You could tell your colleague instead of asking him directly which might be a little inappropriate,

如果不想过于直接地问他，因为这可能有点不合适，你可以这样问你的同事，

I wonder if 课堂 - SpeakingMax英语口语达人

You could ask him what type of food he likes, maybe fast food.

你可以问他喜欢吃什么，喜不喜欢吃快餐。

Do you 课堂 - SpeakingMax英语口语达人

You could use the "what do you" pattern in order to ask which article he wants to buy.

你可以用“What do you”句型来问男友他想买哪一个。

What do you 课堂 - SpeakingMax英语口语达人

You could use the "How about" pattern to offer the help.

你可以用“How about”句型问他需不需要你的帮助。

How about 课堂 - SpeakingMax英语口语达人