2012年12月大学英语四级语法:不定式3 7 n: P- {+ D: B* H5 z' V不定式的完成式 # r! s) G* q$ G& i d4 | 当不定式的动作发生在谓语动词的动作之前,不定式要用完成式,在句中可作宾语,状语以及构成复合宾语,复合谓语。 ( s3 @( a$ P5 Q She seemed to have heard about the news already。www.examw.com ! V* N0 O. \1 v1 U He was believed to have been a very rich man。