4. 某些动词后的宾语从句中谓语动词要用虚拟语气
在一些动词后面的宾语从句中,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。这类动词一般表示命令,要求,决定,建议,主张等概念,主要有:advise, ask, command, decide, demand, desire, direct, insist, move, order, propose, recommend, request, require, suggest,等。
The workers demanded that their wages (should) be raised by 10 per cent.
The teacher decided that you do the experiment first.
5. 某些名词后的表语从句和同位语从句中谓语动词要用虚拟语气
在一些名词后面的表语从句和同位语从句中,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。这类名词一般表示命令,要求,决定,建议,主张等概念,主要有:advice, idea, instruction, motion, order, plan, proposal, recommendation, request, requirement, suggestion,等。
My suggestion is that we (should) send for a doctor immediately.
He gave the order that they (should) do the experiment again.
6. 错综时间条件句
条件从句表示的动作和主句表示的动作,有时发生的时间是不一致的.如从句是对过去情况的假设,而主句可能是对现在正在进行情况的假设。 这种句子称为错综时间条件句.
If the weather had been more favourable, the crops would be growing still better.
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