英语专业四级语法词汇详解四十套:第18套

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Test Eighteen

主语从句中的虚拟语气

1)It is(was)+suggested+that+(should)+动词原形。如：

It is proposed that more selective courses be offered next year.

It has been decided that a special committee be formed to supervise the work.

2)It is(was)+形容词+that+(should)+动词原形。

该句式中的形容词一般包括：advisable, appropriate, desirable, essential, important, imperative, necessary, impossible等。例如：

It is important that the students take brief notes while listening to the lecture.

It is essential that all the facts be examined first.

近义词辨析

obvious, apparent, evident, clear

这组词均含有“明显的”的意思。

obvious

指被觉察的东西具有显著特点，不需费力就可觉察到，常用于一目了然的事物。

apparent

意为表面看起来很明显，而实际情况未必如此。

evident

指有证据作出合理判断，考虑到各种事实、条件后而显得明显。

clear

指不存在使人迷惑或使问题复杂化的因素。

It was an obvious mistake for him to have gone alone.他独自一人去，这是一个明显的错误。

It was becoming increasingly apparent that he disliked me.他不喜欢我这一点变得越来越明显。

The applause made it evident that the play was a hit.掌声明显地表明这部剧引起了轰动。

The situation is clear to everyone.局势大家都清楚。