新东方考研语法讲堂80
现将虚拟语气在条件句中的各种具体形式和用法分述如下：1、对现在的虚拟，表示与现在事实相反的假设时，条件状语从句的谓语动词用过去式（be的过去式用were.而主句中的谓语动词用would (should, could, might) + 动词原形。见下表：
条件状语从句的动词形式主句的动词形式
If+主语+动词过去式(be的过去式were.在口语等非正式场合中，I，he，she，it等后面也可用was.但在If I were you中，一定要用were，不能用was.I (we)should+动词原形
主语+would (might,could)十动词原形
1、例句：
If I were you, I should study English.
(fact: I am not you, so I shall not study English.)
If he had time, he would attend the meeting.
(fact: He does not have time, so he will not attend the meeting.)
If they didn’t take physical exercises every day, they wouldn’t be so healthy.
(fact: They take physical exercises every day, so they are very healthy.)
If you went to bed earlier, you would not be so sleepy in the morning.
(fact: You often go to bed late, so you are always sleepy in the morning.)
If this were the case, it would be very awkward.
(fact: This is not the case, so it is not awkward.)
Now let’s do some translation:
要是没有虚拟语气，英语就会容易多了。
If there were no subjunctive mood, English would be much easier.
如果我是你，我就在房屋周围种些树。
If I were you, I would (should) plant some trees around the house.
如果我把头发染成蓝色，人人都会笑话我。
If I dyed my hair blue, everybody would laugh at me. Or: I would (should) be laughed at by everybody.
要不是她这么忙，她就会出席今天下午的会议了。
If she were not so busy, she would attend the meeting this afternoon.
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