水烧开没？

_Is the water boiling?
-Yes,it is.
-No,it isn't.
-It sounds when boiling.

问：水烧开没？
Has the water boiled?
答：开了。Yes, it has.
答：没开 No. It hasn't.
答：水开了，它会响的。It would have given a sound if it boiled.

-Is the water boiling?
-Yes, it is.
-No, it isn't.
-It will whistle when boiling

Q: Has the water been boiled?
A: Yes, it has.
A: No, it hasn't.
A: It would sound when it has been boiled.