【重要句型概览】 　
Who’s that? That’s Deng Yaping.

What’s her job? She is a great ping-pong player.

When was she born? She was born in 1973.

When did she become a ping-pong player?

She became a ping-pong player when she was 3 years old. / When she was 3 years old.

When did she …? When she was … years old.

How long did she …? When did she stop …?

When did you …? I … when I was … years old.

I first ….when I was … years old. I was/felthappy/tired/excited.