《Have you ever been to a museum?》PPT课件3

Grammar Focus

现在完成时：

表示过去发生或已经完成的某一动作对现在造成的影响或结果，或从过去开始一直延续到现在的动作或保存的状态。

结构： 主语+ have / has + 过去分词

She has taught in the school for ten years. 

I haven’t eaten anything since breakfast.

I have been to Fun Time Amusement Park.

... ... ...

区分 have been to / have gone to 

现在完成时态中:

have been to 和 have gone to 都是指已经去了某个地方，但是 have been to 强调的是曾经去了某个地方并回来了； have gone to强调的是去了某个地方还没有回来。

e. g. Have you ever been to Anqing? 

你去过安庆吗？

Yes, several times.  是的，去过几次。

— Where is Mr Wang?  王先生在那里？

— He has gone to Anqing. 他去了安庆。

... ... ...

1.I like Guilin. I ___ there twice. 

A. go      B. went      C. have gone      D. have been 

2.—— Where’s Li Lei? 

  —— He ___ Beijing. 

A. goes to                B. went to 

C. has gone to         D. has been to 

3. He went to Toronto two years ago, so he ___ Toronto for two tears. 

A. has been to          B. has gone to

C. has been in          D. has gone 

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现在完成时与一般过去时的区别 

一般过去时表示的动作或状态，可以是一次性的，也可以是经常性的，所表示的动作或状态与现在无关。现在完成时表示的动作或状态与现在情况有联系，侧重这一动作对现在所造成的影响。如：

I had supper an hour ago．

我一小时前吃的晚饭。（表示过去的动作）

I have just had supper．

我刚刚吃过晚饭。（强调对现在的影响---我不饿）

区分现在完成时（has/have done）与现在完成进行时（has/have been doing）

现在完成时有否定结构，现在完成进行时没有否定结构。

现在完成时可表示做完的时期以及已有的经验，但现在完成进行时不可以。

现在完成时强调对现在的影响。现在完成进行时强调过去那一段过程（对现在的影响）。

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《Have you ever been to a museum?》PPT课件6 Grammar Focus 现在完成时由主语＋have/has＋过去分词构成。其主要用法如下： 结构： 主语+ have / has + 动词的过去分词 一般疑问句：..

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