Test Eighteen
主語從句中的虛擬語氣
1)It is(was)+suggested+that+(should)+動詞原形。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)+形容詞+that+(should)+動詞原形。
該句式中的形容詞一般包括：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.
近義詞辨析
obvious, apparent, evident, clear
這組詞均含有“明顯的”的意思。
obvious
指被覺察的東西具有顯著特點，不需費力就可覺察到，常用于一目了然的事物。
apparent
意為表面看起來很明顯，而實際情況未必如此。
evident
指有證據(jù)作出合理判斷，考慮到各種事實、條件后而顯得明顯。
clear
指不存在使人迷惑或使問題復雜化的因素。
It was an obvious mistake for him to have gone alone.他獨自一人去，這是一個明顯的錯誤。
It was becoming increasingly apparent that he disliked me.他不喜歡我這一點變得越來越明顯。
The applause made it evident that the play was a hit.掌聲明顯地表明這部劇引起了轟動。
The situation is clear to everyone.局勢大家都清楚。
主語從句中的虛擬語氣
1)It is(was)+suggested+that+(should)+動詞原形。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)+形容詞+that+(should)+動詞原形。
該句式中的形容詞一般包括：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.
近義詞辨析
obvious, apparent, evident, clear
這組詞均含有“明顯的”的意思。
obvious
指被覺察的東西具有顯著特點，不需費力就可覺察到，常用于一目了然的事物。
apparent
意為表面看起來很明顯，而實際情況未必如此。
evident
指有證據(jù)作出合理判斷，考慮到各種事實、條件后而顯得明顯。
clear
指不存在使人迷惑或使問題復雜化的因素。
It was an obvious mistake for him to have gone alone.他獨自一人去，這是一個明顯的錯誤。
It was becoming increasingly apparent that he disliked me.他不喜歡我這一點變得越來越明顯。
The applause made it evident that the play was a hit.掌聲明顯地表明這部劇引起了轟動。
The situation is clear to everyone.局勢大家都清楚。