(共26张PPT)
Grammar and usage
Unreal conditionals
Module 6 Units 3&4
课件描述:
本课件通过文字、表格和图画对虚拟语气规则的讲解,使得复杂的语法通俗明了,浅显易懂;还配上相应的练习加以巩固。
Zhou Xing Xing's regret
Step 1 情境导入
曾经有一份真挚的感情放在我的面前,我没有珍惜。等我失去的时候我才后悔莫及。
If I had valued the true love when I got it, I wouldn’t have greatly regretted when I lost it.
如果上天能够给我一个再来一次的机会,我会对那个女孩子说三个字:“我爱你”。
If God offered me another chance right now, I would utter ['?t?] the three words to the girl ,“I love you”.
课前任务
You probably wouldn’t get much sleep if you lived near where a wedding reception was being held.
If you came to Brunei, you would have to take off your shoes before going into someone’s house.
1. 一般条件句中虚拟语气的用法。
2. 错综时间条件句的虚拟语气。
3. 省略if的虚拟语气倒装用法。
4. 含蓄条件句的虚拟语气用法。
(一)非真实条件句中虚拟语气的用法
Step 2 语法剖析
表示与现在事实情况相反(present)
表示与过去事实情况相反(past)
表示与将来事实情况相反(future)
过去式(did/were)
(be常用 were)
①过去式(did)/(were)
②should + do
③were to do
过去完成式
(had +done)
would/could / might/should
+ do
would/could/ might/should +have done
would/could/ might/should
+ do
1.虚拟语气在条件从句中
表示与事实情况相反 条件从句的谓语形式 主句的谓语形式
1.unreal present conditionals:
If … were/did … , … would do …
1. 假如我有更多的时间,我就会学习英语。
If I ________time, I ___________ English.
2. 要不是她这么忙,她就会出席今天下午的会议了。
If she ________so busy, she __________ the
meeting this afternoon.
Practice:
had more
would study
were not
would attend
2.unreal past conditionals :
If … had been/done …,
… would/could/might have done …
1) 如果他抓紧时间,他本来能赶上那趟火车。
If he __________, he ________________
the train.
2) 如果你昨天告诉他,他也许会提些建议了。
If you _______ him yesterday,
he _________________ some suggestions.
had hurried
could have caught
had told
might have made
3. unreal future conditionals :
If … were/did/should/were to …,
… would/should/might do …
E.g.
1) 假如我要出国,我就会去文莱。
If I ________ go abroad, I _________ to Brunei.
2) 万一明天下雨,我们的运动会就推迟。
If it____________ tomorrow, our sports meeting______________ off.
were to
would go
should rain
would be put
2.错综时间条件句
虚拟条件句和主句的动作发生的时间
不一致。
PRESENT PAST
If Sam spoke Russian, he would have translated the letter for you. But Sam doesn't speak Russian and that is why he didn't translate the letter.
If I were going to that concert tonight, I would be very excited. But I am not going to go to that concert tonight and that is why I am not excited.
FUTURE PRESENT
1. 如果他当时吃了药,现在就痊愈了。
If he _________ the medicine, he _________ all right now.
2. 我要是你的话,我当时就听从他的建议了。
If I ______ you, I ________________his advice.
had taken
would be
were
would have taken
Practice:
If从句中有were, had(助动词),should时,省略if, 将were, had, should移至主语前,实行倒装。
If you should make a mistake, you should not be embarrassed.
→Should you make a mistake, you
should not be embarrassed.
3.省略if的虚拟语气的倒装
2 ) If you had told me earlier, I would
not have this problem now.
→Had you told me earlier, I would
not have this problem now.
3) If you were to take the train, you
would be there much sooner.
→Were you to take the train,
you would be there much sooner.
注意: 如果省略的条件句中的谓语动词是否定形式时,不能用动词的缩略形式.
我们可以说: Were it not for the expense, I would go abroad now. 但不说: Weren’t it for …
____ she ____ yesterday, she would
meet the famous singer today.
Hadn’t; left B. Had; not left
C. If; didn’t leave D. Didn’t; leave
TIPS
B. Had; not left
4.含蓄条件句的虚拟语气用法
虚拟的条件不是通过if条件句,而是用一些词或短语,如 with, without, otherwise, but( for)等暗示出来。
If I hadn’t got your help, I wouldn’t have passed the exam.
Thanks to your help, otherwise I wouldn’t have passed the exam.
Without\But for\If it hadn’t been for your help, I wouldn’t have passed the exam.
解题时要根据暗示部分和句意来判断时间,句子的谓语动词应参照if大表格中主句的谓语动词形式。
(二)类似if用法的虚拟语气
wish, as if/though后, 现在相反 did/were;过去相反had done;将来相反s/w/c/m + do/be done
even if/though= if用法(现在和过去)
If only后,现在— did/were 过去—had done
注意:as if/though在某些语境中,如果不表示假设意义,就不必用虚拟语气。
The fish smells as if it has gone bad.
1. When a pencil is partly in a glass of water, it
looks as if it __________.
A. breaks B. has broken
C. were broken D. had been broken
C
2. The actor is 58 years old. But he acts as if he
_______ a young man.
A. is B. will be C. am D. were
D
3. The clouds are getting darker and darker. It
looks as if it _______rain.
A. is going to B. will
C. was going to D. would
A
(三)固定短语或句型的虚拟用法
It is (high/about) time that…结构中的定语从句
从句谓语用 did/were或should do/be done
2. would rather后的宾语从句
现在/将来 did
过去 had done
(四)(should)+动词原形的虚拟语气
表示建议、要求、命令等意义的动词或名词后的名词性从句中,谓语动词一律使用should + do/be done。 (should可以省略)
常考类似词如: suggest/suggestion(建议), insist(坚决要求), order, advise, request, desire, propose, urge, recommend等。
注意:insist作“坚持认为,强调”,suggest作“暗示,表明”讲时,宾语从句不用虚拟语气。
His attitude suggests that he isn’t very interested.
他的态度表明他并不非常感兴趣。
The boy insists that he has no girlfriend.
这个男孩坚持认为自己没有女朋友。
Step 3 课中练
1—5 D A C B C
6—10 C B A A C
11—15 D D A B C
Thank you!