If-引导的条件状语从句doc资料
知识点名：if引导的条件状语从句
知识点名：if引导的条件状语从句讲义：if引导的条件状语从句1. if意为“如果”，引导条件状语从句时，既可放在主句前面，也可放在主句后面。
若if条件句放在句首，从句后面常加逗号与主句隔开。
If you go there, I'll go, too.如果你去那儿，我也会去。
My mother will take me to the park if she is free.如果我妈妈有空，她就会带我去公园。
2. 时态运用：在含有if引导的条件状语从句的主从复合句中，主句为下列情形之一的，条件状语从句通常用一般现在时。
(1) 主句是一般将来时，即遵循“主将从现”的原则。
If he comes, he will bring his violin.如果他来，他就会把他的小提琴带来。
(2) 主句是含有情态动词may/might/can/must/should等的句子。
If you want to lose weight, you must eat less bread.如果你想减肥，你必须少吃面包。
(3) 主句是祈使句。
If you are not strong enough, please don't take part in such an activity.如果你不是很健壮，请不要参加这种活动。
3. 句型转换：(1) 借助“祈使句+and/or+陈述句（一般将来时）”这一句型来转换。
其中，在句意上and表示顺承；or表示转折，意为“否则”。
If you work hard, you'll pass the exam easily.=Work hard, and you'll pass the exam easily.努力学习，你将很容易通过考试。
Work hard, or you won't pass the exam easily.努力学习，否则你不会轻易地通过考试。
if引导的条件状语从句总结+习题doc资料
if引导的条件状语从句[课本链接]If you do, you’ll be sorry. (Unit 5, Section A)[定义] :if引导的条件状语从句表示假如从句的动作发生，主句的动作就（不）会发生。
[句子结构]if 引导的条件状语从句位置灵活，可直接放在主句后面，也可以放在句首。
放在句首时，从句后面要用逗号和主句隔开。
如：I’ll go to see you if I have time. 如果有时间，我就去看你。
If it rains tomorrow, we’ll sta y at home. 如果明天下雨，我们就呆在家里。
[时态呼应]在复合句中：⑴当主句是一般现在时或是一般将来时时；（2）当主句是祈使句时；（3）当主句含有情态动词时，if引导的条件状语从句通常用一般现在时。
如：If she doesn’t come, she will be sorry. 如果她不来，她会遗憾的。
Have a good rest if you are tired. 如果累了，你就好好休息一下。
We must study hard if we want to pass the final exam. 如果想通过期末考试，我们必须努力学习。
[同义句转换]1. 用“祈使句＋and / or ＋一般将来时的句子”转换。
如：If you work hard, you’ll pass the exam easily. → Work hard, and you’ll pass the exam easily.努力学习，你将很容易通过考试。
If you don’t hurry up, you’ll miss the train. → Hurry up, or you’ll miss the train.快点儿，否则你就赶不上火车了。
2. 用含介词with或without的介词短语转换。
如：If there is no water, fish can’t live. → Fish can’t live without water. 离开水，鱼不能生存。
if引导的条件状语从句(讲义及答案)
if 引导的条件状语从句（讲义）状语用来表示行为发生的时间、地点、目的、方式、程度等，通常由副词或介词短语充当，也可由一个句子充当。
I slept at home yesterday because I had a bad cold.状语从句状语从句指句子作状语。
根据其作用可分为时间、地点、原因、条件、目的、结果、让步、方式等从句。
状语从句一般由连词(从属连词)引导。
I will go to school by bike tomorrow if it is sunny.Grammar focus—I think I’ll take the bus to the party.—If you do, you’ll be late.If you take the bus to the party, you’ll be late.—I think I’ll stay at home.—If you do, you’ll be sorry.If you stay at home, you’ll be sorry.—What will happen if they have the party today?—If they have it today, half the class won’t come.—Should we ask people to bring food?—If we ask people to bring food, they’ll just bring potato chipsand chocolate.1.if 在本单元句中意为“；”，用于引导即 if 引导的是一个完整的句子，所以一定要有主谓，成为从句，另一个句子则成为主句。
If you go there, I’ll go, too.We will go hiking if it doesn’t rain tomorrow.If Bob leaves tomorrow, I will hold a party for him tonight.2.if 引导的条件状语从句既可以放在主句前，也可放在主句后。
If引导地条件状语从句讲解与练习.doc
If 引导的条件状语从句讲解与练习 If引导条件状语从句的条件状语从句最常用的连词是if，常见的if 条件状语从句表示在某条件下，某事很可能发生，条件是可能存在的。
如： If you ask him，he will help you．如果你请他帮忙，他会帮你的。
If you fail in the exam，you will let him down．如果你考试不及格，你会让他失望的。
If you have finished the homework， you can go home．如果你作业做完了就可以回家了。
1．if从句用一般现在时，主句用一般将来时If he runs he’ll get there in time.如果他用跑的，他就会及时赶到那儿。
The cat will scratch you if you pull her tail.如果你拉猫的尾巴，它就会抓你。
2．if从句用一般现在时，主句用may/might/can/must/shouldIf it stops snowing we can go out. 如果雪停了，我们就可以出去。
If you want to lose weight you must/should eat less bread.如果你想减肥，你必须少吃面包。
(另外，if从句还表示不可实现的条件或根本不可能存在的条件，也就是一种虚拟的条件或假设。
从句多用一般过去时或过去完成时，表示对现在或过去的一种假设。
如： If I were you，I would invite him to the party．如果我是你，我会邀请他参加聚会。
I would have arrived much earlier if I had not been caught in the traffic．要不是交通堵塞，我本会来得早一些。
)If条件状语从句练习( )1. If I find his phone number, I ______ you.A. tellB. toldC. will tellD. have told( )2. I __ the CDs to you if I have time tomorrow.A．will return B. returned C. have returned D. return ( )3. The students will go to the Summer Palace if it ________tomorrow.A. won' t rainB. isn' t rainingC. doesn' t rainD. isn't rain ( )4. I won’t watch the TV play if my father ___ me do my homework.A. letB. will letC. won’t letD. lets( )5. If you ___quiet, I’ll tell you what happened.A. willB. are C are to be D be( )6. If you go to the party, you ___ a good time.A. would haveB. haveC. will haveD. had( )7. Don’t worry. Peter will call you as soon as he _____ London.A. will get toB. gets toC. get toD. got to( ) 8.He doesn’t tell me when he __. I’ll telephone you as soon as he ___.A. will come, comesB. will come, will comeC. comes, will comeD. comes, comes( )9.-- I don’t know if Dr. White ______ to the party next week.–-- I think he will come if he ______ free.A. comes; will comeB. will come; will beC. comes; isD. will come; is( )10. I don’t know if there ____ a sports meeting next month.If they _____ it, I must get ready for it.A. is; will holdB. will be; holdC. will be; will holdD. will have; hold宾语从句练习( ) 1. I don’t know ___________________.A. what does he like bestB. what he like bestC. what he does like bestD. what he likes best( ) 2. Can you tell me ______________________?A. where she livesB. where does she liveC. she lives whereD. where she live( ) 3. He asked me _______________________________.A. what time is itB. what time it isC. what time was itD. what time it was( ) 4. Do you know _______________________?A. how much did it costB. how much it did costC. how much it costsD. how much does it cost( ) 5. The man asked her _______________________.A. why did she do itB. why she did itC. why she doesD. why does she do it( ) 6. Nobody knows _________________________.A. when will she come backB. when she come backC. when she will come backD. when does she come back ( ) 7. Mum asked _______________________________.A. where he wasB. where was heC. where he isD. where is he( ) 8. Do you know _______________________________?A. what they are looking forB. what are they looking for C, they are looking for what D. what do they look for ( ) 9. The teacher asked ________________________________.A, who can answer this questionB. who could answer the questionC. what question did she askD. she answered this question( ) 10. I asked her ______________________________.A. whether he has been to AustraliaB. whether has he been to AustraliaC. whether he had been to AustraliaD. whether he goes to Australia( ) 11. The teacher told us ________________________________.A. that light traveled faster than soundB. if light traveled faster than sound.C. that light travels faster than soundD. if light travels faster than sound( ) 12. He said that __________________________________.A. he is doing his homeworkB. he does his homeworkC. he was doing his homeworkD. he do his homework( ) 13. I asked him _________________________.A. where did he goB. where he wentC. where does he goD. where he did go( ) 14. --Excuse me, could you tell me _____ get to the plane? --Certainly. Go straight alone here.A. how can weB. how we canC. when can weD. when we can( ) 15. Do you know _____he will ride here at 8 tomorrow morning?A. whenB. whereC. whetherD. how( ) 16. --Can you tell me why __________________?--Because I want to help the people there.A. do you go to TibetB. did you go to TibetC. are you going to TibetD. you are going to Tibet ( ) 17. Do you know _______________________________?A. what time does the train leaveB. what time leaves the trainC. what time the train leaveD. what time the train leaves( ) 18. Could you tell me _______________________?A. who is heB. where’s the nearest restaurantC. if he will come tomorrowD. which way is to the underground station( ) 19. --Do you know ___________?--Sorry. I don’t know. You may ask the woman over there.A. when the shop opensB. when is the shop openC. when does the shop openD. when will the shop open ( ) 20 --Dad, do you know ____________? --In half an hour.A. when will the football game startB when the football game will startC. when is the football game going to startD. when shall we start the football game( ) 21. Could you tell me _______________________?A. which bus they are waiting forB. which bus are they waiting forC. they’re waiting for which busD. which bus they wait( ) 22. I asked her __________________________.A. whether did she like the red oneB. whether she likes the red oneC. whether does she like the red oneD. whether she liked the red one( ) 23. Can you guess (猜） __________the people in the picture are ?A. whenB. whomC. whoseD. who( ) 24. I’m thinking about ________________________________.A. if I’ll help herB. whether I’ll help herC. what I’ll help herD. that I help her( ) 25. --We never know _____________. --They say he is a teacher.A. what the old man isB. what is the old manC. who is the old manD. which the old man is10月份语法测试成绩 P40学生缴费日期表。
If 引导地条件状语从句讲解与练习.doc
If 引导的条件状语从句讲解与练习If引导条件状语从句的条件状语从句最常用的连词是if，常见的if 条件状语从句表示在某条件下，某事很可能发生，条件是可能存在的。
如：If you ask him，he will help you．如果你请他帮忙，他会帮你的。
If you fail in the exam，you will let him down．如果你考试不及格，你会让他失望的。
If you have finished the homework，you can go home．如果你作业做完了就可以回家了。
1．if从句用一般现在时，主句用一般将来时If he runs he’ll get there in time.如果他用跑的，他就会及时赶到那儿。
The cat will scratch you if you pull her tail.如果你拉猫的尾巴，它就会抓你。
2．if从句用一般现在时，主句用may/might/can/must/shouldIf it stops snowing we can go out. 如果雪停了，我们就可以出去。
If you want to lose weight you must/should eat less bread.如果你想减肥，你必须少吃面包。
(另外，if从句还表示不可实现的条件或根本不可能存在的条件，也就是一种虚拟的条件或假设。
从句多用一般过去时或过去完成时，表示对现在或过去的一种假设。
如：If I were you，I would invite him to the party．如果我是你，我会邀请他参加聚会。
I would have arrived much earlier if I had not been caught in the traffic．要不是交通堵塞，我本会来得早一些。
)If条件状语从句练习( )1. If I find his phone number, I ______ you.A. tellB. toldC. will tellD. have told( )2. I __ the CDs to you if I have time tomorrow.A．will return B. returned C. have returned D. return( )3. The students will go to the Summer Palace if it ________tomorrow.A. won' t rainB. isn' t rainingC. doesn' t rainD. isn' t rain ( )4. I won’t watch the TV play if my fa ther ___ me do my homework.A. letB. will letC. won’t letD. lets( )5. If you ___quiet, I’ll tell you what happened.A. willB. are C are to be D be( )6. If you go to the party, you ___ a good time.A. would haveB. haveC. will haveD. had( )7. Don’t worry. Peter will call you as soon as he _____ London.A. will get toB. gets toC. get toD. got to( ) 8.He doesn’t tell me when he __. I’ll telephone you as soon as he ___.A. will come, comesB. will come, will comeC. comes, will comeD. comes, comes( )9.-- I don’t know if Dr. White ______ to the party next week.–-- I think he will come if he ______ free.A. comes; will comeB. will come; will beC. comes; isD. will come; is( )10. I don’t know if there ____ a sports meeting next month. If they _____ it, I must get ready for it.A. is; will holdB. will be; holdC. will be; will holdD. will have; hold宾语从句练习( ) 1. I don’t know ___________________.A. what does he like bestB. what he like bestC. what he does like bestD. what he likes best( ) 2. Can you tell me ______________________?A. where she livesB. where does she liveC. she lives whereD. where she live( ) 3. He asked me _______________________________.A. what time is itB. what time it isC. what time was itD. what time it was( ) 4. Do you know _______________________?A. how much did it costB. how much it did costC. how much it costsD. how much does it cost( ) 5. The man asked her _______________________.A. why did she do itB. why she did itC. why she doesD. why does she do it( ) 6. Nobody knows _________________________.A. when will she come backB. when she come backC. when she will come backD. when does she come back ( ) 7. Mum asked _______________________________.A. where he wasB. where was heC. where he isD. where is he( ) 8. Do you know _______________________________?A. what they are looking forB. what are they looking forC, they are looking for what D. what do they look for() 9. The teacher asked ________________________________.A, who can answer this questionB. who could answer the questionC. what question did she askD. she answered this question( ) 10. I asked her ______________________________.A. whether he has been to AustraliaB. whether has he been to AustraliaC. whether he had been to AustraliaD. whether he goes to Australia( ) 11. The teacher told us ________________________________.A. that light traveled faster than soundB. if light traveled faster than sound.C. that light travels faster than soundD. if light travels faster than sound( ) 12. He said that __________________________________.A. he is doing his homeworkB. he does his homeworkC. he was doing his homeworkD. he do his homework( ) 13. I asked him _________________________.A. where did he goB. where he wentC. where does he goD. where he did go( ) 14. --Excuse me, could you tell me _____ get to the plane?--Certainly. Go straight alone here.A. how can weB. how we canC. when can weD. when we can( ) 15. Do you know _____he will ride here at 8 tomorrow morning?A. whenB. whereC. whetherD. how( ) 16. --Can you tell me why __________________?--Because I want to help the people there.A. do you go to TibetB. did you go to TibetC. are you going to TibetD. you are going to Tibet( ) 17. Do you know _______________________________?A. what time does the train leaveB. what time leaves the trainC. what time the train leaveD. what time the train leaves( ) 18. Could you tell me _______________________?A. who is heB. where’s the nearest restaurantC. if he will come tomorrowD. which way is to the underground station( ) 19. --Do you know ___________?--Sorry. I don’t know. You may ask the woman over there.A. when the shop opensB. when is the shop openC. when does the shop openD. when will the shop open ( ) 20 --Dad, do you know ____________? --In half an hour.A. when will the football game startB when the football game will startC. when is the football game going to startD. when shall we start the football game( ) 21. Could you tell me _______________________?A. which bus they are waiting forB. which bus are they waiting forC. they’re waiting for which busD. which bus they wait( ) 22. I asked her __________________________.A. whether did she like the red oneB. whether she likes the red oneC. whether does she like the red oneD. whether she liked the red one( ) 23. Can you guess (猜）__________the people in the picture are ?A. whenB. whomC. whoseD. who( ) 24. I’m thinking about ________________________________.A. if I’ll help herB. whether I’ll help herC. what I’ll help herD. that I help her( ) 25. --We never know _____________. --They say he is a teacher.A. what the old man isB. what is the old manC. who is the old manD. which the old man is40学生缴费日期表。
if引导的条件状语从句总结(精)
if引导的条件状语从句总结(精)if引导的四种条件状语从句一、零条件句/绝对真实条件句(Zero Conditional)零条件句，又叫绝对真实条件句，用于阐述事实。
用来表达在该条件下，结果一定会如此(如规则，客观规律、真理等)。
结构是：If+主语+do/does，主语+do/does。
其从句和主句的谓语动词通常为一般现在时。
二、第一条件句/相对真实条件句(First Conditional)第一条件句又叫相对真实条件句，谈论将来可能发生的事情，并考虑这件事情的结果。
强调偶然性或一次性的条件，也可以与绝对真实条件句同义。
if从句用一般现在时或其他现在时，表示将来可能发生的事情(条件);主句用一般将来时，表示这件事情的结果。
结构是：If+主语+do/does，主语+will do。
三、第二条件句/现在虚拟条件句(Second Conditional)第二条件句是虚拟条件句的一种，即现在虚拟条件句(Unreal Present)，用来表达在现在或将来时间下不太可能或不可能发生的条件，这种条件句还可以用来表示试探性的、委婉的语气(可以理解为不大有自信，所以不太真实的条件)。
结构是：①与将来事实相反的非真实条件句是If+主语+should do/were to do/did，主语+would/should/could/might do;②与现在事实相反的非真实条件句是If+主语+did，主语+would/should/could/might+do。
四、第三条件句/过去虚拟条件句(Third Conditional) 第三条件句是表示与过去事实相反的虚拟语气，是用来表达如果(If)当时那样发生，另外一方面(当时)结果会如何。
通常是指过去的事情，带有一切已经太迟而不能够补救的意思。
结构是：If+主语+had done，主语+would/should/could/ might+have done。
if 条件句的时态搭配1.if从句用一般现在时，主句用一般将来时2.if从句用一般现在时，主句用may/might/canIf the fog gets thicker the plane may/might be diverted.3.if从句用一般现在时，主句用must/shouldIf you want to lose weight you must/should eat less bread.4.if从句用一般现在时，主句用一般现在时5.if从句用现在进行时，主句用一般将来时6.if从句用现在完成时，主句用一般将来时If you have finished dinner I’ll ask the waiter for the bill.。
If引导的条件状语从句讲解与练习.doc
If引导的条件状语从句讲解与练习If引导条件状语从句的条件状语从句最常用的连词是if，常见的if条件状语从句表示在某条件下，某事很可能发生，条件是可能存在的。
女口：If you ask him, he will help you如果你请他帮忙，他会帮你的。
If you fail in the exam, you will let him down. 如果你考试不及格，你会让他失望的。
If you have finished the homework you can go home 如果你作业做完了就可以回家了。
1. if从句用一般现在时，主句用一般将来时If he runs he' ll get there in time ・如果他用跑的，他就会及时赶到那儿。
The cat will scratch you if you pull her tail ・如果你拉猫的尾巴，它就会抓你。
2. if 从句用一般现在时，主句用may/might/can/must/shouldIf it stops snowing we can go out如果雪停了，我们就可以出去。
If you want to lose weight you must/should eat less bread ・如果你想减肥，你必须少吃面包。
（另外，if从句还表示不可实现的条件或根本不可能存在的条件，也就是一种虚拟的条件或假设。
从句多用一般过去时或过去完成时，表示对现在或过去的一种假设。
女口：If I were you , I would invite him to the party.如果我是你，我会邀请他参加聚会。
I would have arrived much earlier if I had not been caught in the traffic 要不是交通堵塞，我本会来得早一些。
）If条件状语从句练习( )1. If I find his phone number, I _____ you.A. tellB. toldC. will tellD. have told()2. I __ the CDs to you if I have time tomorrow.A. will returnB. returnedC. have returnedD. return( )3. The students will go to the Summer Palace if it _______ tomorrow.A. won' t rainB. isn' t rainingC. doesn' t rainD. isn' t rain( )4. I won ' t watch the TV play if myhar ___ me do my homework.A. letB. will letC. won' t letD. lets()5. If you ____ q uiet, I ' ll tell you what happened.A. willB. are C are to be D be()6. If you go to the party, you ____ a good time.A. would haveB. haveC. will haveD. had( )7. Don ' t worry. Peter will call you as soon as he _____ London.A. will get toB. gets toC. get toD. got to( )8.He doesn ' t tell me when he __.I ' ll telephone you as soon as heA. will come, comesB. will come, will comeC. comes, will comeD. comes, comes()9.-- I don ' t know if Dr. White _______ to the party next week.--I think he will come if he ______ free.A. comes; will comeB. will come; will beC. comes; isD. will come; is( )10. I don' know if there ______ a sports meeting next month .If they____ i t, I must get ready for it.A. is; will holdB. will be; holdC. will be; will holdD. will have; holdA. what does he like bestB. what he like bestC. what he does like bestD. what he likes best ()2. Can you tell me ______________________ ?宾语从句练习()1. I don ' t know ______________A. where she lives B・ where does she liveC. she lives whereD. where she live( )3. He asked me _______________________________ .A. what time is itB. what time it isC. what time was itD. what time it was ()4. Do you know ?A. how much did it costB. how much it did costC. how much it costsD. how much does it cost( )5. The man asked her _______________________ .A. why did she do itB. why she did itC. why she doesD. why does she do it( )6. Nobody knows _________________________ .A. when will she come backB. when she come backC. when she will come backD. when does she come back ( )7. Mum asked ___________________________________________ .A. where he wasB. where was heC. where he isD. where is he( )8. Do you know _______________________________ ?A. what they are looking forB. what are they looking forC, they are looking for what D. what do they look for ()9. The teacher asked __________________________________________________ .A. who can answer this questionB. who could answer the questionC. what question did she askD. she answered this question( )10. I asked her _______________________________ .A. whether he has been to AustraliaB. whether has he been to AustraliaC. whether he had been to AustraliaD. whether he goes to Australia( )11. The teacher told us _________________________________ .A. that light traveled faster than soundB. if light traveled faster than sound ・C. that light travels faster than soundD. if light travels faster than sound( )12. He said that __________________________________ .A. he is doing his homeworkB. he does his homeworkC. he was doing his homeworkD. he do his homework( )13. I asked him _________________________ .A. where did he goB. where he wentC. where does he goD. where he did go( )14. --Excuse me, could you tell me _____ get to the plane?--Certainl y. Go straight alone here.A. how can weB. how we canC. when can weD. when we can( )15. Do you know _____ he will ride here at 8 tomorrow morning?A. whenB. whereC. whetherD. how( )16. --Can you tell me why __________________ ?--Because I want to help the people there.A. do you go to TibetB. did you go to TibetC. are you going to TibetD. you are going to Tibet( )17. Do you know _______________________________ ?A. what time does the train leaveB. what time leaves the trainC. what time the train leaveD. what time the train leaves( )18. Could you tell me _______________________ ?A. who is heB. where ' s the nearest restaurantC. if he will come tomorrowD. which way is to the underground station( )19 ・--Do you know _________ ?--Sorry・ I don ' t know・ You may ask the woman over there. A.when the shop opens B. when is the shop openC. when does the shop openD. when will the shop open( )20 --Dad, do you know ____________ ? --In half an hour.A. when will the football game startB when the football game will startC. when is the football game going to startD. when shall we start the football game( )21. Could you tell me _______________________ ?A. which bus they are waiting forB. which bus are they waiting forC. they ' re waiting for which busD. which bus they wait( )22. I asked her __________________________ .A. whether did she like the red oneB. whether she likes the red oneC. whether does she like the red oneD. whether she liked the red one( )23. Can you guess 猜) ___________ the people in the picture are ?A. whenB. whomC. whoseD. who( )24. I ' m thinking about _________________________________ .A. if I ' ll help heB. whether I ' ll help herC. what I ' ll help herD. that I help her( )25. --We never know ______________ . --They say he is a teacher.A. what the old man isB. what is the old manC. who is the old manD. which the old man is汪树峰蔡英凯学生缴费日期表。
if引导的条件状语从句-最新教育文档
if引导的条件状语从句含有if引导的条件状语从句的复合句表示假如有从句动作的发生，就会有主句动作的发生。
★通常情况下，如果主句用一般将来时，if引导的条件状语从句用一般现在时。
如：If he misses the last bus, he'll have to walk home.We'll have a party in the garden if the weather is good.★如果主句是祈使句或者主句的谓语部分含有情态动词，if引导的条件状语从句也常用一般现在时。
如：If anyone calls, tell them I'm very busy.If it rains, you can stay at home and relax.【链接】本单元我们还学了连词unless，可意为“除非；如果不”，通常可以和if ... not 互换使用。
如：He won't go to sleep unless you tell him a story.=He won't go to sleep if you don't tell him a story.【运用】if和unless引导的条件状语从句Ⅰ. 单项选择1. We’ll stay at ho me _______ it rains tomorrow.A. andB. ifC. butD. so(2019天津)2. _______ you look after it carefully, this coat will keep you warm through many winters.A. IfB. UnlessC. BeforeD. So(2019甘肃白银)3. —What _______ if they _______ to the meeting late?—Sorry, I don’t know.A. will happen; goB. happened; goC. happens; will goD. will happen; will go(2019湖北随州)4. Mom won’t let Dick go out _______ he promises to be back by 10:00 tonight.A. ifB. whenC. sinceD. unless(2019河北)5. If it _______ sunny tomorrow, I will go shopping with my friend in the supermarket.A. will beB. beC. isD. was(2019青海西宁)Ⅱ. 同义句转化He won’t go to sleep unless you tell him a story.__________________________________________Ⅲ. 汉译英1. 如果她买上票，我就给你打电话。
条件状语从句
条件状语从句一、If引导的条件句1、“if从句(一般现在时)+主句(一般现在时)”的条件句----表达真理或事实(动作必然发生)。
If you heat ice, it turns into water.如果你加热冰,它就会变成水。
If you put suger into water, it disappears.如果你把糖放进水里,它就会溶解。
2、“if从句(一般现在时)+主句(一般将来时)”的条件句----谈论可能发生的的事情。
If it rains tomorrow, we’ll stay at home.如果明天下雨,我们会呆在家里。
If I don’t hear from him, I won’t go. 如果没接到他的通知,我不会去。
*【注】这类条件句主句部分还可以用情态动词,如I may buy a car if I pass the driving test.如果通过驾驶考试,我可能会买一辆车。
If you go to another country, you must obey the local laws.如果你去另一个国家,就必须遵守当地的法律。
3、有时if引导的条件句可以与“祈使句,and/or…”相互转换,If you don’t hurry up, you will miss the bus.=Hurry up, or you will miss the bus.快点,否则你会错过这趟车。
If you use your head, you’ll find a way.=Use your head, and you will find a way.动动脑子的话,你就会想出办法。
二、unless引导的条件状语从句unless意为“除非、如果不”,用来引导否定意义的条件句,等于“if…not…”Let's go out for a walk unless you are too tired.= If you are not too tied, let's go out for a walk. 如果你不累，我们出去散步吧。
if 引导条件状语从句
if 引导条件状语从句
摘要：
1.条件状语从句的定义
2.if 引导条件状语从句的语法结构
3.if 引导条件状语从句的用法和实例
正文：
条件状语从句是用来表示一个条件，即如果某个条件成立，那么就会发生某个结果。
在英语中，条件状语从句通常由if 引导。
语法结构：
if + 条件从句（主语+ 谓语+ 其他成分）
主句（主语+ 谓语+ 其他成分）
if 引导条件状语从句的用法和实例：
1.肯定句中的条件状语从句
If it is hot, we will go to the beach.（如果天气热，我们将去海滩。
）
2.否定句中的条件状语从句
If it is not hot, we will go to the park.（如果天气不热，我们将去公园。
）
3.一般疑问句中的条件状语从句
Will you help me if I need your help?（如果我需要你的帮助，你会帮助我吗？）
4.特殊疑问句中的条件状语从句
What will you do if you win the lottery?（如果你中彩票，你会做什么？）
通过以上实例，我们可以看到if 引导条件状语从句在各种句子类型中的用法。
(完整word版)if引导的条件状语从句讲解和练习(答案)
条件状语从句一、条件状语从句通常由if（如果)， unless（除非），as long as（只要)引导。
例如：If it rains tomorrow， we won't go to the park. 如果明天下雨,我们就不去公园了。
Unless weather stops me， I go for a walk every. 我每天都会去散步，除非遇上坏天气。
Our parents will be pleased with our performance as long as we try our best。
小试牛刀：1、只要我们竭尽全力，父母就会满意我们的表现.Our parents will be pleased with our performance _____ _____ ______ we try our best。
2、如果人人为保护环境做出贡献，世界将会变得更美好。
______ ______ ______ _____ _______ to protecting the environment， the world will become much more beautiful.二、if引导的条件状语从句（1)“if从句+祈使句”的句子。
其实,if作为一个连词,主句也可以是其他形式的句子。
例如：If you want to go, please let me know。
If the green light isn’t on, wait for a minute。
(2）“祈使句 + and （or）+ 陈述句” 在意思上相当于一个带有条件状语从句的复合句。
注意：A. “祈使句 + and + 陈述句”可以转化为if引导的肯定条件状语从句,而且主语是第二人称.B. “祈使句 + or + 陈述句”可以转化为if引导的否定条件状语从句，而且主语是第二人称。
例如：Study hard and you will pass the exam。
if引导的条件状语从句
if引导的条件状语从句表示假如从句的动作发生，主句的动作就（不）会发生。
if 引导的条件状语从句位置灵活，可直接放在主句后面，也可以放在句首。
放在句首时，从句后面要用逗号和主句隔开。
如：I’ll go to see you if I have time. 如果有时间，我就去看你。
If it rains tomorrow, we’ll stay at home. 如果明天下雨，我们就呆在家里。
在复合句中：⑴当主句是一般现在时或是一般将来时时；（2）当主句是祈使句时；（3）当主句含有情态动词时，if引导的条件状语从句通常用一般现在时。
如：If she doesn’t come, she will be sorry. 如果她不来，她会遗憾的。
Have a good rest if you are tired. 如果累了，你就好好休息一下。
We must study hard if we want to pass the final exam. 如果想通过期末考试，我们必须努力学习。
1. 用“祈使句＋ and / or ＋一般将来时的句子”转换。
如：If you work hard, you’ll pass the exam easily. → Work hard, and you’ll pass the exam easily. 努力学习，你将很容易通过考试。
If you don’t hurry up, you’ll miss the train. → Hurry up, or you’ll miss the train. 快点儿，否则你就赶不上火车了。
2. 用含介词with或without的介词短语转换。
如：If there is no water, fish can’t live. → Fish can’t live without water. 离开水，鱼不能生存。
1.if引导的条件状语从句表示在某种条件下某事很可能发生。
If引导的条件状语从句
If引导的条件状语从句
3. 时态要求上有区别
1.I want to know if there will be
aቤተ መጻሕፍቲ ባይዱ
sports meeting next month.
If 引导的宾语从句的时态由主句及本身时 态决定；
2.If it doesn’t rain , we’ll hold it.
If 引导条件状语从句的时态为一般现在时 记住“主将从现”
If引导的条件状语从句
if 引导的条件状语从句和if 引导的宾 语从句的区分:
1. if 在句中的含义不同 I want to know if he is a teacher.
whether
If 在宾语从句中翻译为“是否”
I’ll go to see you if I am free next week.
If引导的条件状语从句
变换：
1.有if引导的条件状语从句的复合句中，当主句和从句的 主语均为you时，可转换为“祈使句，and+简单句”或
“祈使句，or+简单句” You can pass the exam if you work hard. Work hard ----------------，and you will pass the exam.
→主句谓语中也可以用had better(not)do,提建议 例句：如果你想减肥，你最好锻炼。 eg:If you want to lose weight,you had better take some
名师讲解：if引导的条件状语从句
If you gave mesomem on ey, I would be very happy.如果你给我一些钱，我就会很咼兴 的。
【边学边做】用括号内所给词的正确形式填空。
1.What will you buy if you（have）a lot of money?
2.If it（not snow）tomorrow, we will feel unhappy.
3.You mustn'go to school if you（be）still in bed.
4.If he（be）at home at that time, he would know it.
5. Please show me the way if you
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③ 主句为祈使句，if从句用 一般现在时态。
Don't jump into the river if you feel very hot.如果你感到很热，不要跳入河里。
④主句为过去将来时，if从 句用一般过去时态（如果涉及 到be动词，一律都用were）。此时，表达的是和现实相反的 推测，用虚拟语气。
名师讲解：if引导的条件状语从句
用法
例句
① 主句为 般将来时态，if从句用一般现在时态（即主将 从现）。
Wewill stay at homeif it rains tomorrow.
(完整word版)初中英语If引导的条件状语从句.docx
初中英―― if 引的条件状从句在 if 引的条件状从句中， if 和条件句位置灵活，可直接放在主句后面，若 if 条件句放句首，从句后面要加逗号，和主句隔开。
要注意前后一致原 .引条件状从句的接主要有： if( 如果）、unless（除非）或 as long as（只要）等。
unless在意思上等于 if...not。
一、条件状从句用法1、引条件状从句最常用的是if, 由 if 引的条件状从句表示在某种条件下某事很可能生。
如：If you ask him, he will help you.如果你他帮忙 ,他会帮你的。
If you fail in the exam, you will let him down.如果你考不及格 ,你会他失望的。
另外 ,if 从句表示不可的条件或根本不可能存在的条件 ,也就是一种虚的条件或假 ,从句多用一般去或去完成。
如 :If I were you, I would invite him to the party.如果我是你 ,我会邀他参加聚会。
2、 unless = if...not. 除非 ,若不 ,除非在⋯⋯的候例如：Let's go out for a walk unless you are too tired.=If you are not too tired, let's go out for a walk.Unless it rains, the game will be played.除非下雨 ,比将照常行。
二、在条件状从句中，要注意“主将从”的定，即主句用一般将来，从句用一般在表示将来。
例句：I will come to see you if I have time.我有，我就来看你。
三如果 if 条件句的是重复生和示要生的情景和事件，主从句大多用一般在。
如：If bears are in danger ,they attack people.区提醒if 既可以引条件状从句，表示“如果”，也可以引从句，表达“是否”。
【优质文档】if引导的条件状语从句和宾语从句
If的用法if 的条件从句分为真实条件从句和虚拟条件从句。
真实条件从句：真实条件从句适用于主将从现，是假设有可能发生的。
一．位置在if 引导的条件状语从句中，既可以放在主句之前，也可以放在主句之后。
若if 条件句放句首，从句后面要加逗号，和主句隔开。
You will catch the bus if you get up early. = If you get up early, you will catch the bus.二．时态1.（主祈从现）主句：一般现在时态（包含祈使句和含有情态动词can, may, must等的句子）从句：一般现在时态2. （主将从现）主句：一般将来时态从句：一般现在时态3.从句:现在进行时，主句:一般将来时If you are looking for Peter you’ll find him upstairs. 如果你是在找彼得，上楼就会找到他。
4．if从句用现在完成时，主句用一般将来时If you have finished dinner I’ll ask the waiter for the bill. 如果你吃完了，我就叫服务生来算账5.if 条件句谈论的是重复发生和预示要发生的情景和事件，则主从句大多用一般现在时态。
如：If bears are in danger ,they attack people.三．注意事项1.在if 引导的条件状语从句中，当主句是一般将来时态时，不能使用be going to 结构，而要用will.2.在if 引导的条件状语从句中,不能使用some,而要用any.四．同义句转化1.借助于祈使句+and∕or+简单句转化，and表示顺承，or表示转折。
例如：(1)If you work hard, you’ll pass the exam.Work hard, and you’ll pass the exam.(2)If you do n’t hurry up, you’ll be late.Hurry up, or you’ll be late.2.借助于介词with或者without 来转换例如：If you help me, I’ll finish my job soon.With your help , I’ll finish my job soon.if 条件句不一般,几个要点记心间条件句,放在前,逗号要放句中间。
If引导的条件状语从句(“状语”相关文档)共10张
Bif 在wi从ll c句om中e的; w位ill置b不e 同
iIf’l:l从go属t连o s词ee，y意ou思if是I ：am“如fre果e，ne假xt如w，ee倘k.若”
I’ll go to see you if I am free next week. Ifw在ill宾go语o从ut句to中m翻orr译ow为i“f是it 否do”esn’t rain.
定；
2.If it doesn’t rain , we’ll hold it.
If 引导条件状语从句的时态为一般现在时 记
住“主将从现”
----Sam, do you know if Alice ____to my party next week?
----I think she will come if she ____ free.
If 在条件状语从句中翻译为“如果”
2. if 在从句中的位置不同
I don’t know if the train has arrived.
I will go out tomorrow if it doesn’t rain.
= If it doesn’t rain, I will go out tomorrow.
If 在宾语从句中翻译为“是否” 3– IWf shhaet a_r_e_y_o_u__g_o_in_g__to__d_o(ntoomt goerrto)wu?p early , she’ll miss the early bus .
时do态es要n’t求ra上in有区别：口诀 I从f 引句导位的于宾主语句从之句前放时在，主常句用之逗后号；将其与主句隔开。
语法： if引导的条件状语从句
例句：If people obey the traffic rules,
if 引导的条件状语从句
一、if 引导的条件状语从句，主句用一般将来时，从句一般现在时。
即“主将从现”连词if的意思是“如果”，它引导的句子表示某事发生所需要的条件，即“在……条件下某事才能发生”，在句子中充当状语，因此我们称之为条件状语从句。
在复合句中连词if引导的句子为从句，被修饰的句子为主句。
从句可以放在主句后，也可以放在主句前，从句放在主句前时，应用逗号将它与主句隔开if_______If you study hard, you will get good grades.I _won’t_ play basketball this afternoon if it_ __rains___.I ___will_ play basketball this afternoon if it __doesn’t_ _rain.练一练1. If you _____ to the party, you’ll have a great time.A. will goB. wentC. goD. going2. – What are you going to do tomorrow? --We’ll go to the library tomorrow if it ___.A. isn’t rainB. rainC. won’t rainD. doesn’t rain3. I’ll give the book to him if he ___ here next Sunday.A. will comeB. comesC. is comingD. came4. There _________a basketball match in our school tomorrow afternoon, if it doesn’t rain.A. will be B will have C have D is用go与rain的正确形式We_______ to the Great Wall if it ____________ tomorrow.If it ______________ tomorrow, we___________to the Great Wall.二、as soon as的用法“一···就···”的意思主句用一般将来时，从句一般现在时。
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If 引导的条件状语从句
If 引导的条件状语从句遵循主过从过、主将从现的原则。
主将从现（主情从现、主祈从现）
If it rains tomorrow,I won’t climb the hills.
If it doesn’t rain tomorrow,I will go to the countryside with my friends.
If 引导的条件状语从句
If 引导的条件状语从句遵循主过从过、主将从现的原则。
主将从现（主情从现、主祈从现）
If you will help me,I'll finish it on time.
We may go out if it's fine tomorrow.
If you finish your homework,you can watch TV.
Please call me if you go shopping next Sunday.
If I go there，I'll take her some flowers.
We'll stay at home if it rains tomorrow.
Please call me if he’s at home.
If you work harder,you’ll pass the exam.
She will visit her grandpa if she has time tomorrow.
We’ll take a taxi to the city if the train doesn’t arrive on time.
The teacher will be angry if he is late.
If引导的条件状语从句与unless引导的条件状语从句的转换
If+否定形式=unless+肯定形式
You won’t pass the exam if you don’t work hard.
=You won’t pass the exam unless you work hard.
If you don’t go to bed earlier,you will feel tired in the morning.
=Unless you go to bed earlier,you will feel tired in the morning.
If it doesn’t rain,he will play with me tomorrow.
=Unless it rains,he will play with me tomorrow.
If she doesn’t come,I’ll go shopping alone
=Unless she comes,I’ll go shopping alone.
if条件状语从句与祈使句,and/or＋一般将来时的句子转化
If you get up early,you’ll get there on time.
=Get up early,a nd you’ll get there on time.
=Get up early,or you won’t get there on time.
If you get up early，you won't be late for school.
=Get up early，and you won't be late for school.
=Get up early，or you will be late for school.
If you don’t get up early,you won’t c atch up with the early bus. =Get up early,and you will catch up with the early bus.
=Get up early,or you won’t catch up with the early bus.
if条件状语从句与without的句子转化
If there is no water,we can't live.
=We can't live without water.
If there is no water,fish will die.
=Fish will die without water.
If you help me,I’ll finish the work soon.
=With your help,I finish the work soon.
if条件状语从句与祈使句,and/or＋一般将来时的句子转化
If you get up early,you’ll get there on time.
=Get up early,and you’ll get there on time.
=Get up early,o r you won’t get there on time.
If you get up early，you won't be late for school.
=Get up early，and you won't be late for school.
=Get up early，or you will be late for school.
If you don’t get up early,you won’t catch up with the early bus.
=Get up early,and you will catch up with the early bus.
=Get up early,or you won’t catch up with the early bus.
1. your friend ,I'll tell you.
e
B.will come
es
D.are coming
2. If you go to college，you a good education.
A.will get
B.get
C.gets
D.got
3.I want to know if they tomorrow.
e
B.will come C comes D.came
4.Take enough exercise, you'll be in good heath.
A.or
B.so
C.but
D.and
5.If it (not rain),he (play)basketball with
me tomorrow.
6.If Uncle Lan ______(come),I______(call)you up.
7.She must see a dentist if she______(have)a toothache.
8.Please wake me up if he______(come)back.
9.Hurry up！Or you ______(be)late again.
10.If you don’t be quic k,you (be)late.
1.We won’t wait for you you can’t arrive on time.
A.until
B.when
C.after
D.if
2.The children will go to the zoo if it (not rain)this Saturday.
3.If she work hard,she be able to go to colleage.
A.not,not
B.won’t,won’t
C.won’t,doesn’t
D.dpesn’t,won’t
4.If I run every day,I (be)healthier.
5.If it (not rain),he (play)with me tomorrow.
6.She must see a dentist if she (have)a toothache.
7.Study hard,or you (not pass)the test.
8.If you (not go)to bed earlier,you will feel tired in the morning.
9.If he (be)free tomorrow,he will come to your birthday party.
10.We will go to the zoo if it (not snow)tomorrow.
11.If it is fine tomorrow,I (go)for a filed trip.。