高中英语 module 5 unit 15 第一第二第三条件句(虚拟语气)综合讲解 北师大版必修5

Translate the sentence
• 假如我是你，我会放弃吸烟的。 • If I were you, I would give up smoking. • Were I you, I would give up smoking.
• 非真实条件句要注意1:
• 条件句If 可以省略，条件句变为倒装句 • 若非真实条件句中有 were, had, should 等词时，可省略 if, 而将 were, had, should 移到句首。
• Fill in the blank: • 1. Mike failed the college entrance exam. His mother said to him “ If you _________ (work) hard at school, you had worked __________( be) a college student now. would be
综合练习3： Multiple Choice
• 1. It is hard for me to imagine what I would be doing today if I _______ in love, at the age of seven, with the library in my hometown. (02′上海) • A.wouldn’t have fallen B. had not fallen • C.should fall D. were to fall • 2.______ for the free tickets, I wouldn’t have gone to the films so often.(上海95) A. If it is not B. Were it not C. Had it not been D. If they were not • 3. If you ______ him yesterday, you would know what to do now. A. asked B. ask • C. had asked D. would have asked
Practice
• 1. But for the storm, we would have arrived _______________ (arrive) earlier . • 2. She wasn’t feeling very well. Otherwise wouldn’t have left she ____________________(leave) the meeting so early. • 3. Supposing there is no electricity, life would be _________(be) quite different toady. would have helped • 4. I __________________(help) you, but I was too busy.
would buy were If I _____ you, I __________ (buy) the house right now. had • He is very busy now. If he _____(have) time, he ___________ (come) to see would come me.
would should could might
would should could might
+have done sth
+ do sth
将来 should do
were to do
would should + do sth could Might
Practice
. were 1. I am not free today. If I ____________（be）free would (go) today, I ____________go and visit some of my friends .
过去完成时
一般过去时 be 动词 用were 一般过去时 be 动词 用were
would should could might
would should could might
+have done sth
+ do sth
将来 should do
were to do
would should + do sth could Might
综合练习：语法填空
• It is necessary that we keep in mind yesterday, make good use of today and think about tomorrow. • If there ____________(be) the Communist had not been Party（共产党）, there would not have been the foundation of New China. • If China had not opened to the world, we would lead (lead) a poor life now. __________ Without • ________ the development of our country, we wouldn’t enjoy the rich life today.
时 间
If条件句谓语动词
主句谓语动词
+ do
现在
would 一般过去时 should (be 动词 用were) could might
• If the sun rose _____(rise) from the west tomorrow, I ___________(lend) you some would lend money. were to stop • If the earth ___________(stop) turning, what ______________( happen)? would happen
陈述语气
• 英语中 • 的语气
祈使语气
虚拟语气
If I were a bird, I would ….
freely
虚拟语气表示不可能实现的愿望、 想象和非真实的假设、猜测或建议。
通过谓语动词的特殊形式来表示。
一、非真实条件句中的虚拟语气 二、宾语从句中的虚拟语气 三、主语从句中的虚拟语气
四、表语从句、同位语从句中的虚拟语气
句子翻译
• 1. 假如你明天再迟到，你将被炒鱿鱼。 • If you are late again tomorrow, you will be fired. • 2. 假如我是一只鸟，我会在空中自由自 在地飞翔。 • If I were a bird, I would fly freely in the sky.
Practice ：Say them in another way
If I had had time, I would have run round that lake again. Had I had = ___________ time, I would have run round that lake again. • If there should be a flood, what should we do? Should there be • =_______________a flood, what should we do?
时 间
If条件句谓语动词
主句谓语动词
将来
would 一般过去时 should + do sth (be 动词 用were) could were to do might should do
时 间
If条件句谓语动 词
主句谓语动词
would should + have done could might
五、状语从句中的虚拟语气 六、几种特殊的虚拟语气
真实条件句
if
非真实条件句（用虚拟语气）
Exercises
am • 1. If I _____ (be) not at office tomorrow, you can leave the documents to my secretary • 2. If you heat ice, itwill turn/turns (turn) ___________ to water． has written • 3. If he __________(write) the letter, I’ll post it．
3. -- Do you think Tom will come to my party? -- No. If he ____________(come), I would be very glad. were to come
非真实条件句中的虚拟语气 时 间 If条件句谓语动词 主句谓语动词

过去 现在
过去 过去完成时
• 1. Mike failed in the exam. If he had worked • hard, he would have passed the exam.
非真实条件句中的虚拟语气 时 间 If条件句谓语动词 主句谓语动词
过去 现在
过去完成时
一般过去时 be 动词 用were 一般过去时 be 动词 用were
• 非真实条件句要注意2:
• 错综时间条件句(混合条件句）： • 主句和条件句用不同的时态，主句和从句中 的动词根据各自所表示的动作发生的时间， 采用前面表格中相应的形式。
Practice
•
•
• • •
had prepared (prepare) for your 1. If you _____________ lessons yesterday, you _______________ wouldn’t have (have) so many difficulties now. 2. If I were you, I _______________ (take) his would have taken advice. Look, you have so many problems working out the matter. had listened to 3. If you _____________ the doctor, would be you __________all right now. had got 4. I only got the third prize. If I ________(get) would fly the first prize, I ____________ (fly) to London to have a one-week journey next month.
2. We missed the bus. Mother complained “If we had arrived ________________ (arrive) here ten minutes would have caught earlier, we ___________________(catch) the bus.”
Fill in the blank
would be • 1. Without air, there _________(be) no living things.
• 非真实条件句要注意3:
• 含蓄非真实条件句： • 不用if从句表示条件，而用without, but for(要 不是）otherwise, supposing (假设)等表示假 设，或者通过上下文的语境来代替条件句。
综合练习2：完成句子
• 1.A girl applicant complained “ ____ I a boy, were would have given they __________________me the job.” • … “我要是男的，他们就会把这份工作给我。” would have died • 2. But for the kind man, he _______________ of hunger 30 years ago. 要不是那个好心人， 他三十年前就会死于饥饿。 • 3.I was caught in a traffic jam. Otherwise I would have arrived ___________________here by lunchtime.我 堵车了。否则午饭前就到了。 • 4. 如果我们没有误了那趟火车，现在我们正在家 had not missed 里吃晚饭。If we __________________, we would be having supper at home now. _____________