首　页
说　明
广　告
免费下载
联络我们
时　态 （Tense） YanKang 主持
现在完成时 Present Perfect

形式：has 或 have + 过去分词。

意义：过去发生的事情，与现时持续相关。比如：
Tom has lost his key.这句话的意思是，Tom不单丢了钥匙，而且到现在为止，钥匙仍然处于遗失状态--如果已经找到，请用过去式表达。

用法包括：1，谈论近期或刚刚发生的事件。
A) Do you want to see the new movie "Zero"?
B) I've already seen it. 注，这里有个already.
I have just had a delicious meal. 注：just.





 






 

学个词

语音学

简单对话

 常用词汇

基础语法

试题		 2，谈论一般性的经验。 I have visited Sydney, but I have never been to Paris.

3，谈论发生在过去一直未曾改变的事件。 I have studied English since I started secondary school.

4，指涉未来： You can leave as soon as your passport has been checked.
"Can I borrow your ladder for a moment?"" No, I'm using it. You'll have to wait until I've finished."　下页