The expriment requires more money than has been put in.

The experiment requries more money than_______    

A. have been put in   B. being put in

C. has been put in    D. to be put in

为什么不能选B

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曹荣禄  
擅长:动词用法,句法问题

than引导比较分句,分句需要谓语动词。比较对应项在比较分句中作主语必须省略,所以than后直接后接谓语动词has been put in. 这是现代语法分析。如果按照传统语法分析,先行词money被比较级more修饰,后接定语从句时用关系代词thanthan在从句中作主语,has been put in为从句的谓语。

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  • xiao E 提出于 2022-07-14 17:06