对话中的应用：
A: Mr. Jackson is so hard on us.
A：杰克逊先生对我们那么严厉。
B: He may appear so, but he has his heart in the right place and he's ready to help anyone in trouble.
B：他也许看上去严厉，但他是好心，而且他乐意帮助有麻烦的人。
A: I don't know that.
A：我不知道他是那样的人。
have set eyes on 见到过
对话中的应用：
A: Do you know this man?
A：你认识这个人吗？
B: No, I've never set eyes on him.
B：不，我从没见过他。
A: But his face is so familiar to me. Right now I just can't remember who he is.
A：但他的面孔我那么熟悉，可我就是想不起来他是谁。
B: Forget about him. Let's go.
B：别去想他了，咱们走吧。