表示将来的“不大可能”的情形
If I were to live my life over again, I would have you as my wife.
If I should win the lottery, I would buy a house.
Sometimes I have thought it would be an excellent rule to live each day as if we should die tomorrow. Such an attitude would emphasize sharply the values of life.
What do you think would be the value of the necklace, if I were to sell it?
What do you think is the value of the necklace, if I sell it to you?
If it is were to rain, I would stay home.
If it rains, I will stay home.
现在虚拟
I have often thought it would be a blessing if each human being were stricken blind and deaf for a few days at some time during his early adult life. Darkness would make him more appreciative of sight; silence would teach him the joys of sound.
If I were the president of a university I should establish a compulsory course in "How to Use Your Eyes". The professor would try to show his pupils how they could add joy to their lives by really seeing what passes unnoticed before them. He would try to awake their dormant and sluggish faculties.
练习
A: The subway sure is packed this morning.
B: Yeah. It's a pain that if we all (drive) every day we (not, be) able to breathe in this city.
Man: I haven't seen George all day.
Woman: Have you checked the lab? I wouldn't be surprised if he slept here.
Question: What does the woman imply about George? B
A. He is probably still asleep in the lab.
B. He spends a lot of time in the lab.
C. She needs to check his work.
D. She has no idea where he is.
过去虚拟
Tourism is an odd think. You fly off to a strange land, eagerly abandoning all the comforts of home, and then expend time and money in a futile attempt to recapture the comforts that you (not, lose) if you (not, leave) home in the first place.
If I (know) it would come to this, I (act) differently.
A: The coat you tried on was really nice, and reasonably priced.
B: If I (buy) it right away if they (have) it in my size.
If you (choose) where you were born and grew up, what country/culture (be) your choice?
名词性从句中的虚拟语气
宾语从句：表示请求、要求、命令、建议等的动词后
Advise, beg, command, demand, decide, desire, determine, insist, order, prefer, propose, require, recommend, request, suggest, urge
His father urged that he study medicine.
The instructions ask that we not take more than two pills once.
The board deemed it urgent that these files should be printed right away.
He ordered that federal funds not be used for such an experiment.
主语从句： It is + adj./ -ed/ n. + that
Astonishing, amazing, advisable, appropriate, crucial, essential, important, imperative, necessary, natural, normal, odd, shocked, urgent, usual, vital
If we are ever going to protect the atmosphere, it is crucial that those new plants be environmentally sound.
It is natural that he should not come here.
It is important that the hotel receptionist make sure that guests are registered correctly.
It is natural that the customs of all national minorities be respected.
It is requested that all members of present at the meeting.
wish后面的宾语从句中
I. 对现在的虚拟
1. I wish I were a little younger.
2. I wish I could travel to the moon.
3. I wish I knew his address.
4. Success makes so many people hate you. I wish it weren't that way.
II. 对过去的虚拟
5. I wish I had been there.
6. I wish I had not attended the party.
7. I wish I could have gone with you to the concert last night.
8. I wish I hadn't hurt Mary's feelings like that.
If only感叹句中
1. If only the rain would stop.
2. If only I were taller.
3. If only he had followed your advice!
4. If he had only followed your advice!
As if/ as though引导的从句中
与现在的事实相反，用过去时
1. I really don't care for the way you're speaking to me. It seems as if you were my father.
2. You should live each day as if it were the last and use every second to your advantage.
与过去事实相反，用过去完成时
3. We were still so affectionate that it seemed as if not a single day had gone by.
基于现在迹象做出的推测，有可能发生，用陈述语气。
4. It is becoming dark. It looks as if it's going to rain.
5. It seems as if he has been to America.
It is (high) time (that) …
1. Don't dawdle away your youth any more. It is time you thought about your future.
2. It seems to be high time that this argument were put to an end.
3. You are very selfish. It's high time you realized that you are not the most important person in this world.
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