If引导的虚拟语气ppt课件
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虚拟语气在if句的用法PPT幻灯片
8
If you had worked hard ,you would have passed the exam .
9
If they had had enough rain last year, they would have gained good harvest.
10
If he had driven more carefully yesterday, he would not have had the car accident .
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If it were/ should be fine tomorrow , I would go to see him.
14
One years later ,maybe you will be in University
If I should visit/ were to visit/ visited my alma
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Discover2
1.If you had worked hard ,you would have passed the exam . 2.If they had had enough rain last year, they would have gained good harvest. 3.If he had driven more carefully yesterday, he would not have had the car accident.
2
These show your good wishes or dreams. It is evident that they are not real or they can’t come true
表示说话人的愿望、假设、猜测或 建议，而不表示客观存在的事实。
If you had worked hard ,you would have passed the exam .
9
If they had had enough rain last year, they would have gained good harvest.
10
If he had driven more carefully yesterday, he would not have had the car accident .
13
If it were/ should be fine tomorrow , I would go to see him.
14
One years later ,maybe you will be in University
If I should visit/ were to visit/ visited my alma
11
Discover2
1.If you had worked hard ,you would have passed the exam . 2.If they had had enough rain last year, they would have gained good harvest. 3.If he had driven more carefully yesterday, he would not have had the car accident.
2
These show your good wishes or dreams. It is evident that they are not real or they can’t come true
表示说话人的愿望、假设、猜测或 建议，而不表示客观存在的事实。
if条件虚拟句ppt课件
今天早上，她要是不叫我的话，我就会睡过 头了。
经营者提供商品或者服务有欺诈行为 的，应 当按照 消费者 的要求 增加赔 偿其受 到的损 失，增 加赔偿 的金额 为消费 者购买 商品的 价款或 接受服 务的费 用
与将来事实相反的虚拟
❖If you came tomorrow, we would have the meeting.
1) If he ______ drunk, he wouldn't have lost control of the car.
A. wasn't B. weren't C. hasn't been D. hadn't been
2) I would have gone to the concert, if I _____
6)___, I would take an umbrella with me.
• Had I been you
B. I were you
A. C. Were I you
D. I had been you
7) If you were older, I ____ you to go there
yesterday.
A. will allow
B. should allow
C. would have allowed D. had allowed
经营者提供商品或者服务有欺诈行为 的，应 当按照 消费者 的要求 增加赔 偿其受 到的损 失，增 加赔偿 的金额 为消费 者购买 商品的 价款或 接受服 务的费 用
（三）、虚实错综句
A. had had B. has C. had D. would have 49. All of us would have enjoyed the party much
经营者提供商品或者服务有欺诈行为 的，应 当按照 消费者 的要求 增加赔 偿其受 到的损 失，增 加赔偿 的金额 为消费 者购买 商品的 价款或 接受服 务的费 用
与将来事实相反的虚拟
❖If you came tomorrow, we would have the meeting.
1) If he ______ drunk, he wouldn't have lost control of the car.
A. wasn't B. weren't C. hasn't been D. hadn't been
2) I would have gone to the concert, if I _____
6)___, I would take an umbrella with me.
• Had I been you
B. I were you
A. C. Were I you
D. I had been you
7) If you were older, I ____ you to go there
yesterday.
A. will allow
B. should allow
C. would have allowed D. had allowed
经营者提供商品或者服务有欺诈行为 的，应 当按照 消费者 的要求 增加赔 偿其受 到的损 失，增 加赔偿 的金额 为消费 者购买 商品的 价款或 接受服 务的费 用
（三）、虚实错综句
A. had had B. has C. had D. would have 49. All of us would have enjoyed the party much
英语语法If型虚拟语气PPT课件
第7页/共34页
make the right decision. If he hadn't given up then, he would have got worse injured.
After Liu dropped out of the race, China’s Internet was filled with comments that ranged from sympathy to suspicion. It is hard to imagine how much Liu suffered. Luckily, he didn't lose heart. “I never quit easily,” he said," I believe I will come back.” Yes, he made it. If he hadn't been so determined, he wouldn't have succeeded again.
与现在sk事y实.
相反的假设
1. did 2. were
would,should,could,might ＋V.(原)
第11页/共34页
虚拟语气
Case1: If型虚拟条件句
1. If I succeeded in passing the test tomorrow, I would be very happy.
第14页/共34页
She had her teeth pulled out because she ate too much candy.
If she hadn’t eaten so much candy, she wouldn’t have had her teeth pulled out.
make the right decision. If he hadn't given up then, he would have got worse injured.
After Liu dropped out of the race, China’s Internet was filled with comments that ranged from sympathy to suspicion. It is hard to imagine how much Liu suffered. Luckily, he didn't lose heart. “I never quit easily,” he said," I believe I will come back.” Yes, he made it. If he hadn't been so determined, he wouldn't have succeeded again.
与现在sk事y实.
相反的假设
1. did 2. were
would,should,could,might ＋V.(原)
第11页/共34页
虚拟语气
Case1: If型虚拟条件句
1. If I succeeded in passing the test tomorrow, I would be very happy.
第14页/共34页
She had her teeth pulled out because she ate too much candy.
If she hadn’t eaten so much candy, she wouldn’t have had her teeth pulled out.
if 虚拟语气的用法PPT课件
This is the factoryt_h_a_t/_w_h__ic_hmy father visited . • October 1 is a day t_h_a_t_/w__h_i_chwe will never
forget. • October 1 is a day _w_h_e_n_the People’s
Learning Is To Achieve A Certain Goal And Work Hard, Is A Process To Overcome Various Difficulties For A Goal
gave.
及物动词
practice
This is the reason_t_h_a_t/_w_h__ic_h_ he gave me. This is the reason_w_h_y_ he was late.
This is the factory _w__h_e_re__my father worked.
that has lightened my pathway a while. ④ Come and sit by my side if you love me, ⑤ Do not hasted to bid me adieu, ⑥ But (just) remember the Red River Valley, ⑦ And the one that (who) has loved you so
Republic of China was founded.
Enjoy a folk from Canada, and then find out lines that include attributive clause .
Red River Valley ① From this valley they say you are going, ② I will miss your sweet face and sweet smile, ③ For I know you are taking the sunshine
forget. • October 1 is a day _w_h_e_n_the People’s
Learning Is To Achieve A Certain Goal And Work Hard, Is A Process To Overcome Various Difficulties For A Goal
gave.
及物动词
practice
This is the reason_t_h_a_t/_w_h__ic_h_ he gave me. This is the reason_w_h_y_ he was late.
This is the factory _w__h_e_re__my father worked.
that has lightened my pathway a while. ④ Come and sit by my side if you love me, ⑤ Do not hasted to bid me adieu, ⑥ But (just) remember the Red River Valley, ⑦ And the one that (who) has loved you so
Republic of China was founded.
Enjoy a folk from Canada, and then find out lines that include attributive clause .
Red River Valley ① From this valley they say you are going, ② I will miss your sweet face and sweet smile, ③ For I know you are taking the sunshine
if条件句中虚拟语气用法PPT课件
与将来事实相反的虚拟语气
表示与将来实际情况相反的情况，使用“would+动词原形”的形 式。
虚拟语气的使用场景
表达假设或虚构的情况
文学作品中的表达
当需要表达与实际情况相反的情况时， 可以使用虚拟语气来强调这种假设或 虚构的情境。
在文学作品中，虚拟语气常常被用来 表达作者对人物、情节或情感的虚构 和想象。
03 if条件句中虚拟语气的用 法
表示与事实相反的情况
1 2
结构
if+虚拟语气+主句
例子
If I were you, I would take the job. (如果我是 你，我就会接受这份工作。)
3
解释
此句表示“如果我是你”，但实际上“我不是 你”，所以使用虚拟语气。
表示主观愿望和假设
01
语气一致性
在if条件句中，虚拟语气的语气要保 持一致，即主句和从句的语气要相呼 应。
例如，在表示与现在事实相反的虚拟 语气中，主句和从句都应使用一般过 去时（would+动词原形），表示假设 的情况。
语境理解
在使用if条件句中的虚拟语气时，要充分理解语境，根据上下文判断是否需要使 用虚拟语气。
例如，在描述与将来事实相反的虚拟语气时，需要根据上下文判断是否需要使用 将来完成时（would+have+过去分词），表示与将来事实相反的情况。
if条件句中虚拟语气用法ppt课件
contents
目录
• 虚拟语气简介 • if条件句中虚拟语气的形式 • if条件句中虚拟语气的用法 • if条件句中虚拟语气的注意事项 • 练习与巩固
01 虚拟语气简介
定义与特点
定义
虚拟语气是一种特殊的动词形式 ，用来表示与实际情况相反的情 况或者假设的情况。
表示与将来实际情况相反的情况，使用“would+动词原形”的形 式。
虚拟语气的使用场景
表达假设或虚构的情况
文学作品中的表达
当需要表达与实际情况相反的情况时， 可以使用虚拟语气来强调这种假设或 虚构的情境。
在文学作品中，虚拟语气常常被用来 表达作者对人物、情节或情感的虚构 和想象。
03 if条件句中虚拟语气的用 法
表示与事实相反的情况
1 2
结构
if+虚拟语气+主句
例子
If I were you, I would take the job. (如果我是 你，我就会接受这份工作。)
3
解释
此句表示“如果我是你”，但实际上“我不是 你”，所以使用虚拟语气。
表示主观愿望和假设
01
语气一致性
在if条件句中，虚拟语气的语气要保 持一致，即主句和从句的语气要相呼 应。
例如，在表示与现在事实相反的虚拟 语气中，主句和从句都应使用一般过 去时（would+动词原形），表示假设 的情况。
语境理解
在使用if条件句中的虚拟语气时，要充分理解语境，根据上下文判断是否需要使 用虚拟语气。
例如，在描述与将来事实相反的虚拟语气时，需要根据上下文判断是否需要使用 将来完成时（would+have+过去分词），表示与将来事实相反的情况。
if条件句中虚拟语气用法ppt课件
contents
目录
• 虚拟语气简介 • if条件句中虚拟语气的形式 • if条件句中虚拟语气的用法 • if条件句中虚拟语气的注意事项 • 练习与巩固
01 虚拟语气简介
定义与特点
定义
虚拟语气是一种特殊的动词形式 ，用来表示与实际情况相反的情 况或者假设的情况。
if引导的虚拟语气条件句PPT课件
精选ppt2021最新
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2.If it ___ tomorrow, I would not attend the party. A. rained B. rains C. had rained D. were to rain 3. I would have gone to the meeting if I __time. A. had had B. have had C. had D. would have had
精选ppt2021最新
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二.与现在事实相反
If引导的虚拟条件句
主句
与现在事实 相反的假设
If + 主语 + 动词过去式 If + 主语 + （be动词一般用were） would(could/shoul
d/might) + 动词原 即：If + 一般过去时 形
If I were you, I would buy a red skirt.
mood about “if”. 4.Practices.
精选ppt2021最新
2
虚拟语气
概念： 1.表示说话人所说的话不是一个事实，
而是一个假设、怀疑、猜测等（常见于 条件状语从句或让步状语从句）。 2.表示说话人的愿望、建议、要求、命 令等（常见于名次性从句）。 简单来说：不是事实或不大可能发生的 事情，用虚拟语气来表述。
精选ppt2021最新
3
If引导的虚拟条件句
注意：要区分if引导的真实条件句和if引 导的虚拟条件句
表示虚拟的，几乎无法实现的时候，采 用虚拟语气。
精选ppt2021最新
4
If引导的虚拟条件句
TYPES:
if条件句中虚拟语气课件PPT课件
学习心得体会
通过本课的学习，我深入了解了虚拟 语气的使用规则和应用场景，对英语 语法有了更深入的认识。
本课的学习不仅提高了我的英语水平， 也让我对英语语法产生了更浓厚的兴 趣。
在学习过程中，我遇到了一些困难， 但通过不断练习和总结，我逐渐掌握 了虚拟语气的使用技巧。
在未来的学习中，我将继续深入探索 虚拟语气在不同语境中的应用型
01
与现在事实相反的虚拟语气
表示与当前实际情况相反的情况，使用过去时态来表示。例如：“If I
were you, I would choose the latter option.”
02
与过去事实相反的虚拟语气
表示与过去实际情况相反的情况，使用过去完成时态来表示。例如：
“If I had known the answer, I would have told you earlier.”
03
与将来事实相反的虚拟语气
表示与将来实际情况相反的情况，使用过去时态或过去完成时态来表示
。例如：“If I were to do it again, I would make different
choices.”
03 if条件句中虚拟语气的用 法
表示与现在事实相反的情况
总结词
使用would+动词原形
填空题
• 题目：If he _____ the right answer, he would have won the game.
填空题
答案
01
had given
解析
02
从句与过去事实相反，表示与过去事实相反的情况，从句用“
过去完成时”。
题目
03
If she _____ more attention in class, she would have
if虚拟语态PPT课件
Key:D
第31页/共35页
Kitty talks as if she ______ on the spot. A. is B. were C. has been D. be
Key: B
第32页/共35页
Subjunctive
Mood
用在状语从句中 （一）
说明
例句
虚拟语气用在由as if 或 as though 引导的比较 方式状语从句中，其谓语 动词形式与 wish 后的宾 语从句中的谓语动词形式 相同
当虚拟条件句含有were, had, should时，可以省略if，而把were, had, should 移到主语之前，即用倒装句
第13页/共35页
If sb were sth/sb，Sb would do sth. If I were you，I would not do like that. Were I you，I would not do like that.
第14页/共35页
If sb were sth/sb，Sb would do sth. If I were you ,I would ask our teacher for advice. Were I you ,I would ask our teacher for advice.
第15页/共35页
第33页/共35页
二. 虚拟语气在as if (as though)等引导的从 句中.
They look as if they were real brothers. 他们俩看起来好像真的是亲兄弟一样。
第22页/共35页
2.表示过去的事实相反，谓语动词用过去 完成式。例如： He talks as if he had really been there. 他说得好象他当时真的在那里一样。 He talked as if nothing had happened. 他说得好像什么事情也没有发生过。
第31页/共35页
Kitty talks as if she ______ on the spot. A. is B. were C. has been D. be
Key: B
第32页/共35页
Subjunctive
Mood
用在状语从句中 （一）
说明
例句
虚拟语气用在由as if 或 as though 引导的比较 方式状语从句中，其谓语 动词形式与 wish 后的宾 语从句中的谓语动词形式 相同
当虚拟条件句含有were, had, should时，可以省略if，而把were, had, should 移到主语之前，即用倒装句
第13页/共35页
If sb were sth/sb，Sb would do sth. If I were you，I would not do like that. Were I you，I would not do like that.
第14页/共35页
If sb were sth/sb，Sb would do sth. If I were you ,I would ask our teacher for advice. Were I you ,I would ask our teacher for advice.
第15页/共35页
第33页/共35页
二. 虚拟语气在as if (as though)等引导的从 句中.
They look as if they were real brothers. 他们俩看起来好像真的是亲兄弟一样。
第22页/共35页
2.表示过去的事实相反，谓语动词用过去 完成式。例如： He talks as if he had really been there. 他说得好象他当时真的在那里一样。 He talked as if nothing had happened. 他说得好像什么事情也没有发生过。
虚拟语气-(共51张)PPT课件
A. Were B. should C. would D. will
-
18
If you had followed my advice, you would be
able to finish the work now. 如果你当时听了我的话，现在就能完成这份 工作了。 （从句说明过去，主句说明现在。）
时 间 If 条件句
主句
过去
现在
将来
-
10
一、一般条件句中的虚拟语气
时 间 If 条件句
主句
过去
had done
would should could might
+have done sth
现在
would
助动词 be用 were should 实义动词 do 用 did could
might
+ do sth
Without your help, we D____ such rapid progress.
A. couldn’t make B. wouldn’t make
C. will not have made D. wouldn’t have made
-
24
名词性从句中的虚拟句
-
25
宾语从句中的虚拟语气
句式一：wish后面宾语从句中的虚拟语气，表示
与事实相反的愿望。其表达形式一般是将从句的谓
语动词退后一个时态。例如:
1)与现在事实相反 : wish + (that)+did(were)
I wish I were as healthy as you.
A.could take B.would take
C.will have taken D.would- have taken
if引导虚拟语气条件句PPT课件
06
总结与回顾
回顾if引导虚拟语气条件句的用法
虚拟语气在条件句中的用法
在条件句中，使用虚拟语气表示与实际情况相反的情况，或者表 示假设、猜测等。
虚拟语气的形式
虚拟语气有多种形式，包括与现在事实相反、与过去事实相反、与 将来事实相反等。
虚拟语气的时态
虚拟语气与时态有关，需要根据实际情况选择适当的时态。
况，主句用would+have+过 去分词的形式。
翻译题
01
02
03
中文
如果我知道这个消息，我 早就告诉你了。
英文
If I had known the news, I would have told you long ago.
解释
从句表示与过去事实相反 的情况，主句用 would+have+过去分词 的形式。
题目
If he _______ the money, he _______ able to buy a car.
had had; would be
答案
解释
从句表示与过去事实相反的情况，主句用would+______ rained last night,
the ground would be wet this morning.
表示与事实相反的情况
总结词
与事实相反的情况是指条件句中的假设与现实情况相 反，主句使用虚拟语气表示与实际情况的差异。
详细描述
在英语中，当if引导的条件句表示与事实相反的情况时， 主句通常使用虚拟语气。这种用法常用于表示某种假设 的情况并未实现，而是与现实情况相反。例如，“If I were you, I would not make that mistake again.” （如果我是你，我不会再犯那个错误了。）这句话表示 的是假设自己是对方，但实际上并不是，提醒对方不要 犯同样的错误。
虚拟语气-完整版PPT课件
= Our suggestion is that you (should) be there on time
= It is our suggestion that you (should) be there on time.
= It is suggested that you (should) be there on time.
2.If I had had time, I would have stayed there. Had I had time,
3.If it should rain/If it were to rain tomorrow, I would stay at home. Should it rain tomorrow, Were it to rain tomorrow
3）. 错综时间条件句： If you had followed the doctor’s advice, you would feel better now.
条件从句谓语与主句谓语发生时间不一致时，被称为 错综时间条件句。此时主句和从句的谓语动词要依照 假设的时间而定。
If he _h_a_d__s_p_e_n_t(spend) more time practicing speaking English before, he _w_o_u_l_d_b_e____(be) able to speak it better now.
你该离开了。
should do
It’s high time( that )you left.
It’s high time( that) you should leave.
我们该下课了。 It’s time that we had a break. It’s time that we should have a break.
= It is our suggestion that you (should) be there on time.
= It is suggested that you (should) be there on time.
2.If I had had time, I would have stayed there. Had I had time,
3.If it should rain/If it were to rain tomorrow, I would stay at home. Should it rain tomorrow, Were it to rain tomorrow
3）. 错综时间条件句： If you had followed the doctor’s advice, you would feel better now.
条件从句谓语与主句谓语发生时间不一致时，被称为 错综时间条件句。此时主句和从句的谓语动词要依照 假设的时间而定。
If he _h_a_d__s_p_e_n_t(spend) more time practicing speaking English before, he _w_o_u_l_d_b_e____(be) able to speak it better now.
你该离开了。
should do
It’s high time( that )you left.
It’s high time( that) you should leave.
我们该下课了。 It’s time that we had a break. It’s time that we should have a break.
If引导的虚拟语气ppt课件
4
1. 对现在的虚拟
if条件句中的谓语动词 主句的谓语动词
动词用过去形式 (be动词用were)
should/ would/ could/ might + 动词原形
If I were you, I would/ could/ should/ might do that.
If I had money, I would/ could/ should/ might buy that house.
将来
1. 动词过去式 2. should+动词原形 3. were to+动词原形
would/could/should/might +动词原形
9
1.If the world-war broke out again, what
_w_o_u__ld__h_a_p_p_e_n___(happen) to our people on
I would try to find a cure for cancer.
8
Fill in the blanks
时间 if 条件句谓语
主句 谓语
动词过去式 现在 (be动词用were)
would/could/should/might +动词原形
过去 had+过去分词
would/could/should/might + have+过去分词
这类虚拟语气由“should+动词原形”构成，
13
虚拟语气定义：
用来表示说的话不是事 实，或者是不可能发生的情 况，而是一种愿望，建议， 假设的语气叫虚拟语气。
3
if引导的虚拟条件句
If she invited me, I would go to the party. 假如她邀请我参加聚会，我就去。 If she had invited me yesterday, I would have gone to the party. 假如她昨天邀请我参加聚会，我就去了。 If she should invite me tomorrow, I would go to the part 如果她明天邀请我参加聚会，我会去的。
1. 对现在的虚拟
if条件句中的谓语动词 主句的谓语动词
动词用过去形式 (be动词用were)
should/ would/ could/ might + 动词原形
If I were you, I would/ could/ should/ might do that.
If I had money, I would/ could/ should/ might buy that house.
将来
1. 动词过去式 2. should+动词原形 3. were to+动词原形
would/could/should/might +动词原形
9
1.If the world-war broke out again, what
_w_o_u__ld__h_a_p_p_e_n___(happen) to our people on
I would try to find a cure for cancer.
8
Fill in the blanks
时间 if 条件句谓语
主句 谓语
动词过去式 现在 (be动词用were)
would/could/should/might +动词原形
过去 had+过去分词
would/could/should/might + have+过去分词
这类虚拟语气由“should+动词原形”构成，
13
虚拟语气定义：
用来表示说的话不是事 实，或者是不可能发生的情 况，而是一种愿望，建议， 假设的语气叫虚拟语气。
3
if引导的虚拟条件句
If she invited me, I would go to the party. 假如她邀请我参加聚会，我就去。 If she had invited me yesterday, I would have gone to the party. 假如她昨天邀请我参加聚会，我就去了。 If she should invite me tomorrow, I would go to the part 如果她明天邀请我参加聚会，我会去的。
if引导的虚拟语气 精美PPT
C. would have
D.had had
Practice
C 5. If I were to be a doctor, I
those patients.
A.will help
B.help
C.would help
D. would have helped
Practice
D 6.If I
the USA last year, I would have gone to New York City.
A. visited
B.were to visit
C. should visit
D. had visited
Practice
翻译
1.如果我是蜘蛛侠，我会尽最大努力拯救地球。
If I were Spider-man, I would try my best to save the world.
Practice
将来
did/were to do/should do
would(could/might... )do
Practice
单选题
B 1. If there were no subjunctive mood, English much easier to learn.
A. could have been
B. would be
if引导的虚拟条件句的用法
根据事情发生的不同时间，if引导的虚拟条件句可以假设 现在，将来或过去的事情。
if引导的虚拟条件句的用法
对现在假设
If I had one million dollars,I would buy a Lamborghini.
if引导的虚拟条件句的用法
精选高中英语语法通用PPT课件：非真实条件句中的虚拟语气 if引导虚拟语气课件(共32张PPT)
与现在事实相反 PLereasde-inntation
虚拟语气表达的并不是事实， 而是一种主观的愿望、假设、 猜测或空想。
back
与现在事实相反 PLereasde-inntation
实际情形 If从句
主句
与 现在 事实 相反时
would 动词的过去式 should not+ do （be → were） could
of money if I have received full marks. A: What would you have done if you had
had a lot of money? …
与过去事实相反
PPrraaccttiiccee2
Watch a film
What does the actor want to express by the words "This car, ten more people. This pin, two more people"?
B: I wish I were with them,too.Let's go to see them. G: All the way to Shanghai? WWee cgooutlod sifcwheool.
dWidenc'tangnoottossecehtohoelm. every day. B: WIf we earweenroettthheerree,.wWeeccoaunldnoctocookofkorfothr ethme.m.
yourself? • you were the headmaster/class
teacher?
The Subjunctive Mood 1
if引导的虚拟条件句ppt课件.ppt
if引导的虚拟条件句ppt课件.ppt1、虚拟语气------if引导的虚拟条件句虚拟语气(if条件句)Iftheworkingconditionsarenottoobad,Iwillacceptthejob.Ift heworkingconditionswerenottoobad,Iwouldacceptthejob.真实条件句：对现有事实的一种陈述，使用的是陈述语气〕---表达一种看法〔工作条件状况未知〕非真实条件句---虚拟语气〕表达一种假设〔与事实相反---工作条件已经很糟糕了〕If引导的虚拟条件句的三种类型带if的虚拟条件句省略if的虚拟条件句隐藏if的虚拟条件句Ⅰ、带if的虚拟条件句Ifsheinvitedme,Iwouldgototheparty.Ifshehadinvitedmeyest2、erday,Iwouldhavegonetotheparty.Ifsheshouldinvitemetomorrow, Iwouldgototheparty.与如今事实相反：if条件句用一般过去时〔动词be用were〕主句用would(should/could/might)+动词原形IamsorryIamverybusyjustnow.IfIhadtime,Iwouldcertainlygototh emovieswithyou.Ifyoucouldbeartheloneliness,youmightsucceed. Ifwehadn’tmadeadequatepreparations,thepartywouldn’thavebe ensosuccessful.The3、floodmighthavecausedgreatdamagetothepeople,ifwehadn’tbuilt somanydams.与过去事实相反：if条件句中用过去完成时主句用would〔should/could/might〕+have+过去分词。
if条件句虚拟语气PPT课件
if条件句虚拟语气ppt课件
• 引言 • if条件句虚拟语气的基本结构 • if条件句虚拟语气的特殊结构 • if条件句虚拟语气在句子中的应用 • if条件句虚拟语气在写作中的应用 • if条件句虚拟语气的常见错误分析
01
引言
什么是虚拟语气
01
虚拟语气是一种特殊的动词形式 ，用于表达与现实情况相反的情 况或假设条件下的情感、态度和 观点。
04
if条件句虚拟语气在句子中的应用
在宾语从句中的应用
要点一
宾语从句中的if虚拟语气用于表示 与事实相反的情况，通常…
“If I were you, I would take the job.”（如果我是你，我 会接受这份工作。）
要点二
在宾语从句中，有时可以使用 “would+动词原形”代替…
“He said if he had known the truth, he would have told her.”（他说如果当时知道真相，他会告诉她的。）
在表语从句中的应用
要点一
表语从句中的if虚拟语气用于表示 对现在的虚拟，通常使用…
“The solution is that if we were to increase the number of employees, we would improve productivity.”（解决 方案是如果我们增加员工数量，我们将提高生产率。）
形”结构。
例句
If I had known the answer, I would have told you. (如果我 早知道答案，我早就告诉你了。)
与过去事实相反的虚拟语气
总结词
表示与过去事实相反的情况，假设条件与结论都是虚拟的。
• 引言 • if条件句虚拟语气的基本结构 • if条件句虚拟语气的特殊结构 • if条件句虚拟语气在句子中的应用 • if条件句虚拟语气在写作中的应用 • if条件句虚拟语气的常见错误分析
01
引言
什么是虚拟语气
01
虚拟语气是一种特殊的动词形式 ，用于表达与现实情况相反的情 况或假设条件下的情感、态度和 观点。
04
if条件句虚拟语气在句子中的应用
在宾语从句中的应用
要点一
宾语从句中的if虚拟语气用于表示 与事实相反的情况，通常…
“If I were you, I would take the job.”（如果我是你，我 会接受这份工作。）
要点二
在宾语从句中，有时可以使用 “would+动词原形”代替…
“He said if he had known the truth, he would have told her.”（他说如果当时知道真相，他会告诉她的。）
在表语从句中的应用
要点一
表语从句中的if虚拟语气用于表示 对现在的虚拟，通常使用…
“The solution is that if we were to increase the number of employees, we would improve productivity.”（解决 方案是如果我们增加员工数量，我们将提高生产率。）
形”结构。
例句
If I had known the answer, I would have told you. (如果我 早知道答案，我早就告诉你了。)
与过去事实相反的虚拟语气
总结词
表示与过去事实相反的情况，假设条件与结论都是虚拟的。
if条件句中虚拟语气PPT课件
在英语中，虚拟语气通常通过动 词时态的变化来体现，如使用过 去时、过去完成时或过去将来时 等。
虚拟在事实相反的情况，使用一般过去时或过去进行时。
与过去事实相反的虚拟语气
表示与过去事实相反的情况，使用过去完成时。
与将来事实相反的虚拟语气
表示与将来事实相反的情况，使用过去将来时。
在委婉语气中的使用
总结词
虚拟语气在if条件句中还可以用于表达委婉的语气，通过使用相应的时态和谓语动词形式来缓和语气或避免直接表达 。
详细描述
在某些情况下，使用虚拟语气可以表达更加委婉的语气，使话语更加柔和、礼貌或含蓄。这种用法通常用于避免直接 表达某些可能引起冲突或敏感的话题。
例子
If I were you, I would consider carefully before making a decision.（如果我是你，我会在做出决定 之前仔细考虑。）这句话使用虚拟语气来委婉地提出建议或建议对方谨慎行事。
05
if条件句中虚拟语气的例句分析
与现在事实相反的例句
01
02
03
总结词
表示与现在实际情况相反 的情况
例句
If I were you, I would choose this option.（如 果我是你，我会选择这个 选项。）
解释
这句话表示与现在实际情 况相反的情况，即说话者 不是听话者，所以选择的 情况也是不存在的。
与过去事实相反的例句
总结词
表示与过去实际情况相反的情况
例句
If I had known the answer, I would have told you.（如果我 早知道答案，我早就告诉你了。）
解释
这句话表示与过去实际情况相反 的情况，即说话者没有早知道答 案，所以告诉你的情况也是不存
虚拟在事实相反的情况，使用一般过去时或过去进行时。
与过去事实相反的虚拟语气
表示与过去事实相反的情况，使用过去完成时。
与将来事实相反的虚拟语气
表示与将来事实相反的情况，使用过去将来时。
在委婉语气中的使用
总结词
虚拟语气在if条件句中还可以用于表达委婉的语气，通过使用相应的时态和谓语动词形式来缓和语气或避免直接表达 。
详细描述
在某些情况下，使用虚拟语气可以表达更加委婉的语气，使话语更加柔和、礼貌或含蓄。这种用法通常用于避免直接 表达某些可能引起冲突或敏感的话题。
例子
If I were you, I would consider carefully before making a decision.（如果我是你，我会在做出决定 之前仔细考虑。）这句话使用虚拟语气来委婉地提出建议或建议对方谨慎行事。
05
if条件句中虚拟语气的例句分析
与现在事实相反的例句
01
02
03
总结词
表示与现在实际情况相反 的情况
例句
If I were you, I would choose this option.（如 果我是你，我会选择这个 选项。）
解释
这句话表示与现在实际情 况相反的情况，即说话者 不是听话者，所以选择的 情况也是不存在的。
与过去事实相反的例句
总结词
表示与过去实际情况相反的情况
例句
If I had known the answer, I would have told you.（如果我 早知道答案，我早就告诉你了。）
解释
这句话表示与过去实际情况相反 的情况，即说话者没有早知道答 案，所以告诉你的情况也是不存
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control their lives.
4
2. 对过去的虚拟
if条件句中的谓语动词
Had done
主句的谓语动词
Should/would/could/might + have done
1. If they had ended their meeting without further action, Amercia would have been very different.
nuclear reacnly 的用法
用在“wish+宾语从句”中，表示很难实现或不能实现 的愿望，可以翻译为“但愿…”, “悔不该…”等。
① 表示对现在的虚拟，从句的谓语动词用过去式（be 动词用were）；
② 表示对过去的假设，从句的谓语动词用 “had+过去 分词”
1
if引导的条件句
If she invites me tomorrow, I will go to the party.
请把这句话与下面虚拟语气的带条件从句的主从复合句进行比较：
If she invited me, I would go to the party.
假如她邀请我参加聚会，我就去。
If she had invited me yesterday, I would have gone to the party.
9
• But for your help, I couldn’t have done it. • Without electricity human life would be quite
different today.
练习：请用介词短语代替条件状语从句 1. 要不是你的帮助，我就失败了。 2. 如果没有恰当的控制手段，核反应堆就会爆炸（核反应堆
6
• 虚拟语气中省略if：在书面语中，如果从句 的谓语中有were, had 或should, 就可以省略if, 并将were, had 或should 放到句首。当然， 如果从句没有were, had, 或should,就不能省 略if.
7
If I were to do it, I`d do it some other way. →Were I to do it, I’d do it some other way.
③ 表示对将来的愿望，从句的谓语动词用“would (could)+动词原形
11
① 表示与现在事实不相符的假设事件 1. V-ed
主语+ wish/ if only + that+ 2. were 3. would/could/should+V
• I wish that he were my boyfriend. • I wish that he cared for me. • I wish that he could help me when I an in trouble.
12
② 表示与过去事实想法的假设
主语+ wish/ if only + that+ 1. 过去完成时 2. would/could/should+V +have done
If they had not campagined for financial independence, women may not have had control over their own money.
5
与将来事实相反的假设
if条件句中的谓语动词
1. 行为动词用did 2. should + 动词原形 3. were to + 动词原形
If you should fail, try again. →Should you fail, try again.
If you had been here earlier, you would have seen him. →Had you been here earlier, you would have seen him.
主句的谓语动词
Should/would/could/might + 动词原形
1. If the lecture should be late, you should have to make a speech first. 2. If the lecture were late tomorrow, you would have to make a speech first.
假如她昨天邀请我参加聚会，我就去了。
If she should invite me tomorrow, I would go to the part
如果她明天邀请我参加聚会，我会去的。
2
• 后退一步法是指在准确地判断了该句与哪一事实相反后， if引导的非真实条件状语从句中，谓语动词按正常情况 “后退一步”。
I would have bought the house If I had had enough money. →I would have bought the house had I had enough money.
8
• Note： 省略了if的倒装形式的句首不能用动词的缩 略形式。
Were it not for the expense, I would go to Italy. （√） Weren’t it for the expense, I would go to Italy.（×）
主句的谓语动词
Should/would/could/might + 动词原形
1.
If the people were better educated, I believe this could solve the
problem.
If they had proper education in schools, they would know how to
• 也就是： ①与过去事实相反，在从句中用过去完成时形式表示 ②与现在事实相反，在从句中用过去一般时形式表示 ③与将来事实可能相反，在从句中用过去将来时形式表示
• 主句中则用情态动词would, should, could 等加动词形式
3
1. 对现在的虚拟
if条件句中的谓语动词
1. 行为动词用过去形式 2. be动词用were