2019最新中考语法专题条件状语从句(讲解练习)

中考英语条件状语从句练习题50题(答案解析)1.If it rains tomorrow, we ______ stay at home.A.willB.wouldC.shouldD.shall答案解析：A。

if 引导的条件状语从句，遵循“主将从现”原则，即主句用一般将来时，从句用一般现在时。

这里从句是“it rains tomorrow”，是一般现在时表将来，主句要用will 加动词原形表示一般将来时。

B 选项would 用于过去将来时或表示委婉语气；C 选项should 表示“应该”；D 选项shall 用于第一人称。

2.If I have time, I ______ help you with your homework.A.willB.wouldC.shouldD.must答案解析：A。

同样遵循“主将从现”原则，主句用一般将来时，所以选will。

B 选项would 用于过去将来时；C 选项should 表示“应该”；D 选项must 表示“必须”。

3.If you study hard, you ______ get good grades.A.willB.wouldC.shouldD.must答案解析：A。

“主将从现”，主句用一般将来时，选will。

B 选项would 用于过去将来时；C 选项should 表示“应该”；D 选项must 表示“必须”。

4.If he ______ early, he can catch the bus.A.gets upB.will get upC.got upD.would get up答案解析：A。

“主将从现”，从句用一般现在时，he 是第三人称单数，所以动词用gets up。

B 选项will get up 是一般将来时，用在主句；C 选项got up 是一般过去时；D 选项would get up 用于过去将来时。

5.If we go to the park, we ______ have a picnic.A.willB.wouldC.shouldD.must答案解析：A。

2019年秋八年级上册单元语法讲与练if引导的条件状语从句语法精讲1.条件状语从句的含义由一个主句和一个或一个以上的从句构成的句子叫复合句。

在复合句中作状语的句子叫作状语从句。

状语从句根据它表达的意思可分为很多种，if引导的句子在复合句中表示条件，作主句的条件状语，因此称为条件状语从句。

If you don’t hurry，you’ll be late.如果你不快点，你将会迟到的。

If he comes，let me know.如果他要来，通知我。

2.if引导的条件状语从句的结构if引导的条件状语从句在句中的位置比较灵活，可以放在主句之前(这时要和主句用逗号隔开)，也可以放在主句的后面(不用逗号)。

条件状语从句的结构为：if+陈述句，主语+谓语(=主语+谓语+if+陈述句)。

意为“如果……就……”。

If you ask him，he will tell you the answer.如果你问他，他就会告诉你答案。

I hope to visit her if I’m free.如果我有空，我希望去看望她。

3.if引导的条件状语从句与主句时态的一致性在复合句中，从句中动词的时态在一定程度上受到主句动词时态的制约，英语语法中称为时态呼应。

（1）在含有条件状语从句的复合句中，如果主句是一般将来时，从句则用一般现在时代替一般将来时表将来。

If it rains，I will stay at home.如果下雨，我将待在家里。

If you study hard，you will pass the examination.如果你努力学习，就能通过这次考试。

（2）如果主句含有must，may，can等情态动词，从句也要用一般现在时。

If you drive too fast，you may have an accident.如果你把车开得太快，你可能会出事故。

You must stop if the traffic light is red.如果红灯亮了，你必须停下来。

中考英语条件状语从句练习题50题(答案解析)1. If it ______ tomorrow, we will have a picnic in the park.A. don't rainB. doesn't rainC. won't rainD. not rain答案：B。

解析：在条件状语从句中，如果主句是一般将来时，从句要用一般现在时表将来。

这里it是第三人称单数，否定形式应该是doesn't rain，A选项don't用于第一、二人称和复数主语；C选项won't rain是一般将来时，不符合条件状语从句的时态要求；D选项not rain形式错误。

2. I will call you ______ I get home.A. as soon asB. untilC. whileD. since答案：A。

解析：as soon as表示“一……就……”，句意为我一到家就给你打电话，符合逻辑。

until表示“直到……”，如果用until，句子逻辑不通；while表示“当……的时候”，强调两个动作同时进行，在这里不合适；since表示“自从；既然”，不符合句子语境。

3. You can't pass the exam ______ you study hard.A. ifB. unlessC. whenD. after答案：B。

解析：unless等于if not，表示“除非，如果不”，句意为你不能通过考试，除非你努力学习。

if表示“如果”，逻辑与句子不符；when表示“当……的时候”；after表示“在……之后”，这三个选项都不能准确表达句子的逻辑关系。

4. ______ he comes back, please let me know.A. WhereB. HowC. WhenD. Why答案：C。

解析：when引导条件状语从句，表示“当……的时候”，句意为当他回来的时候，请告诉我。

状语从句状语从句知识精讲一、状语从句概述二、状语从句的分类1. 时间状语从句用表示时间的连词连接一个句子作状语，这样的主从复合句就是时间状语从句，具体用法如下表。

2. 结果状语从句结果状语从句的从句部分是补充说明主句中谓语动词发生的结果的，通常位于主句之后。

引导结果状语从句的从属连词如下表。

3. 目的状语从句：从句部分是用以补充说明主句中谓语动词发生的目的。

1). so that 以便……（达到某种目的）如：You must speak louder so that you can be heard by all.你要大点声说，这样大家就都能听到你了。

2). in order that 为了……，如：She got up early in order that she could get to school on time.=She got up early in order to get to school on time.为了能够准时到校，她很早起床。

4. 条件状语从句由连接词if或unless引导的状语从句叫做条件状语从句。

注意：1). unless 从句里的谓语只能是肯定式，因为unless本身表示否定；unless=if not，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.如果你不是很累，我们出去散个步吧。

2). 在真实条件句中，主句不能用be going to表示将来，该用shall, will.如：If you will(愿意) wait a minute, I’ll go and tell my mother that you are here.如果你愿意等一分钟，我将去告诉我妈妈你在这里。

3). 下列从句中的will不是将来时助动词，而是情态动词。

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 besorry.—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 chips and 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。

中考英语条件状语从句练习题50题含答案解析1.If it rains tomorrow, we _____ stay at home.A.willB.wouldC.shallD.should答案解析：A。

if 引导的条件状语从句，遵循“主将从现”原则，即主句用一般将来时，从句用一般现在时。

B 选项would 用于过去将来时或表示委婉语气；C 选项shall 一般用于第一人称；D 选项should 表示“应该”，不符合语境。

2.We will go for a picnic if the weather _____ fine.A.isB.will beC.wasD.would be答案解析：A。

同样遵循“主将从现”原则，从句用一般现在时，the weather 是第三人称单数，所以用is。

B 选项will be 是将来时；C 选项was 是过去时；D 选项would be 用于过去将来时或表示虚拟语气。

3.If he _____ hard, he will pass the exam.A.studiesB.studiedC.will studyD.would study答案解析：A。

“主将从现”，从句用一般现在时，he 是第三人称单数，studies 正确。

B 选项studied 是过去时；C 选项will study 是将来时；D 选项would study 用于过去将来时或表示虚拟语气。

4.I will go shopping with you if I _____ free.A.amB.will beC.wasD.would be答案解析：A。

“主将从现”，从句用一般现在时，I 后面用am。

B 选项will be 是将来时；C 选项was 是过去时；D 选项would be 用于过去将来时或表示虚拟语气。

5.If she _____ early, she can catch the bus.A.gets upB.got upC.will get upD.would get up答案解析：A。

状语从句状语从句考点讲解以及针对性训练（时间，条件，原因，地点，结果，比较，让步，目的状语从句的用法）时间状语从句【经典剖析】1．时间状语从句用一般现在时表示将来。

连接时间状语从句的连接词有：when(当……的时候)，while（当……的时候），as(当……的时候)，once( 一旦)，till( until)（一直到……，直到……才），by the time(到……时)，as soonas（一……就）the moment(一……就)．since(自从……)．before(在……前)．after(左……后)2．when，while，as均可表示“当……的时候”。

when强调“特定时间”，表示主句谓语动词的动作与从句谓语动词的动作是同时发生的，或从句的动作发生在主句的动作之前；while表示的时间是一段，而不是一点，as多用在口语中，强调“同一时间”或“一前一后”，有时还有“随着”的含义。

I'll go on with the work when／come back tomorrow．我明天回来后会继续做我的工作。

When spring came, he felt like a trip.春天来了，他想去旅游。

When he was eating his breakfast, he heard the doorbell ring.(强调吃饭的时候）。

While he was eating his breakfast, he heard the doorbell ring.（强调吃饭的过程中）While I was studying, you fell asleep.当我学习的时候，你睡着了。

Just as he was speaking, there was a loud explosion.正当他要说话时，传来很大的爆炸声。

As I was going out, it began to rain.（强调两个动作先后发生）As spring warms the good earth，all flowers begin to bloom．(as有“随着”的含义)3．till／until，表示“一直到……”，主从句都用肯定式；表示“直到……才”，主句否定，从句肯定。

最新中考语法专题条件状语从句(讲解练习)条件状语从句是我们日常生活中经常使用的语法结构，常用的引导词有if、unless和as/so long as。

下面将分别讲解这些引导词的用法。

1.if从句+祈使句，“如果……，就……”。

例如，“如果你感觉不舒服，就去看医生吧。

”、“如果你想了解更多内容，现在就打电话吧。

”、“如果你去伦敦，一定要去参观科学博物馆。

”2.主将从现。

例如，“如果我晚饭后开始，睡觉前我就能完成。

”、“如果她来得及时，就可以和我们一起去。

”3.if条件状语从句和并列句的转换。

这里给出一些练题，例如，“跑得快，否则你会迟到。

”可以转换为“如果你不跑得快，你会迟到。

”、“你可以带足够的钱去买字典。

”可以转换为“如果你带足够的钱，你可以买字典。

”4.XXX“除非”。

例如，“不要离开大楼，除非我准许。

”、“除非你已完成了作业，否则我不允许你看电视。

”最后，还有一个常用的转换方法，就是将if从句转换为否定句，例如“赶快，否则你会迟到。

”可以转换为“如果你不赶快，你会迟到。

”If he wants to see me。

you can tell him to wait.2.You’ll be in trouble ________ XXX.XXX on time。

you’ll be in trouble.3.________ you study hard。

you will pass the test.If you study hard。

you will pass the test.4.I won’t be able to come to the party ________ I finish this project.Unless I finish this project。

I won’t be able to come to the party.5.You can borrow my bike ________ you promise to bring it back before 5pm.XXX it back before 5pm.。

课后练习32 状语从句温馨提示：为满足部分老师批改时的评估需要，本课时的题量已按满分100分来设置，请需要的老师自行规划。

一、用适当的连词（词组）填空1. Savannah was moved by the risks they faced,____________ she made 200 “thank-you”cards for them.2. You can do everything well____________ you put your heart into it.3. I haven’t heard from him____________ he went to America.4. We won’t give up____________ we have failed ten times.5. I’ll tell her about the important news____________ I see her.6. He got a job at the airport____________ he’d left school.7.____________ all of them were reading in the classroom, a boy ran into it quickly.8. Were you writing____________ the teacher came in?9.____________ years go by, China is getting stronger and richer.10. He didn’t go to bed____________ he finished all his work.11. There are heavy clouds in the sky____________ it is going to rain.二、用方框中所给词或词组的适当形式填空，每个词或词组限用一次wherever even though finishno matter how as soon as1. —Will you go to the movies with me?—Not until I have____________ my homework.2.____________ well you drive, you must drive carefully.3. I will never forget that terrible accident____________ it happened so long ago.4.____________ you go, you can always get help from others.5. He will come here right away____________ he hears the news.三、句型转换1. Jack is so short that he can’t reach the book on the shelf. （改为同义句）Jack is____________ short to reach the book on the shelf.2. The teacher began his class. All the students were seated.（用not...until合并为一句）The teacher_______________________ his class____________ all the students were seated.3. Hurry up, or you’ll miss the early bus. （改为同义句）____________you____________ hurry up, you____________catch the early bus.4. The children have to stay inside because of the hot weather. （改为状语从句）The children have to stay inside______________________________________________ hot.5. Miss Gao wrote a letter to her friend at once after she had got to Shanghai. （改为同义句）Miss Gao__________a letter to her friend____________________________she__________ Shanghai.四、阅读理解（2018·宁波市南山县区模拟）Why do Americans worry about their weight, while the French, who eat rich food, continue to stay thin? Now a study by Cornel University suggests how life-style and decision about eating may affect（影响）weight. Scientists say that the French tend to（倾向于）stop eating when they feel full. However, Americans tend to stop when their plate is empty or their favorite TV show is over.According to Dr. Joseph Mercola, a health expert, the French see eating as an important part of their lifestyle. They enjoy food and spend a long time at the table, while Americans see eating as something to be squeezed（挤压）between the other daily activities. Mercola believes Americans lose the ability to sense when they are actually full. So they keep eating after the French have stopped. He also points out that Americans drive to huge supermarkets to buy canned（罐装的）and frozen foods for the week. The French, instead, tend to shop daily, walking to small shops and farmers’markets. They can buy fresh fruit, vegetables, eggs and very good meat for each meal.After a visit to the United States, Mireille Guiliano, author of French Women Don’t Get Fat, decided to write about the importance of knowing when to stop rather than suggest how to avoid food. Today she con-tinues to stay thin and hardly goes to the gym.Meanwhile, the research also shows that recent lifestyle changes may be affecting French eating habits.Today the rate of obesity（肥胖率）—or very overweight—among adults is only 6%. However, as American food gets popular and the young French say no to the old traditions, the obesity rate among French children has reached 17%—and is growing.（）1. In what ways are the French different from Americans according to Dr. Joseph Mercola?A. The French go shopping at supermarket more often.B. The French squeeze eating between the other activities.C. The French regard eating as a key part of lifestyle.D. The French usually eat too much canned and frozen food.（）2. Compared with the adults, the French children get____________ .A. fatterB. thinnerC. healthierD. lazier（）3. This text is mainly about____________.A. Americans and the FrenchB. lifestyle and obesityC. children and adultsD. fast food and overweight（）4. Where is this passage probably taken from?A. A TV interview.B. A food advertisement.C. A health report.D. A book review.五、根据短文内容和所给汉语提示，在空白处写出单词的正确形式。