您好1)在主语从句中的应用 It is demanded / necessary / a pity + that…等结构的主语从句,谓语动词用should 加动词原形,should 可省略。可用的词有三类It is+(1)suggested, ordered, required, proposed, demanded, requested, insisted等
(2)important, necessary, natural, imperative, strange等
(3)a pity, a shame, no wonder等
+that(should)do 2)在宾语从句中的应用
在表示命令、建议、要求等一类动词后面的从句中,像order, suggest, propose, require, demand, request, insist, command, insist + (should) do等。例如:
I suggest that we (should) hold a meeting next week. 我建议下周召开个会议。
He insisted that he (should ) be sent there.他要求被派到那儿去。
注意:如suggest, insist不表示建议 或坚持要某人做某事时,即它们用于其本意暗示、表明、坚持认为时,宾语从句用陈述语气。
判断改错: (错) You pale face suggests that you(should)be ill.
(对) Your pale face suggests that you are ill.
(错) I insisted that you(should)be wrong.
(对) I insisted that you were wrong.
3)在表语从句,同位语从句中的应用
suggestion, proposal, idea, plan, order, advice等名词后面的表语从句、同位语从句中要用虚拟语气,即(should)+动词原形。例如:
My idea is that we(should)get more people to attend the conference.我的想法是让更多的人来参加会议。
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