虛擬語氣的運用

　　虛擬語氣在各種從句的應(yīng)用

　　主語從句的虛擬

　　1. It is + adj. + that sb. (should) do

　　常見的形容詞有：necessary, important, strange, natural

　　It's important that he take my advice.

　　2. It is + n. + that sb. (should) do

　　常見的名詞有：a pity, a shame, no wonder, one's wish

　　It's a pity that he be so silly.

　　3. It is + done + that sb. (should) do

　　常見的過去分詞有：suggested, advised, demanded, requested, required, asked, ordered,

　　proposed, decided, desired, insisted等。

　　It's requested that she go home as soon as possible.

　　賓語從句的虛擬

　　1. 表命令，表建議，表要求的動詞，后接賓語從句虛擬。虛擬的構(gòu)成為(should) do。

　　I advise that he stay at home.

　　2. wish后接從句，虛擬的'構(gòu)成是往過去推一個時態(tài)。

　　I wish I had watched the football match last night.

　　注意以下幾組詞或短語用于虛擬語氣中。

　　1. as if, as though

　　He speaks English as if he were a native speaker.

　　2. otherwise, but, even though

　　He was ill. Otherwise he would have been there.

　　3. with, without, but for

　　Without your help, I would have died two years ago.

　　But for your help, I would have died two years ago.

　　4. would rather I'd rather you told me yourself.

　　5. It's time that

　　It's time that you went to bed.

　　It's time that you should go to bed.

　　表語從句中的虛擬

　　在表語從句中，表示間接的命令，要求、請求、建議、決定等，主句中的主語通常是suggestion, proposal, request, orders, idea等。從句謂語形式是"(should)+動詞原形"。如：

　　His suggestion is that we (should) leave at once.

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