hide是延续性还是短暂性动词

延续性动词例句：

Sam was hiding behind the door when his mother came in.

句意：当他妈妈进来的时候，山姆正藏在门后。

hide延续性动词，表示动作正在进行，用进行时态，根据came可知用过去进行时，故填was hiding

hide做动词的用法：

He hid the letter in a drawer.他把信藏在抽屉里。

这句话中hid是hide的过去式，意思是藏、隐藏、隐蔽。

He hid behind a false identity.他隐姓埋名。

No amount of make-up could hide her age.再多的化妆品也遮掩不住她的年龄

I have never tried to hide the truth about my past.我从未设法隐瞒我的过去。