课件12张PPT。现在完成时有以下的用法：
结束：表示现在刚完成的动作。
经验：表示过去某时到现在的经历体验。
继续：表示过去持续到现在的动作或状态。
have ( has ) + 过去分词 I have read the book already.
The bus has just left.
Have you finished your homework yet ?
No, not yet.= ( I haven’t finished yet. )
She has lost her pen.
* she lost her pen yesterday.结束：表示现在刚完成的动作。经验：表示过去某时到现在的经历体验。What’s the best gift Joe has ever received ?
Have you ever been to the aquarium ?
I have been to the zoo a lot of times.
I have never been to Edinburgh.
We have met him somewhere before.Have you ever studied …Have you ever traveled …Have you ever said …Have you ever helped …Have you ever lived …Have you ever argued …你和… 一起学习过吗？你去过 … 其他省吗？你说过 … 的话吗？你帮助过 … 人吗？你在… 生活过吗？你和… 争吵过吗？
