某些主语从句中的谓语动词要用虚拟语气 6 a( l( V) I1 W8 p5 g, J2 _- ]8 f
某些表示命令,要求,决定,建议,主张以及“重要性”和“紧迫性”等概念的主语从句中谓语动词要用虚拟语气。这时,谓语动词用动词原形或should +动词原形。这类主语从句一般由 “It is (was) + 形容词/过去分词 + that引导的从句”构成。该结构中,常用的形容词主要有:advisable, appropriate, desirable, essential, imperative, important, necessary, obligatory, proper, urgent, vital等;常用的过去分词主要有:arranged, decided, demanded, desired, ordered, proposed, recommended, requested, suggested等。 www.examw.com
0 r3 u6 f" l$ ^- `+ D It is necessary that you (should) stop smoking so heavily.
$ a; [- d, k# s4 t' e It is arranged that you (should) enter for this competition. |