表示对过去情况的虚拟 wish+从句主语+had+过去分词 She said something unpleasant. She wishes she hadn't said it.

I wish he had got there ahead of time.

表示对将来情况的虚拟

wish+从句主语+would+动词原形 I wish he would get younger and younger.

I wish he would be more careful.

注意：表示对现在情况的虚拟时，从句的时态不根据前面谓语动词的时态变化而变化，而是依据从句的实际情况，可以表示和现在事实相反，也可以表示和当时事实相反。

I wish I knew the answer to the question.

Yesterday when the teacher asked me the question, I couldn't answer it. Then I wished I knew the answer.

2. 在suggest （建议）、demand（要求）、order（命令）、insist （坚持）、request （请求）、desire （要求）、recommend （建议、推荐）、propose（建议、提议）、require （要求）等动词后面的宾语从句中，谓语动词形式通常用动词原形（美通用）或"should＋动词原形"（英国通用）引导虚拟语气，其基本句式为：

（should） do ...

主语+ suggest/suggested..... that sb. （should） be done...

（should） not do ...

I suggested that we should form a spare time study group.

I demand that he answer me at once.

Doctor Li insisted that the patient should stay in bed for two weeks.

Mr. Wang ordered that we（should） start out immediately.

特别注意：

1. suggest 作"暗示"，"说明"解时，从句谓语动词用陈述语气。

如：His accent suggests that he comes from Shanghai.

2. insist 表坚持的是事实时，从句谓语动词用陈述语气

如：He insisted that we （should） discuss the question at once. （虚拟）

He insisted that he had finished his homework and handed it in. （事实）

3. had hoped +that 从句 这种句型表示一种过去未实现的愿望, 从句谓语动词要用"would＋动词原形"。

如：I had hoped that Jane would become a doctor, but she wasn't good enough at science.

Mike had hoped that his father would answer his letter.

II. 虚拟语气在其它名词性从句中的用法：

在It is necessary/important/strange/suggested/ordered/proposed/requested/dec