73.被动语态 (be + 动词过去分词) 用法:1主动语态为下列情况时被动语态的变化:
一般情况:I saw the accident . The accident was seen by me.
We often do homework at night. Homework is often done at night.
双宾情况:He told us a story.We were told a story.(无to)A story was told to us.(有to)
She passed me a pen.I was passed a pen.(无to)A pen was passed to me. (有to)
情态动词:We can make a plan. A plan can be made.
20
进行时态:Tom is writing a letter.A letter is being written by Tom. (be being done)
完成时态:I have finished the work. The work has been finished. (have been done)
被动语态其它用法分别见6和36.
2被动语态常跟的介词:(以下面短语为例)
be made in + 地点 These watches are made in Shanghai.
be made of + 眼睛可以看出的原材料 This desk is made of wood. (仍能看出木头)
be made from +眼睛看不出的原材料 The paper is made from wood. (看不出木头)
be used for + 目的 English is often used for business. (用于商业目的)
This machine is used for cutting things. (用于切割东西)
be used as 被用来当作 English is used as a foreign language in China.
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