《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.
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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。
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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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