Preposition 对 （part.1)

对 (duì) can be used as a preposition to indicate "to" or "towards" an object or target. The structure is 对 + Object + Verb Phrase. For example, 

• 他对人很有礼貌。He's very polite to others. 
• 他对这件事儿不太清楚。He was not familiar with this matter. 
• 他对音乐很感兴趣。He is interested in music. 
• 她对画画儿很着迷。She's very fascinated with painting.

Here are some set phrases of 对
对……来说  for... [a person]

• 对我来说，川菜太辣了。 Sichuan food is too spicy for me. 
• 对他来说，数学很容易。 Math is easy for him.
• 对你来说，你最喜欢什么运动？What's the favorite sport to you?

对...感兴趣  (Duì... Gǎn xìngqù, to be interested in...)

• 他对中文很感兴趣。He is interested in Chinese.
• 她对唱歌很感兴趣。She is interested in singing. 
• 你对川菜感兴趣吗？Are you interested in Sichuan food?

对···的印象   (Duì... De yìnxiàng, the impression on the object)

• 你对中国的印象怎么样？What's your impression about China?
• 他对小张的印象很好。He has a very good impression about Little Zhang. 

Please translate the following sentences by using 对 structure.

1. He smiles at me. 
2. He said hello to her. 
3. Chinese is very interesting to him.
4. Who is interested in playing basketball?
5. He has a very good impression about Buffalo.