if真实条件句语法及练习

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if引导的条件句是什么从句

if引导的条件句是什么从句if 引导的条件句有真实条件句和非真实条件句两种；1、真实条件句：叙述真实可能发生的事情；例句：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。

扩展资料2、非真实条件句：虚拟语气的一种，表示与实际已发生事实相反：例句：If I were you, I would invite him.如果我是你，我会邀请他。

3、另一个常用连词为unless,大多数时候意思与 if not 相近：例句：Let's go out for a walk unless you are too tired.我们出去散步吧，除非你太累了。

例句：If you are not too tired, let's go out for a walk.如果你不太累，我们出去散步吧。

条件状语从句的基本用法1、用if引导：if意为“如果”。

例句：If you cheat in the exam you’ll never get away with it.考试作弊必予追究。

2、用unless引导：unless的意思是“如果不”“除非”。

例句：Unless you go at once you will be late.如果你不马上走，就会迟到的'。

3、用as [so] long as引导：as [so] long as的意思是“如果”“只要”。

例句：I’ll remember that day as long as I live.只要我活着，我就不会忘记那个日子。

4、用in case引导：in case用连词引导条件状语从句时，其意为“如果”“万一”。

例句：In case I forget, please remind me about it.万一我忘记，请提醒我一下。

5、条件状语从句的时态：当主句为将来时态或含有将来意义时，条件状语从句习惯上要用一般现在时表示将来意义，而不能直接使用将来时态。

if条件句练习题及答案

if条件句练习题及答案If条件句练习题及答案If条件句是英语语法中非常重要的一部分，它用来表达假设或条件。

以下是一些if条件句的练习题及答案，希望能帮助大家更好地掌握这一语法知识。

练习题一：用正确的if条件句填空。

1. If I __________ (have) enough money, I would buy a new car.2. If it __________ (rain) tomorrow, we will stay at home.3. If she __________ (study) harder, she would pass the exam.4. If he __________ (not be) late, we would have caught the train.答案：1. had2. rains3. studied4. had not been练习题二：选择正确的if条件句。

1. If I had studied harder, I __________ the exam.a) would have passedb) will passc) passd) passed2. If it rains tomorrow, we __________ our picnic.a) will cancelb) would cancelc) canceld) cancelled3. If you had told me earlier, I __________ helped you.a) willb) wouldc) would haved) had答案：1. a) would have passed2. a) will cancel3. c) would have练习题三：根据给定的情景写出合适的if条件句。

1. 你的朋友迟到了，你会怎么说？If you had left home earlier, you wouldn't have missed the bus.2. 你想和朋友一起去看电影，但天气可能会下雨，你会怎么说？ If it rains tomorrow, we will stay at home and watch a movie.3. 你没有通过考试，你会怎么安慰自己？If I had studied harder, I would have passed the exam.答案：1. If you had left home earlier, you wouldn't have missed the bus.2. If it rains tomorrow, we will stay at home and watch a movie.3. If I had studied harder, I would have passed the exam.希望以上练习题和答案能帮助大家更好地理解和掌握if条件句的用法。

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 you study hard, you will pass the exam.Hurry up, or you’ll be late. =If you don’t hurry up, you’ll be late.考题(2010重庆中考)Work hard，________ you may catch up with your classmates soon.A.orB.butC.andD.yet思路解析：本句是“祈使句＋and”的句型，句意为“努力学习，你会很快赶上其他同学的”，and在句中表示承接关系，所以选C项。

If引导的条件状语从句讲解与练习

I f引导的条件状语从句讲解与练习LELE was finally revised on the morning of December 16, 2020If 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。

人教版中考英语语法知识点If+引导的条件句+练习

语法专题：条件状语从句（1）if条件句：有可能性结果发生的行动，在这些句子中，动词的时态是不同的，if 引导的条件状语从句中，主句用一般将来时态，从句用一般现在时态（主将从现）If it doesn’t rain（从句）, we’ll have a picnic tomorrow（主句）.We’ll have a picnic tomorrow, if it doesn’t rain.（if引导的从句可置前可置后）（2）主祈从现（祈使句+if+一般现在时态）Put up your hands if you have any questions to ask. 如果你们有问题问的话，请举手。

当主语是you时，if 引导的条件状语从句可以与”祈使句+and/ or +简单句”进行句型转换。

And 表示句意顺承，or 表示转折，意为”否则”。

Take care , or you will fall off the tree. = If you don’t take care, you’ll fall off the tree. 小心，否则你会从树上掉下来。

（3）主情从现（情态动词+if +一般现在时态）If I get there early, I can see the doctor quickly.（4）句型：will do式be going to do式肯定从句If主语+动词+其他, 主语+will(won’t) do+其他. If主语+动词+其他, 主语+be(be not) going to do+其他.否定从句If主语+be+not+其他, 主语+will(won’t) do+其他. If主语+be+not+其他, 主语+be(be not) going to do+其他.If主语+don't/ doesn't +动词原形+其他, 主语+will(won’t) do+其他. If主语+don't/ doesn't +动词原形+其他, 主语+be(be not) going to do+其他.If the picture is silly, strange and colourful, you will remember it better.If I have time, I am going to visite you .I will go to the park if it doesn’t rain tomorrow . I won't go to the park if it rains tomorrow.专题精讲实战演练题型1：单项选择( ) 1. If the robot ___________ wrong，you can get a new one for free or get all your money back.A. wentB. goesC. would goD. will go ( ) 2. —We’ll go for a picnic if it ___________ on Sunday.—Wish you a lovely weekend.A. rainB. doesn’t rainC. won’t rainD. rains ( ) 3. I’ll do it better if the teacher ___________ me another chance.A. giveB. givesC. gaveD. will give( ) 4. If a polar bear ___________, it ___________ fish from the waterA. will be hungry；catchesB. is hungry；will catchB. is going to be hungry；catches D. is hungry；won’t catch( ) 5. If our government ___________ attention to controlling food safety now, our health ___________ in danger.A. won’t pay; isB. doesn’t pay; isC. won’t pay; will beD. doesn’t pay; will be( ) 6. We will go for a picnic if it___________ tomorrow.A. doesn’t rainB. wasn’t rainyC. won’t rainD. wasn’t raining( ) 7. If the pure water is heated to 100 centigrade degrees, it___________ boil.A. is going toB. willC. wouldD. is to ( ) 8. She will go to America___________ she has much free time and money.A. as long asB. butC. thoughD. although( ) 9. We will go to the West Lake___________ it doesn’t rain heavily tomorrow.A. ifB. unlessC. as long asD. once ( ) 10. I won’t call you, ___________ something unexpected happens.A. unlessB. whetherC. becauseD. While Keys: 1-5 BBBBD 6-10ABAAA题型2：以所给词的正确形式填空1. If he ________ (study) hard, he will get good grades.2. Everyone must wear uniforms. If you don't, they ___________ (let) you in.3. If you stand at the top of the mountain, you _________ (see) the view of the whole city.4. My grandfather will wear a pair of glasses if he__________ (read) newspapers.5. Please turn off the light if you ________ (leave) the classroom.6. We’ll go for a picnic unless it ________(rain) this Sunday.7. Mr Smith ________ (let) you know if he needs help.8. If you walk along the street, you ________ (see) many foreigners.9. If Mary ________ (ask) me for help，I will try my best to help her.10. I don't know if it will snow tomorrow. If it_______ (snow)，we'll make snowmen. Keys:1. Studies 2.won’t let 3. will see 4. reads 5.leave6.doesn’t rain7.will let8.will see9. asks 10.snows直击中考题型1：单项选择( ) 1.—I wonder if your wife ________ to the party.—If your wife _________, so will mine.A. will go, goB. will go, goesC. goes, will goD. will go, will go ( ) 2. If he _________ in half an hour, we _________ wait for him.A. won't come, won'tB. won't come, don'tC. doesn't come, won'tD. will come, don't ( ) 3. I will send you an e-mail as soon as I_________ in Canada.A. arriveB. arrivedC. am arrivingD. will arrive( ) 4. If there ________ no buying and selling of animals, there _________ no killing in nature.A. is; will beB. will be; will beC. is; isD. will be; is ( ) 5. You can’t watch TV ________ you finish your homework.A. beforeB. ifC. whileD. asKeys:1-5:ACAAA。

If用法汇总及练习

If 用法汇总1、主将从现（主句为一般将来时,从句为一般现在时）；eg:If it rains(从句) ,I will stay at home（主句）.=I will stay at home if it rains.2、主句含有情态动词（must、may、can etc.）从句为一般现在时；eg:If you drive too fast ,you may have an accident.=You may have an accident if you drive too fast3、主句为祈使句,从句要用一般现在时态；eg:Don't play computer games if you don't finish your homework. 4、是否=whetherAsk if he is at home. I wonder if she is ill.5、虚拟语气eg:If I were a bird ,I would fly in the sky.（事实我不可能是鸟）时态：可以表示过去，现在和将来的情况，它的基本特点是时态退后.a.同现在事实相反的假设从句用一般过去时should( would) +动词原形If they were here,they would help you.b.表示于过去事实相反的假设从句用过去完成时should(would) have+ 过去分词If she had worked harder,she would have succeeded.If my lawyer had been here last Saturday,he would have prevented me from going.c.表示对将来的假想一般过去时，were+ to do，从句：主+ should/would/could/might+v原形should+ v原形，If you succeeded,everything would be all right.If you were to succeed,everything would be all right.If you should succeed,everything would be all right.单项练习（每个必须让学生翻译）1. If I _____ where he lived, I _____ a note to him.A. know, would have sentB. had known, would have sentC. know, would sendD. knew, would have sent2.Mary is ill today. If she _____, she _____ absent from school.A. were not ill; wouldn’t beB. had been ill; wouldn’t have beenC. had been ill; should have beenD. hadn’t been ill; could be3. He acted as if he _____ everything in the world.A. knewB. knowsC. has knownD. won't know4. If you had enough money, what _____?A. will you buyB. would you buyC. would you have boughtD. will you have bought5. If Mr. Young _____ with justice, he _____ such a wrong thing.A. were treated; wouldn’t doB. had been treated; wouldn’t have doneC. were treated; wouldn’t have doneD. had been treated; wouldn’t do6. What _____ if there _____ no light during the day?A. will happen; wasB. would happen; isC. happens; wereD. would happen; were7. The spokesman acted that way as if he _____ anything about the accident but actually he did.A. doesn’t hearB. didn’t hearC. haven’t heardD. hadn’t heard8.If it _____ not for the fact that you _____ ill now, I would surely punish you.A. is; areB. were; wereC. were; areD. was; were9. Many Chinese movie stars now have given up their Chinese nationality. If I were them,I _____ that.A. shouldn’t doB. didn’t doC. hadn’t doneD. won’t do10. I want to get back by 5 o’clock if _____.A. likelyB. canC. possibleD. Probable11. It seems as if it _____ already summer now but it is only February.A. isB. wasC. wereD. had been12. If Henry had not pulled his cap low over his brow, he _____ by the police.A. might be recognizedB. might have been recognizedC. would have recognizedD. was to have been recognized13. There is a ring at the door. That _____ be the postman, I suppose.A. willB. wouldC. is going toD. was going to14. Look at the dark clouds—there _____ be a storm.A. willB. must have beenC. is going toD. would15. —Why are you taking the pictures down?—I _____ the wall.A. paintB. have just paintedC. am going to paintD. will have painted16. —Can I stay at home tomorrow?—Yes, you can if it_____.A. will snowB. is going to snowC. snowsD. snowed17. I don’t know if he _____ this afternoon. But if he _____, I will tell you.A. will come; will do;B. comes; will doC. will come; doesD. comes; does18. —I thought I asked you to fix the radio.—Oh, I’m sorry. I _____ it right away.A. am to doB. will doC. was about to doD. am going to do19. The WTO can’t live up to its name _____ it does not include a country that is home to one fifth of mankind.A. as long asB. whetherC. ifD. even though20. Ask him to ring me up if you _____ him.A. seeB. sawC. would seeD. will see21. It’s so late. I don’t think he ______ come.A. wouldB. shouldC. is going toD. shall22. If people _____ polluting the air, animals and plants will die soon.A. don’t stopB. didn’t stopC. shall not stopD. haven’t stopped23. If you _____ an interesting day out, ______ the Science Museum.A. want; visitingB. want; visitC. want to; visitD. wanting; visit24. If the pure water is heated to 100 centigrade degrees, it ______ boil.A. is going toB. willC. wouldD. is to25. Is a dictionary available, _____ so, where?A. ifB. if isC. and ifD. and if is1—5 BAABB 6—10 DDCAC11—15 CBACC 16—20 CCBCA 21—25 CABBC最后一练——1.If you _____ to the party, you’ll have a great time. A. will go B. went C. go D. going2. It will be a long time ____ Peter _____ his work.A. since, has finishedB. after, finishesC. when, will finishD. before, finishes.3. What will father _____ us from Japan? A. take B. bring C. carry D. make4. Weifang is famous ______ kites. A. for B. to C. on D. with5．I ____ her the answer if she ____me.A. can tell, will askB. will tell, will askC. would tell, askD. will tell, asks6. – 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 rain7.—Do you know when he will come back tomorrow?--Sorry, I don’t know. When he ____ back, I’ll tell you.A. comesB. will comeC. comeD. may come8. What will you do if you _____ to the old folk’s home visit?A. goB. wentC.goingD. will go9. If I eat ____ food, I’ll be very fat.A. too manyB. many tooC. too muchD. much too10. I’ll give the book to him if he ___ here next Sunday.A. will comeB. comesC. is comingD. came11. There ____an English film in our school tomorrow.A. is going to haveB. will haveC. is going to beD. has12. Could you tell us where ____？A. will the next Olympic Games heldB. the next Olympic Games will be heldC. would the next Olympic Games be heldD. the next Olympic Games would be held13. When my mother returned last night, I ____ a book.A. readB. am readingC. was readingD. am going to read14.What ____ you ____ when it began to rain?A. do, doB. were, doingC. are, doingD. did, do15. I’ll wake you up when he ____back.A. willB. is going to comeC. comesD. come1---5 CDBAD 6---10 DAACB 11---15 CBCBC。

if条件状语从句讲解与练习

if引导的条件状语从句1) 用法：(1)条件状语从句通常由连词if引导，意为“如果、假如”，主句不能用be going to表示将来，而应该用shall，will。

If you leave now, you are never going to regret it. (错误)If you leave now, you will never regret it. (正确)(2)if “如果”，引导条件状语从句，主句用一般将来时，从句则用一般现在时，如：If it rains tomorrow, I shan’t climb the hills.(3)另外，主句是祈使句或含有情态动词，从句也用一般现在时。

如：Please call me if he comes next Sunday.Can you call the policeman if you are in the trouble.注意宾语从句中的if与条件状语从句if的区别。

宾语从句中的if“是否”相当于whether，引导宾语从句，时态需根据语境确定。

如果主句用一般现在时，从句可以根据具体情况选用时态，如果主句用一般过去时，从句必须用过去式的某种形式。

I don't know if it will rain tomorrow. 我不知道明天是否会下雨。

Our teacher said there was going to be a football match the next month.我们说下月将有场足球比赛。

【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’t 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 ________（know）it.6. You will hurt your teeth if you ________（eat）too much candy.7. If you gave me a toy car, I _________（be）very happy.8. I would get the prize if I _________（work）hard.9．If she ______ (finish ) work early ,she ______(go) home.10．If the weather______（be）fine，we_______(go)for a walk .11. If I_____(have) time tonight ,I _______(finish) the book I’m reading.12. If it ______(rain) next weekend , we_______(not be able to ) plant the vegetable .13. If it_______(rain),we______(stay) at home .14.If she______(arrive) ,she _____(phone) me .15. If he_____(call),tell him I’ll ring back .if 条件状语从句的时态练习一．在正确的答案下划一条线。

if真实条件句语法及练习

1．一般现在时1. 1含be动词的一般现在时1. 含义：表示一般性，经常性的动作或一般性事实。

2. 谓语动词的构成：am / is / are3.句型：1) . 肯定句：主语＋ be动词＋其他。

注意：句子的第一个单词的首字母大写; 句末加实心点。

2) . 否定句：主语＋ be动词＋ not ＋其他。

注意：句子的第一个单词的首字母大写; 在be动词后面加not ; 句末加实心点。

3) . 一般疑问句：Be动词＋主语＋其他？注意：把be动词提前; 句子的第一个单词的首字母大写; 第一人称改为第二人称;④句末加问号。

肯定回答：Yes, 主语＋ be 动词。

否定回答：No, 主语＋ be 动词＋ not.4) .特殊疑问句：特殊疑问词＋一般疑问句？1.2含实义动词的一般现在时1. 含义：表示现在的事实或状态表示现在的习惯或反复的动作2. 谓语动词的构成：do/does3. 动词的第三人称单数形式的变化形式（动词的适当形式）一般情况下，直接在动词后面加s。

例：want -wants以s,x,sh,ch,o结尾的动词，加es。

例：wash -washes ; go - goes; do - does以辅音字母加y结尾的动词，变y为i再加es。

例：try - tries4. 句型：肯定句: 主语＋动词原形＋其他。

（主语非三单）主语＋动词的适当形式＋其他。

（主语是三单）否定句: 主语＋do＋not＋动词原形＋其他。

（主语非三单）主语＋does＋not＋动词原形＋其他。

（主语是三单）一般疑问句：Do＋主语＋动词原形＋其他？（主语非三单）肯定回答:Yes, 主语＋do. 否定回答:No, 主语+do+not.Does＋主语＋动词原形＋其他？（主语是三单）肯定回答：Yes,主语+does. 否定回答: No, 主语＋does＋not.特殊疑问句：特殊疑问词＋一般疑问句？二、一般将来时2.1 Be going to 句型1. 含义：打算要做某事准备做某事2. 谓语动词的构成：be going to + V原3. 句型：肯定句：主语 + be going to + V原+ 其他。

If条件句

3.与过去事实相反的虚拟条件句构成条件状语从句主句
If + 主语 + 动词过去完成主语+ would, should, could, might+ have + 式过去分词
例如 If there had been no air in the tube, the result would have been better.
某英文网站正在开展关于“高一是否该分文理科”的讨论。请你根据下面所给的要点提示，用英语写一篇短文，描述目前存在的两种看法，并陈述你的观点，以便向该网站投稿。赞成分科的人认为1. 可集中精力学习；2. 减轻学习压力； 3. 学自己喜欢的学科。反对分科的人认为1. 学科知识受限制；2. 影响个人素质提高； 3. 对科目缺乏深入了解。你的观点…… 注意：1．词数：120词左右； 2．参考词汇：素质：quality n. 分科：division n. 全面的：all-round adj. 3. 短文的开头已给出，不计入词数。
I.虚拟语气用在条件状语从句中虚拟语气用在条件状语从句中，通常从句由连词if 引导。 1.与现在事实相反的虚拟条件句条件状语从句 If +主语 +动词过去式(be的过去式用 were) 主句主语+ would, should, could, might+动词原形
例 If I feared death, I wouldn’t be a Party member. 怕死就不做共产党员。 If there were no air, we couldn’t live. 如果没有空气，我们就不能生活。
if 引导的条件句 if引导的条件句表示在某种条件下，会导致另一事发生。句式为if从句+ 主句。中文意思是“如果某事发生（或不发生），另一事就（不）发生”。通常分以下两种情形：一、真实条件句二、虚拟条件句

(完整版)if引导的条件状语从句精讲与专题练习(可编辑修改word版)

初中英语――if 引导的条件状语从句引导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，主句中某种情况发生的概率也是很高的。

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。

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。

另外你还要注意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/canIf the fog gets thicker the plane may/might be diverted. 如果雾在大一些，飞机可能就会改在别的机场降落。

If it stops snowing we can go out. 如果雪停了，我们就可以出去。

if 引导的条件句

if 引导的条件句if引导的条件句表示在某种条件下，会导致另一事发生。

句式为if + 从句，主句。

中文意思是“如果某事发生（或不发生），另一事就（不）发生”。

通常分以下两种情形：一、真实条件句1. if从句和主句都用一般现在时，表示客观真理或习惯和持续发生的事情。

如：If the moon goes near the earth, the tide goes high. 如果月亮离地球距离近，潮水就高。

2. if从句用一般现在时，主句用一般将来时，表示从句中的动作如果发生，那么主句中的动作也将发生。

如：If it stops raining later this afternoon, we will eat out. 如果今天下午晚些时候雨能停，我们就出去吃饭。

3. if从句用一般现在时，主句用祈使句，表示给某人提建议或命令某人做某事，及提出建议或请求。

如：If you are not likely to be in town, please let me know. 如果你不可能在城里，请让我知道。

二、虚拟条件句虚拟条件句，也称非真实条件句，表示在某种假想的条件下，将导致某事发生。

从句中所陈述的事情仅仅只是说话者的想法，不是事实，也不可能发生。

1. if从句用一般过去时（did / were），主句用would / could / should / might + do，表示现在不可能发生的事情，if 从句中所陈述的事情与现在的事实相反。

如：If I were Liu Xiang, I would train hard for the 2008 Olympic Games.如果我是刘翔，我会为了2008年奥运会努力训练。

2. if从句用一般过去时（did / were或were to + do），主句用would / could / should / might + do。

表示将来不可能发生的事情，if 从句中所陈述的事情与将来的事实相反。

if引导的条件状语从句练习题

if引导的条件状语从句练习题条件状语从句是英语中非常重要的语法结构，它用来表达一个动作或状态的发生依赖于另一个条件的成立。

以下是一些练习题，帮助学生更好地理解和运用if引导的条件状语从句。

1. 填空题：- 如果明天下雨，我们就会取消野餐。

(If it ______ tomorrow, we will ______ the picnic.)2. 改错题：- 如果你努力学习，你会通过考试。

(If you study hard, you will pass the exam.) (正确)3. 翻译题：- 如果你明天有空，我们可以一起去看电影。

(If you are free tomorrow, we can go to the movies together.)4. 选择题：- I will go to the party if I ______ my work before 5 p.m.A) finishB) finishedC) will finishD) have finished5. 连词成句：- If / you / a ticket / buy / will / you / the concert / attend.(If you buy a ticket, you will attend the concert.)6. 完形填空：- I promise to help you with your homework ______ you ask me.A) ifB) unlessC) untilD) because7. 转换句子：- He will go to the beach if the weather is good.- The weather must be good for him to go to the beach.8. 情景对话填空：- A: What will you do if you win the lottery?B: If I win the lottery, I ______ travel around the world.(A) will(B) would(C) am going to(D) have been going to9. 写作练习：- 写一段对话，其中包含至少两个if引导的条件状语从句。

初中英语If引导的条件状语从句

中考英语专题复习if引导的条件状语从句一、真实条件状语从句：表示假设在某条件的存在下，主句中的主语可能会发生某种动作或存在某种状态。

主从句时态；（1）从句：一般现在时、现在进行时、现在完成时------主句：一般将来时（2）从句：一般现在时，-------- -----------------------------主句：含情态动词（3）从句：一般现在时，---------------------------------------主句：祈使句※:（4）如果主句描述的是客观真理，采用一般现在时。

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。

另外你还要注意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。

（1）．if从句用现在进行时，主句用一般将来时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。

（1）．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（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. 如果雾在大一些，飞机可能就会改在别的机场降落。

if句式的用法

千里之行，始于足下。

if句式的用法if句式是英语中常用的一种条件句句式，其结构为“if + 条件句，主句”。

if句式用来表达假设、条件、可能性等含义。

在下面的文章中，我将具体介绍if句式的用法，并举例说明。

一、表示真实状况的if句式假如if后面的条件句表示的是实际上存在的状况，那么主句中的内容就是对这个存在状况所作出的描述或推断。

例句1：If it rains, we will stay at home.假如下雨，我们就呆在家里。

例句2：If you study hard, you will pass the exam.假如你努力学习，你就会通过考试。

例句3：If she is tired, she goes to bed early.假如她累了，她就早点睡觉。

二、表示假设状况的if句式假如if后面的条件句表示的是一种假设、虚拟的状况，那么主句中的内容通常是对这种假设状况所作出的推断、建议或者标明可能性。

例句1：If I were you, I would apologize to her.假如我是你，我会向她赔礼。

例句2：If you had studied harder, you would have passed the exam.假如你更努力学习了，你本可以通过考试的。

第1页/共3页锲而不舍，金石可镂。

例句3：If it doesn't rain tomorrow, we will have a picnic.假如明天不下雨，我们就去野餐。

三、表示习惯、规章的if句式if句式还可以用来表达习惯、规章、定理等。

例句1：If you heat water to 100 degrees Celsius, it boils.假如你将水加热到100摄氏度，它就会沸腾。

例句2：If it is Sunday, I always go shopping.假如是星期天，我总是去购物。

例句3：If you touch fire, you will get burned.假如你触碰火，你会被烧伤。

If引导的条件状语从句讲解与练习

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 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 is40aaaaa 学生缴费日期表aa。

if引导真实条件句时态用法

if引导真实条件句时态用法
当if引导真实条件句时，一般使用一般现在时态来表示一个普遍的真实情况或状态。

例如：
- If it rains, the ground gets wet.（如果下雨，地面就会湿。

）
- If I eat too much, I feel full.（如果我吃太多，我就会觉得饱。

）
- If you work hard, you will succeed.（如果你努力工作，你就能成功。

）
然而，有时也可以使用一般过去时态来表示过去的真实条件。

这通常发生在间接引语中，当主
句是过去时态时。

例如：
- She said that if it rained, they would cancel the picnic. （她说如果下雨的话，他们会取消野餐。

）总的来说，使用一般现在时态来引导真实条件句是最常见的用法。

if引导的条件状语从句总结+习题

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。

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一．一般现在时
1. 1含be动词的一般现在时
1.含义：表示一般性，经常性的动作或一般性事实。

2.谓语动词的构成：am / is / are
3.句型：
1). 肯定句：主语＋be动词＋其他。

注意：句子的第一个单词的首字母大写; 句末加实心点。

2). 否定句：主语＋be动词＋not ＋其他。

注意：句子的第一个单词的首字母大写; 在be动词后面加not ; 句末加实心点。

3). 一般疑问句：Be动词＋主语＋其他
注意：把be动词提前; 句子的第一个单词的首字母大写; 第一人称改为第二人称;④句末加问号。

肯定回答：Yes, 主语＋be 动词。

否定回答：No, 主语＋be 动词＋not.
4).特殊疑问句：特殊疑问词＋一般疑问句
含实义动词的一般现在时
1.含义：表示现在的事实或状态表示现在的习惯或反复的动作
2.谓语动词的构成：do/does
3.动词的第三人称单数形式的变化形式（动词的适当形式）
一般情况下，直接在动词后面加s。

例：want - wants
以s,x,sh,ch,o结尾的动词，加es。

例：wash - washes ; go - goes; do - does
以辅音字母加y结尾的动词，变y为i再加es。

例：try - tries
4.句型：
肯定句: 主语＋动词原形＋其他。

（主语非三单）
主语＋动词的适当形式＋其他。

（主语是三单）
否定句: 主语＋do＋not＋动词原形＋其他。

（主语非三单）
主语＋does＋not＋动词原形＋其他。

（主语是三单）
一般疑问句：Do＋主语＋动词原形＋其他（主语非三单）
肯定回答:Yes, 主语＋do. 否定回答:No, 主语+do+not.
Does＋主语＋动词原形＋其他（主语是三单）
肯定回答：Yes,主语+does. 否定回答: No, 主语＋does＋not.
特殊疑问句：特殊疑问词＋一般疑问句
二、
一般将来时
Be going to 句型
1.含义：打算要做某事准备做某事
2.谓语动词的构成：be going to + V原
3.句型：
肯定句：主语+ be going to + V原+ 其他。

否定句：主语+ be + not + going to + V原+ 其他。

一般疑问句：Be + 主语+ going to + V原+ 其他
肯定句：Yes, 主语+ be. 否定句：No, 主语+ be + not.
④特殊疑问句：特殊疑问词＋一般疑问句
will/shall
1.含义：表示将要做还没有做
2.谓语动词的构成：will / shall + V原
3.句型：
肯定句：主语+ will / shall + V原+ 其他。

否定句：主语+ will / shall + not + V原+ 其他。

一般疑问句：will / shall + 主语+ V原+ 其他
肯定句：Yes, 主语+ will / shall. 否定句：No, 主语+will / shall + not.
④特殊疑问句：特殊疑问词＋一般疑问句
If 真实条件句：(主将从现)
1. if意为“如果”，引导条件状语从句，可放在主句后，也可放在主句前，常用逗号隔开。

2. 含if引导的条件状语从句的复合句中，主句有下列情况时，从句用一般现在时
表示将来意义：
当主句为一般将来时态时。

如：If your daughter comes, I will call you up.
当主句是祈使句时。

如：Please stay at home if it rains tomorrow.
当主句的谓语含有can, may, must等情态动词时。

如：If he goes on smoking, it may be very bad for his health.
当主句的谓语是hope, wish, want等动词时。

如：I want to go there if the rain stops.
一.单项选择
you _____ to the party, you’ll have a great time
A. will go
B. went
C. go
D. going
2．I ____ her the answer if she ____me.
A. can tell, will ask
B. will tell, will ask
C. would tell, ask
D. will tell, asks
3. What are you going to do tomorrow --We’ll go to the library tomorrow if it ___.
A. isn’t rain
B. rain
C. won’t rain
D. doesn’t rain
4. What will you do if you _____ to the old folk’s home visit
A. go
B. went D. will go
5. I’ll give the book to him if h e ___ here next Sunday.
A.will come
B. comes
C. is coming
D. Came
1.If he hard, he will get good grades.
2. A. study B. Studies C. will study D. Studied
3.I want to know if Mary to the party tomorrow.
A. go
B. Went
C. will go
D. goes
3. Everyone must dress up. If you , they won’t let you in.
A. don’t
B. won’t
C. can’t
D. mustn’t
4. Mary will go to Sanya if she a five-day trip.
A. have
B. Had
C. will have
D. has
5. If he comes late, he will miss the train.
A. and
B. So
C. /
D. or
二、用所给词的适当形式填空
you ________(feel) tired, you ____________ (have) to have a rest.
2. Where ________ he ____(see) the film if he _________(have) time
3. If there ________(be) fewer trees, there __________( be) more pollution.
4. He __________(dress) more casually if he ________( not work) on weekends.
5. If Marcia _______(live) alone, she __________( keep) a pet parrot.
6. Lana ________ (buy) a new dress if the old one ____(be) out of style.
twins ___________(fight) if they__________(argue).
8. I __________(have) a bake sale if I ____(need) money for education.
9. Peter _______( send) me a beautiful souvenir if he _______(tour) Spain.
10. If Mr Green _______ (say) I am hard- working, my parents ______( feel) glad.
______(go) to the beach if it________ ( not rain) this week.
12. _____they _____( have) a match if the . teacher _____(be) busy
____(write) a letter to his grandparents if he ____(get) his report card this week.
14. If she ______(get) up late, she _________ ( not catch) the early bus.
________(major) in English if he ____(pass) the exams in Peking University.。

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