if引导的条件状语从句用法有哪些

if引导的条件状语从句用法有哪些（共2篇）

1.if引导的条件状语从句用法有哪些 篇一

if 条件状语从句专项练习

一、用所给词的适当形式填空

1.If 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.7.The twins ______________(fight)if they_______________(argue).8.If the telephone ___________(ring), answer it.9.Peter _____________(send)me a beautiful souvenir if he ________________(tour)Spain.10.If Mr Green ___________(say)I am hard-working, my parents _____________(feel)glad.11.I ____________(go)to the beach if it________________(not rain)this week.12.__________they __________(have)a match if the P.E.teacher _____________(be)busy?

13.He ___________(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.15.Don’t go out tomorrow if it__________(rain).二、根据汉语意思完成句子

1.如果你请求他，他会帮你的If you ________him, he _________ __________you

2.如果她早点儿起床，就有时间在家里吃早餐

If she___________________a little earlier, she’ll have time to eat breakfast at home.3.如果你参加聚会，你将会过得很开心。

If you__________ the party ,you_________ _________ a great time.4.如果明天下雨，我们将不去野餐

If it __________tomorrow, we _________ ___________ for a picnic.5.如果你经常听英文歌，你将会喜欢英语

If you often __________ __________English songs, you________ _________English.6.如果他到的晚了会发生什么事情？

What _______________ if he _____________ late?

7.如果努力学习，你就会取得好成绩。

If you__________ _________, you ___________ good _____________.8.他如果看电视太久了，他的父母会不高兴。

If he _________ TV too much, his parents __________ __________ unhappy.9.如果我们为他组织生日聚会，大家都会来的。

Everyone ________________ if we _____________ a birthday party __________ him.10.如果明天不下雨，我会和你一起去公园的。

If it ____________________ tomorrow, I ______________ go to the park _________ you.11.如果她起得晚了，就会旅游迟到的。

She;__________________________ the trip if she ___________________.12.如果他有空，他会帮助你的。

If he _________________, he _________________you.13.如果Tom考试不及格，他就没有机会上高中了。

Tom _________have the ________to go to the high school if he ___________ the exams.14.你如果抄同学的作业就不能学好各门功课。

You _________ _________ good at all the subjects if you _________ the other students’homework.1

三、单项选择

1.If you _____ to the party, you’ll have a great time.A.will goB.wentC.goD.going

2． I ______ her the answer if she _______me.A.can tell, will askB.will tell, will askC.would tell, askD.will tell, asks

3.– 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 rain

4.—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 come

5.What will you do if you _____ to the old folk’s home visit?

A.goB.wentC.goingD.will go

6.If I eat ____ food, I’ll be very fat.A.too manyB.many tooC.too muchD.much too

7.I’ll give the book to him if he ___ here next Sunday.A.will comeB.comesC.is comingD.came

8.There ____an English film in our school tomorrow.A.is going to haveB.will haveC.is going to beD.has

9.When my mother returned last night, I ____a book.A.readB.am readingC.was readingD.am going to read

10.What ____ you ____ when it began to rain?

A.do, doB.were, doingC.are, doingD.did, do

11.I’ll wake you up when he ____back.A.willB.is going to comeC.comesD.come.The volleyball match will be put off(推迟)if it

A.will rainB.rainsC.rained

13.I’ll go to meet you，if I__________free then.A.would beB.will beC.am

14.Be careful, if you____________want to make mistakes.A.won’tB.don’tC.didn’t

15.Work hard if you_________to get a good mark.A.wantedB.wantingC.want

16.There is going to_______sports meeting next week.If it ________, we’ll have to cancel it..A.be;will rainB.have;will rainC.be;rains

17.If he_________, I_________go swimming alone.A.doesn’t come, will goB.won’t come;will goC.will come;won’t go

18.If you _________a chance to study in a foreign country, just take it.A.gettingB.getC.will get

19.Frank___________a film if he’s free next Saturday.A.seeB.sawC.will see

2.透析if引导的四种条件状语从句 篇二

下面以动词do为例分别讲解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。如：

If ice is heated，it melts.如果冰被加热，就融化了。（表示科学理论的条件句）

If you heat water，it boils. 如果你烧水，水会开。（表示科学理论的条件句）

If the temperature drops to 0 ℃，water freezes. 如果温度降至零摄氏度，水就会结冰。（表示科学理论的条件句）

If I am late for training，my coach gets angry. 如果我培训迟到了，我的教练会很生气。（表示客观事实的条件句）

Im happy to go to the party if you come with me.如果你和我一起，我就愿意去参加晚会。（意思是你去我才去）（表示客观事实的条件句）

In time of serious accidents，if we know some basic things about first aid，we can save lives. 在严重事故的时候，如果我们了解一些基本的急救常识，我们可以挽救生命.（表示客观事实的条件句）

If I felt any doubt，I always asked my teachers. 我一有了疑惑，总要问我的老师。（表示现在习惯动作，其从句和主句谓语动词为一般现在时；如表示过去习惯动作，其从句和主句谓语动词为一般过去时。）

请注意，在零条件句（即绝对真实条件句）里，主句和从句都使用现在时态，而且连词if相当于when。

【例题】 neighbors want to get along well with each other，they have to show their tolerance.

【答案与解析】 If/When。本句可以用if也可以用when，主从句都是一般现在时，属于绝对真实条件句，if从句是表示客观事实的条件句，所以也可以用when。句意：如果邻居间想要友好相处，他们就必须表现出能够对他人容忍的一面。

【例题】 If steel is heavier than water，why are ships able to float on the sea？

【解读】 If steel is heavier than water是一个条件状语从句，疑问句why are ships able to float on the sea。句意：既然铁重于水，为什么船可以浮在水面上。

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。如：

I will tell him about it if he comes. 要是他来的话，我就把此事告诉他。

I will be happy to go to the party if you come with me. 如果你和我一起去的话，我就会很开心地去参加晚会。（也就是说你去不去，我都得去）

If you want to make your dream come true，the first thing you have to do is to wake up.

若要梦想实现，先要从梦中醒来。

You will get the full mark if you study hard. 如果你努力学习，你就会得满分。

If ice meets heat，it will melt. = If ice is heated，it melts.

【例题】 Thats why I help brighten peoples days.If you dont，whos to say that another person will？

【解读】 “主将从现”是指在条件状语从句和时间状语从句中，如果主句是一般将来时，从句用一般现在时替代一般将来时。本句主句是一般将来时，if条件状语从句用一般现在时代替将来。

【例题】 Peter：Unbelievable！Oh... ， you dont mind，Ill stop and take a deep breath.

【答案与解析】 if 。句意：这真是难以相信，如果你不介意，我要停下了深呼吸一下。

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。如：

If I should have/were to have / had enough money next month，I would buy a copy of “The Advanced Learners Dictionary of Current English”。如果我下个月有足够的钱，我就会买一本《现代高级英语学习词典》。

If I didnt suffer from a fear of flying，I would travel more. 我要不是晕机的话，我会多出行的。（现在实际情况是由于晕机出行较少）

If I were you，I would ask our teacher for advice. 如果我是你的话，我就请教老师。

If I wanted you to travel to Tibet with me，would you want to go？要是我让你跟我一起去西藏，你愿意去吗？（问话者问的比较委婉）

【例题】 This meeting room is a non-smoking area. I would like to warn you in advance that if you smoked here you would be fined.

【解读】 句意：这个会议室是无烟区域，我想提前警告你：如果你在这里吸烟，会被罚款。“if you smoked here you would be fined”是表示与将来情况相反的虚拟语气，表示在提前警告某人。

【例题】 If you are me，would you talk to him？

【答案与解析】 are—were。考查虚拟语气。根据句子可知，此处为虚拟语气，与现在事实不相符，故把are改成were。句意：如果你是我，你会跟他谈谈吗？

三、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。如：

If she hadnt been ill，she would have gone to work. 当时她要不是生病就去上班了。（事实是生病了而没有去上班。）

If he hadnt been so lazy in college，he would have found a much better job when he graduated. 他要不是读大学时候那么懒，毕业的时候就找到一份更好的工作了。

If he had studied harder in college，he would have found a much better job when he graduated. 他读大学时候要是再努力点，毕业的时候就找到一份更好的工作了。

If the Second World War had not broken out，the Cold War might not have come to pass. 如果第二次世界大战没有发生，冷战也不一定会出现。

【例题】 If I （not see）it with my own eyes，I wouldnthave believed it.

【答案与解析】 hadnt seen。根据后半句wouldnt have believed可以判断是表示与过去事实相反的虚拟语气，所以从句是if+主语+had+done的形式。句意：如果不是我亲眼看到，我不会相信。

【即时演练】 翻译填空，注意if 从句的用法。

1. （如果你把一个鸡蛋丢下去），it breaks.

2. If you blow on a candle， （它就熄灭了）.

3. If her mother （听从医生的建议），she would/might have got well earlier.

4. If I （没有搭错车），I wouldnt have missed the contest.

5. （如果你认为） treating a woman well means always getting her permission for things，think again.

6. （如果我是你），I would take an umbrella.

7. （如果没有水和空气），there would be no living things on the earth.

8. If （她下周一来这儿的话） next Monday，I would tell her about the matter.