2019最新中考语法专题条件状语从句(讲解练习)

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英语语法专题条件状语从句(讲解+练习,无答案)

英语语法专题条件状语从句(讲解+练习,无答案)
A. IfB. UnlessC. WhetherD. When
5. I won’t get to the party on time _____ I catch the first train tomorrow morning.
A. IfB. UnlessC. WhetherD. When
6. —Shall we go on a picnic this weekend? —Good idea! Unless it _____.
If I start after dinner, I’ll finish it before I go to bed.如果我晚饭后开始,睡觉前我就能完成。
主句也可用“情态动词+动词原形”
She may come with us if she arrives in time.如果她来得及时,就可以和我们一起去。
If you want to know more about it, call now.如果你想了解更多内容,现在就打电话吧。
Make sure you visit the Science Museum if you ever go to London.如果你去伦敦,一定要去参观科学博物馆。
2、主将从现
2. We will go camping if it _____ tomorrow.
A. Won’t rainB. didn’t rainC. doesn’t rainD. isn’t raining
3. I’m waiting for my friend. If he _____, I _____ swimming alone.
Take enough money with you, _______ _______ _______ buy the dictionary.

中考英语条件状语从句练习题50题(答案解析)

中考英语条件状语从句练习题50题(答案解析)

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年秋人教版八年级Unit 10 if引导的条件状语从句讲和练(含答案及解析)

2019年秋人教版八年级Unit 10 if引导的条件状语从句讲和练(含答案及解析)

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)

中考英语条件状语从句练习题50题(答案解析)

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。

最新2019中考英语专题讲练 状语从句(含解析)

最新2019中考英语专题讲练 状语从句(含解析)

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。

2019年八年级英语上册if引导的条件状语从句讲义(新版)人教新目标版

2019年八年级英语上册if引导的条件状语从句讲义(新版)人教新目标版

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

中考英语条件状语从句练习题50题含答案解析

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。

【教育文档】2019中考英语二轮复习 状语从句综合复习及练习.doc

【教育文档】2019中考英语二轮复习 状语从句综合复习及练习.doc

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。

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条件状语从句常用引导词:if, unless, as/so long as1、if 从句+ 祈使句,“如果……,就……”If you do not feel well, please go to see the doctor. 如果你感觉不舒服,就去看医生吧。

If you want to know more about it, call now. 如果你想了解更多内容,现在就打电话吧。

Make sure you visit the Science Museum if you ever go to London. 如果你去伦敦,一定要去参观科学博物馆。

2、主将从现If I start after dinner, I’ll finish it before I go to bed. 如果我晚饭后开始,睡觉前我就能完成。

主句也可用“情态动词+ 动词原形”She may come with us if she arrives in time. 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Hurry up, or you’ll be late. = If you don’t hurry up, you’ll be late.Study hard and you will pass the exam. = If you study hard, you will pass the exam.练习(一)句型转换1. Run fast, or you’ll be late for school._______ you _______ _______ fast, you’ll be late for school.2. You can buy the dictionary if you take enough money with you.Take enough money with you, _______ _______ _______ buy the dictionary.3. If there is no air, none of us can live.None of us can live _______ _______.4、unless “除非”Don’t leave the building unless I tell you to. 不要离开大楼,除非我准许。

Unless you have finish ed your homework, I won’t allow you to watch TV. 除非你已完成了作业,否则我是不会让你看电视的。

unless = if notYou’ll be late if you don’t hurry. = You’ll be late unles s you hurry.I can’t catch the train if I don’t get up early. = I can’t catch the train unless I get up early.练习(一)if not与unless相互替换1. He will not go unless I come with her._____________________________________________2. If you don’t finish it, I will be angry._____________________________________________3. Unless I am mistaken, I’ve seen that man before._____________________________________________4. You won’t get a good job, unless you work hard._____________________________________________5. Unless the strike has been called off, there will be no trains tomorrow.__________________________________________________________5、as/so long as 只要You may use my dictionary as/so long as you don’t keep it too long.只要使用时间不太长,你可以用我的词典。

You can take my car as/so long as you drive carefully. 你可以用我的汽车,只要你小心点儿开。

练习(一)用if或unless填空1. ________ he wants to see me, you can tell him to wait.2. ________ it snows tomorrow, we’ll have a day or two off.3. We won’t go to his party ________ he invites us.4. She is sure to pass the examination ________ she is ill.5. I’ll take that computer ________ I have enough money.6. ________ my grandma wears glasses, she can see better.7. I won’t buy that backpack ________ it costs less than $208. ________ I’m tired; I’ll have a rest for tea.9. You won’t get paid for time off ________ you have a doctor’s note.10. You will get a toothache ________ you do clean your teeth regularly.(二)用所给单词的适当形式填空1. If he ________ (get) a low mark in the test, he ________ (study) harder.2. If you ________ (swim) every day this summer, you ________ (be) very healthy.3. If he ________ (not hurry), he ________ (not see) the beginning of the match.4. You can’t go out unless you ________ (finish) your homework.5. Unless I save my money carefully, I ________ (not be) able to buy a football.6. If it ________ (not rain) tomorrow, we ________ (go) to the park.7. If he ________ (return) to the school, I ________ (let) you know.8. He ________ smoke unless he ________ (have) enough money.9. They can remember it better if someone ________ (give) them some advice about it.10. The man ________ (set off) if he ________ (buy) the air ticket.(三)单项填空1. If I _____ his phone number, I will tell you.A. findB. foundC. will findD. have found2. We will go camping if it _____ tomorrow.A. Won’t rainB. didn’t rainC. doesn’t rainD. isn’t raining3. I’m waiting for my friend. If he _____, I _____ swimming alone.A. doesn’t come; will goB. won’t come; will goC. will come; won’t goD. don’t come; will go4. _____ you go to the supermarket at 7 p.m., you can buy a lot of cheap food.A. IfB. UnlessC. WhetherD. When5. I won’t get to the party on time _____ I catch the first train tomorrow morning.A. IfB. UnlessC. WhetherD. When6. —Shall we go on a picnic this weekend? —Good idea! Unless it _____.A. rainsB. doesn’t rainC. rainD. won’t rain7. —Can I change the jacket for another one _____ it doesn’t fit me well? —Of course.A. unlessB. ifC. thatD. though8. Nobody can learn maths well _____ he works hard on it.A ifB unlessC thoughtD however9. If fish _____ away from water, they _____ die.A are taking, won’tB are taken, willC are being taken, willD take, won’t10. Each student can ask teachers for help if he _____ how to work out the problem.A will knowB won’t knowC don’t knowD doesn’t know。

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