You must know Beijing well.
你一定非常熟悉北京。
A: How many times have you been to Beijing?
A: 你来北京多少次了?
B: Lots of times. Sometimes for business, sometimes for holiday.
B: 很多次了。有时来出差,有时来度假。
A: You must know Beijing well now.
A: 你现在对北京一定非常了解了。
B: Well, I get to know it better every time I visit.
B: 哦,我一次比一次更了解北京。
A: That's good. I think it's better when you know a city well.
A: 好。我想当你了解一个城市的时候感觉更好。
B: Yes. You enjoy it more. It's more interesting.
B: 是的。你会更喜欢它。它会更有趣。
Notes:
1. To ask someone how often they have done something, you can say: How many times...e.g. How many times have you been to Beijing? 要问某人做某事做了多少次,你可说:How many times..(多少次...)。例如:How many times have you been to Beijing? (你去过北京几次?)
2. If you want to describe how welll you know a place, such as a city, you can say: I get to know it better every time I vist. 如果你想描述你对某地非常熟悉,比如一个城市,你可以说:I get to know it better every time I visit (我一次比一次更了解它)。