wish + that clause (would/could/might + do与将来相反)
wish + that clause ( had done 与过去相反)
i wish i could go with them tomorrow.
i wish i had never met him.
8.it is (high/about) time + 从句(did或should do )
it is (high/about) time we went home.
9.would rather + clause (did 与现在或将来相反)；（had done 与过去相反）
i would rather you came tomorrow.
i would rather you hadn’t told her the news.
you could have washed your clothes yourself. 你本可以自已洗衣服的。
省去了"if you had wanted to")(事实是:你自己没洗衣服，因为你不想洗。)
②省去主句(常用以表示愿望) if only + clause ( did/were与现在相反)/ (would/could/might + do与将来相反) /( had done 与过去相反) “要是…….就好了“
if my grandmother were with me! 如果我的祖母与我在一起多好啊!(事实是:祖母已不在世。)
if only she had not left! 如果她没走就好了!(事实是:她已经走了。)
if only he would come tomorrow!
if only i had taken her advice!
if only i were ten years younger!
11.as if + clause (did/were 与现在相反) / (would/could/might + do与将来相反)/( had done 与过去相反)
she treats kate as if she were her own daughter.
they talked as if they had been friends for years.
12.would like/was/were to have done something
i would like to have attended the party, but one of my friends came to see me.
but for your help we couldn’t have succeeded in the experiment.
without electricity, human life would be quite different today.
without the air to hold some of the sun's heat, the earth at night would be freezing cold.
he hesitated for a moment before kicking the ball, otherwise he would have scored a goal.
i told sally how to get here, but perhaps i should have written it down for her.
the captain kept calm in the terrible storm, otherwise the accident wouldn't have been prevented.
yesterday, jane walked away from the discussion. otherwise, she might have said something she would regret later.
given more than two hours, we could have done the work better.
not having finished the work, he couldn't have seen this film.
1. why didn't you tell me there was no meeting today? i _____ all the way here _____the heavy snow.
a. needn't have driven；through b. can't have driven；across