主动句转被动句1 his mother told him not to waste time on fishing.2 Father gave me a toy at Christmas.3 This factory produces machine tools.4 They should do it at once.5 He is likely to let you down.6 They named the child tom.答案1 He was told not to waste time on fishing (by his mother).2 I was given a toy at Christmas (by my father).3 Machine tools are produced in this factory.4 It should be done at once (by them).5 You are likely to be let down.6 The child was named tom.以上几个例子都是从语法书摘抄的。

代表了几种不同形式的被动变法。

12是不同的动宾短语中宾语变被动;3是一般句子变被动;4是情态动词变被动;5是不定式变被动;6是主-动-宾-补结构的主动句变被动。