京京想给他的爸爸买件衬衫，于是来到了shopping mall.

    Jingjing: I want to buy a shirt for my father.

    Cashier: What color do you want?

    Jingjing: I want a blue shirt.

    Cashier: How do you like this one?

    Jingjing: Well, I don't like it. I want a shirt without buttons.

    Cashier: How about this one?

    Jingjing: Oh, it looks great. I like it a lot. How much is it?

    Cashier: It's 110 dollars.

    Jingjing: Oh, it's too expensive.

    Jingjing: I have only 30 dollars. Show me a cheaper one, please.

    Cashier: OK, what about this blue one?

    Jingjing: That's good. I'll take it.

    同学们，你们知道对话中a shirt with sleeves, a shirt without buttons的含义吗？他们分别是“带袖的衬衫”和“无纽扣的衬衫”。with, without 是一组相对应的反义词，分别表示：“有”，“没有”。Are you clear?