know的例句：
I don't know what to make of the new manager.
这位新经理，我不知道怎么评价他才好。
These problems are all in your mind, you know.
你知道，这些问题都只是你的凭空想象而已。
Some people don't know when they're well off.
有些人身在福中不知福。
You'll like her once you get to know her.
你一旦了解了她就会喜欢她的。
There were a whole lot of people I didn't know.
有许多人我都不认识。