It looks as if it might snow. 看起来好像要下雪了。
3. 目的状语从句中的虚拟语气
（1）以in order that, so that引导的目的状语从句中，谓语多用could/might+动词原形，在口语中常用can/could+动词原形
She took a taxi so that she could get there on time.
(2)以lest, for fear that和in case 引导的目的状语从句中，谓语动词多用（should）+动词原形。
She took an umbrella with her lest/for fear that/in case it should rain.
六．其他形式的虚拟语气
1. It’s time that句型中的虚拟语气
在It’s time that句型中，从句谓语通常用一般过去时或should+动词原形 (should不能省略)，其意为“(早)该做某事了”。如：
It’s high time that we were off. 是我们该走的时候了。
2.在would/had rather, would(just) as soon, would sooner和 would prefer结构中，也用虚拟语气。共同特点是：从句中动词用一般过去时，表示现在或将来要做的事；用过去完成时，则表示过去的情况。
I’d rather you left tomorrow.
I would just as soon you had told me the truth yesterday.
I would rather have bought the dictionary.
3. 表示“祝愿”时，常用“may + 主语 + 动词原形 + 其它”。如：
May you have a good journey! 祝你一路顺风！
May your youth last forever! 祝你青春永驻！
■强化训练■
1. more careful, his bus would not have knocked into the tree.
A. If the driver were B. Had the driver been
C. Should the driver be D. If the driver would have been
2.the football competition, I would have gone to the concert yesterday.
A. In spite of B. But for C. Because of D. As for
3. Look at the terrible situation you are in! If only you my advice!
A. listen to B. would listen to C. had listened to D. have listened to
4. Had Henry received two more votes in the last election, he our monitor now.
A. must have been B. would have been C. were D. would be
5. If the athlete won today, he eight races in a game.
A. would have won B. won C. must have won D. did have won
6. It is time that our mayor measures to protect the poor in the street.
A. takes B. took C. has taken D. taking
7. If I had read the report, I _______ you all about it now.
A. would tell B. will tell C. have told D. would have told
8. — It’s a pity you didn’t won the competition.
— I had had more practice.
A. If only B. As if C. If not D. As with
Key: 1-5 BBCDA
6-8 BAA