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关于 It…that-分句结构,句子成分的问题

来源:www.lcyfsc.com 2025-04-14

各位老师好,以下是刚刚在360百科上搜索到的内容:

带有半助动词作为动词词组的组成部分的句子,有些可以转换为" It…that-分句"结构,比如:

They are certain to win the game.他们一定会在比赛中获胜。

→It is certain that they will win the game.

 我想请问关于句子的成分:

1.They are certain to win the game---certain to win the game的成分是表语,to win the game做certain的状语或形容词补足语吗?

2.It is certain that they will win the game---it是形式主语,真的的主语是they will win the game吗?

1.They are certain to win the game---certain to win the game的成分是表语,to win the game做certain的状语或形容词补足语吗?

——不是。are certain to win the game 是 be adj. to do 结构,此结构不适合拆分,系表+不定式构成合成谓语,表示“推断”。英语中,有一种be + adj. to do 结构,在该结构中,系表和不定式一同构成“合成谓语”,不要拆分。因为 be + adj.具备“情态意义”,因此在剖析成分时,大家习惯上叫做“半助动词或半情态动词,与后面的不定式构成“合成谓语”,或叫“复合谓语”。我觉得,问题的重点在于这个形容词的性质,它包含以下几种状况:形容词表示“能力、义务、意愿、推断、倾向”等。它们在乎义上等于对应的情态动词。依据表意的不同,半助动词分类如下:

(1)能力类:be + able/unable to do     = can do/can’t do

(2)义务类:be supposed/expected/obliged to do (外加 have to do)  = should do/must do

(3)推断类:be + sure/certain/likely/bound to do   = must do/may do

......

2.It is certain that they will win the game---it是形式主语,真的的主语是they will win the game吗?

——剖析正确。

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