衛(wèi)生類職稱英語：表示現在/過去/將來情況的虛擬條件句

虛擬條件句主要有三種結構：

1）表示與現在情況相反：主句謂語用“would / could / might +動詞原形”，從句謂語用“動詞的一般過去時”(動詞be的過去式一律用were)。

If I were you,I would not accept his offer.

If I had time,I would certainly go to the cinema with you.

2）表示與過去情況相反：主句謂語用“would / could / might + have +過去分詞”，從句謂語用過去完成時。

If I had got up a little earlier,I wouldn't have missed the train.

If I had been more careful,I might have passed that exam.

3）表示與將來情況相反：主句謂語用“would / could / might +動詞原形”，從句謂語用“were +動詞不定式”或“should +動詞原形”。

If I were to do the job,I would not be able to have enough time to study.

If it should rain tomorrow,I would not go out with you.