请问has怎样运用？什么意识？

1.has-有，have的第三人称形式。
比如表述他有什么什么东西的时候：He has a watch.She has a good time.

2.当表述完成时态时，has是作为have的第三人称形式。
He has done the homework just now.

has: [ hæz; həz, əz, z ]

v. 有,吃,让...作
conj. 有

例句与用法:
1. He has no friend other than you.
他除你之外就没有别的朋友了。

2. He has eaten a whole box of chocolates.
他吃了一整盒巧克力。

3. Listening to the music has a calming influence on her.
听音乐对她起了一种镇静的作用。

4. The invention of modern xerography has made our work much easier.
现代复印术的发明让我们的工作轻松多了。

5. My husband has several shirts of different colors.
我丈夫有好几件颜色不同的衬衫。

6. He has a deep-seated resentment at the way he has been treated.
他因受到如此对待而深怀怨恨。

7. He has fooled a lot of people into believing he is a rich man.
他骗了许多人，让人相信他是个富翁。

8. Dictionary-making has not been his exclusive employment.
编字典一直都不是他唯一的工作。 <