时发生,或几乎同时发生,则一般不用现在完成时。

    另外,现在完成时易与一般过去时弄混,前边已经讲过,这里不在重复.

  评论这张
 
阅读(801)| 评论(0)
推荐 转载

历史上的今天

在LOFTER的更多文章

评论

<#--最新日志,群博日志--> <#--推荐日志--> <#--引用记录--> <#--博主推荐--> <#--随机阅读--> <#--首页推荐--> <#--历史上的今天--> <#--被推荐日志--> <#--上一篇,下一篇--> <#-- 热度 --> <#-- 网易新闻广告 --> <#--右边模块结构--> <#--评论模块结构--> <#--引用模块结构--> <#--博主发起的投票-->
 
 
 
 
 
 
 
 
 
 
 
 
 
 

页脚

网易公司版权所有 ©1997-2017