1.“be+过去分词”并不一定都是被动语态，有时这个过去分词是表语，说明主语所处的状态：
But she wasn't hurt.
但她没有受伤。
The door is locked.
门锁上了。
The library is now closed.
图书馆已经关门了。
The lake is surrounded by trees.
湖的周围都足树。
The ground is covered with snow.
地上被白雪覆盖。
2.有许多过去分词几下已成了形容词，在句中通常用作表语：
She is very interested in music.
她对音乐很有兴趣。
They are all very excited.
他们都很激动。
Don't be worried.
不要发愁。
She was amused to hear it.
听了这话她感到很有趣。
3.有时还可以用其他系动词和分词连用：
She looked delighted.
她看起米很高兴。
He seemed discouraged.
他似乎很泄气。
Don't you feel bored?
你不觉得枯燥无味吗?
上述情况就不能说它们是被动语态，因为它们表示的是状态而不是被动的动作。
在很多情况下过去分词都有被动的意思，可用作定语或表语：
He was badly wounded.
他受了重伤。
They took good care of the wounded soldiers.
他们很好地照顾了受伤的士兵。
5.“get+过去分词”的结构，虽是“系动词+表语”，却很接近被动语态：
They got married last May.
他们是去年五月结婚的。
Many people got injured in the accident.
在事故中许多人受了伤。
Don't get excited!
不要激动。
He got drunk that night.
那天晚上他喝醉了。
