knew about

• v. 知道有(听说有)

knew about的用法和样例：

例句

用作动词 (v.)

1. I knew something was dreadfully wrong.
   我知道有些情况极不正常。
2. You may also want to inform users about this issue.
   您也许有必要让使用者知道有这个问题存在。