Question

1.延续性动词表示经验、经历，可以与表示一段时间的状语连用；而非延续性动词表示行为的结果，与表示时间点的状语连用。如：

他的爷爷三年前去世了。His grandpa died three years ago.

他的爷爷去世二年了。His grandpa has been dead for three years.

尝试翻译：

⑴他们十年前相识。                                  

⑵他们相识有十年了。                              

Answer 1

1.(l) They knew each other ten years ago.

(2) They have known each other for ten years.