专四选择题(涉及 It is essential ...句式)

The opening ceremony is a great occasion. It is essential (  ) for that.

A for us to be prepared

B that we are prepared

C of us to be prepared

D our being prepared

这道题是选A吗?  怎么理解呢? 

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最佳答案 2020-11-13 23:31

The opening ceremony is a great occasion. It is essential for us to be prepared for that.

1.  be prepared for sth. 系表结构。“为某事做好准备”。

2. It is essential for us to be prepared for that. 是 “It is adj. for sb. to do sth.” 句式。英语最常见的表达之一。It 是形式主语,essential 是表语。for sb. to do sth. 为不定式复合结构,作真正主语,被外置。

3. 答案 B,接 that 从句时,谓语动词须用虚拟语气  (should) be,不能用陈述语气 are。

4. 答案C,of 不能引出不定式的逻辑主语,须用 for sb.

5. 答案D,our being prepared 为动名词复合结构。它可以作句子主语,但不需要外置,不需要形式主语 it 引出句子。

【翻译】开幕式是个盛大的场合。我们必须为此做好准备。


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  • 提出于 2020-11-11 17:01