情境交际

A: Look at that strange thing, Wei Hua! What's that?

B: It's a key.

A: Your auto-bike? What's it then?

B: It's a battery 一 operated machine and it was invented by my father!

A:

B: It's used for riding or flying.

A: Flying?

B: You can just ride it like a bike and it will fly as it goes faster enough.

A:I think your father is so great!

B: I think so. He has invented many things.

A. What's it used for? B. That sounds interesting. C. It's very useful. D. How can it fly? E. Who invented it? F. How was it invented? G. It's used for unlocking and locking my auto bike.