被动结构与系表结构的区别英语四级语法讲义

“be＋过去分词”这个结构并不都是被动语态，也可能是系表结构。被动语态与系表结构主要区别是：被动结构表示一个动作，而系表结构表示主语的特点或所处的`状态，试比较下面的句子：

被动结构

The enemy was soon surrounded by us.

系表结构

The house is surrounded by trees.

被动结构

She was bitten by the dog in the darkness.

系表结构

I was excited by the news that my husband got promoted.