你知道吗;你可知道;知道不知道;
例句:
Do you know his address?
你知道他的地址吗?
How do you know that this explanation is wrong?
你怎么知道这个解释是错误的呢?
"How well do you know her?" — "Not very."
“你有多了解她?”——“不太了解。”