How shall I address you?

我该怎样称呼你？

You're welcome.

别客气，欢迎你再来。

I'm not a great admirer of his work.

我对他的工作不太欣赏。

She is giving me piano lessons in exchange for her English classes.

我教她英语，她教我弹钢琴。

He has a white-collar job.

他做的是白领工作。

In general, American boys like baseball.

一般而言，美国少年喜欢棒球。