if 引导的条件状语从句的时态问题
索罗学院
if 引导的条件状语从句的时态问题?
疑点：if 引导的条件状语从句的时态问题?
解析：在if 引导的条件状语从句中，主句应用将来时态，状语从句要用一般现在时态。例句：You'll have a great time if you go to the party.如果你去这个聚会，你会过的很快乐。(句中，you go to the party是if 引导的条件状语从句，是从句;You'll have a great time是主句。主句You'll have a great time用的是将来时态，从句you go to the party用的是一般现在时态) 例句：If you go to the party, you'll have a great time. 如果你去这个聚会，你会过的很快乐。(这个例句是由上个例句变换得来的。句中，you go to the party是if 引导的条件状语从句，是从句;you'll have a great time是主句。主句you'll have a great time用的是将来时态，从句you go to the party用的是一般现在时态)
注：学习条件状语从句的时态问题重点是区分从句和主句，从句可能在前面，也可能在后面。总结起来说，if 后面的半个句子是从句，其他的部分是主句。
本文由索罗学院整理索罗学院是一个免费的中小学生学习网，上面有大量免费学习视频，欢迎大家前往观看！
主从句的时态问题
主从句的时态问题
从句和主句中谓语动词的时态 在复合句中，主句和从句的谓语动词时态一般遵循以下的规律： 一① 在以下三种主语从句中，主语从句的谓语动词要用“should+动词 原形”， should可省略。 (1)It is+形容词+that…句型。常见的形容词有important, necessary, natural, funny, strange, surprising, astonishing(令人惊讶的)等。 (2) It is +名词+that…句型。常见的名词有pity, shame, advice, suggestion, proposal(提议，建议)， requirement, request, desire, order 等。 (3) It is+动词的过去分词+ that…句型。常见的动词有advise, order, propose, request, suggest, demand, require等。 ②在insist(坚持)， urge (催促)， order(命令)， command(命令)，suggest(建议)，advise(建议)，recommend(建议，推荐)， request(请求，要 求)， demand(要求)，require(要求，需要)等动词后的宾语从句中，谓语动词用“should+动词原形”， should可省略。 ③ 在含有advice, order, demand, proposal(提议)， requirement, suggestion等名词的表语从句、同位语从句中，谓语动词用“should+动词原形”，should可省略。 ④在一些表示惊讶、意志等感情色彩的名词性从句中，谓语动词用“should+动词原形”或“should +have done”，译为“竟然，居然”。例如： I am surprised /shocked that you should speak in such a way。 I find it astonishing that he should be so rude to his mum。 It is strange /surprising that she should not have been invited。 I am glad that your story should have won the first prize。
英语状语从句试题经典及解析
英语状语从句试题经典及解析 一、初中英语状语从句 1．If you study hard, you ________ into a good senior high school. A．got B．will get C．get 【答案】B 【解析】 【详解】 考查条件状语从句时态的用法。 句意：如果你努力学习，你_______进入一个好点的高中。 A. got 表示一般过去时； B. will get 是一般将来时； C. get 是一般现在时。连词if引导的条件状语从句中，主句是一般将来时，条件状语从句用一般现在时表示将来的动作。由句意可知，主句是将来发生的动作，用一般将来时，故选B。 2．— When did you go to bed last night? — ____________ I finished my homework. A．Until B．Not until C．When D．While 【答案】B 【解析】 not …until 表示直到…才，与短暂性动词连用，故选B 3．—How do you like your new school, Kate? —It is very clean and beautiful ____it is a bit small. A．if B．since C．unless D．although 【答案】D 【解析】 试题分析：句意：--凯特，你觉得你的新学校怎么样？--尽管它有点小，但是它非常的干净，美丽。if,如果，表示条件关系；since,自从……，表示时间关系；unless,如果不，引导条件状语从句；although，尽管，虽然，表示让步关系，结合句意，关系D。 考点：考查连词的用法。 4．一When did you leave your office yesterday? 一 I finished the project. A．Until B．While C．When D．Not until 【答案】D 【解析】 句意：昨天你什么时候离开你的办公室的？——直到我完成那个任务。本题考查连词。A. Until 直到···时候才结束，要与延续性动词连用；B. While 当···时候；C. When 当···时候；D. Not until直到···时候才开始，与非延续性动词连用；句子中finished（完成）是非延续性动词，故选D
if引导的条件状语从句讲解和练习(答案)
t 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 ’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.or B.but C.and D.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。答案：C 黑色陷阱：本题的陷阱是句型，本句型区别于“祈使句＋or”，这个句型的含义是“……，不然的话/否则……”。 绿色通道：祈使句后面既可以加 and ，也可以加 or ，所以要全面分析句意，再作决定。 小试牛刀：用 if 连接下列句子 1、Go to bed early and you will have a good rest. 2、Hurry up, or you ’ll miss the bus. 三、if 从句与主句具有以下特点： 1．If 从句中用一般现在时，表示未来的一种条件，从句中可以加时间状语。 e.g.If yo u can’t come tomorrow, we can hold the party a little later.明天你如果不能来，我们可迟一点举行宴会。
名词性从句、定语从句、状语从句时态问题
一、名词性从句 （一）在宾语从句中主句和从句之间的时态的一致关系,通常由主句谓语的时态决定从句谓语的时态. ⒈若主句谓语动词是现在时或将来时,如：一般现在时,现在完成时,一般将来时,将来完成时等,从句可以根据需要使用任何时态. 如:He says that he is doing well in his lessons.you will miss a lot of lessons.the boy is lazy.XiaoWang was late for school yesterday.Jim has been back for two days. ⒉若主句谓语动词是过去时态(一般过去时,过去进行时,过去完成时,过去将来时,过去将来完成时),从句谓语动词也必须是过去时态. 如:He said he enjoyed himself last Sunday.he hadn’t bought any present.the would come back the next day.he was doing his homework· ⒊当从句表示客观事物或真理,或人们已经公认的道理时,其时态不受主句谓语动词的时态的影响.即使主句谓语动词使用了过去时的某种时态,从句的时态仍然是现在的某种时态. 1)The teacher said the earth goes around the sun。 2)He said the sun rises in the east. 3)His father said he gets up at six o'clock every morning. 4)He told me the light travels faster than the sound. ⒋当从句表示并未出现或尚未实现的愿望时,必须用过去时态. ⒌（可包含在1/2中）有些形容词后面可跟有从句,这种从句一般可看作宾语从句,其谓语也应与主句谓语的时态保持一致.可跟这种宾语从句的形容词有：afraid,glad,sure,confident,sorry, certain,conscious,aware等.一致的原则与宾语从句相同. 例如： I'm confident that I'll pass the exam.我有信心通过考试. He was lucky that he wasn't killed.他很幸运没有被杀死. （二）在主语从句,表语从句和同位语从句中,主句和从句之间的时态一致关系所遵守的法则和宾语从句相同. 例如： It appears that some little trouble was caused by a woman,whose name has not been ascertained.看来这件小小的麻烦是由一个至今尚不清楚其姓名的女人所引起的. It was known long ago that Professor Einstein played a key role in the development of the theory of relativity.人们早已知道,爱因斯坦教授对相对论的发展起了关键作用. It was proved centuries ago that the speed of light is186,000miles a second.几世纪前就证实了光的速度为每秒186,000英里. The fact[that man would soon be able to visit the moon]built up new scientific interest in earth's nearest neighbor.人类不久可以游览月球的事实,引起了对地球最近邻居的新的科学兴趣.二、定语从句与主句的时态一致关系 定语从句的时态不受影响意思就是定语从句的时态是根据事物真实发生的情景决定不受主句影响,因为定语从句的作用只是在修饰句子中的名词之类的,和句子本身的时态没有关系.比如： He is a man whose telephone was stolen.他是那个手机被偷的那个人. 主句一般现在时,从句过去时,因为手机真实被偷是在过去发生. I went to the apartment in which Mary lives in.我去过Mary现在住的房子. 主句过去式,从句一般现在时,因为我去过的那个房子,Mary确实现在在住. ⒈若定语从句的谓语表示的动作和主句谓语表示的动作同时发生,则要求使用同样的时
【英语】 状语从句基础测试题
【英语】状语从句基础测试题 一、初中英语状语从句 1．She looked behind from time to time ________ she went in the dark. A．when B．as C．while D．before 【答案】B 【解析】 【详解】 句意：她在黑暗中走着，不时回头看看。考查连词辨析。when，while都可表示“…… 时候”；when引导的从句，谓语动词既可以是延续性动词，也可以是非延续性动词；while引导的从句，谓语动词必须是延续性动词，而不能是非延续性动词；as表示“在……期间”“随着”；before“在……之前”，常与过去时，一般现在时等连用。根据句意语境，可知她一边走一边回头看，as切合句意，故选B。 2．Tony has had to cook by himself ________ his mother went on business to Guangzhou. A．since B．after C．during D．when 【答案】A 【解析】 【详解】 句意：自从妈妈去广州出差以来，托尼不得不自己做饭。A. since从……以来；B. after在……之后；C. during 在……期间；D. when当……时候。since后跟时间状语从句时，表示的是到目前为止的时间段，从句时态为一般过去时，而主句的时态为现在完成时，故正确答案为A。 3．Our eyesight will become poorer and poorer we keep playing with phones. A．though B．unless C．if 【答案】C 【解析】 【详解】 句意：如果我们继续玩手机，我们的视力会越来越差。 A. though尽管，虽然； B. unless除非； C. if如果。这里是if引导的条件状语从句，遵循主句用一般将来时，从句用一般现在时态，根据题意，故选C。 4．WeChat Pay makes our lives confident. ______ we want to pay for something, we just need to scan a QR code（扫描二维码）.
if引导的条件状语从句
语法10单元语法再现梁老师组稿2017-12-31 一、观察下面的句子 If you go to the party, you will have a great time. If you do , you will be late. If you do,you will be sorry. If they have it today, half the class won’t come. If we ask people to bring food, they will just bring potato chips and chocolate. 以上几个句子中“if”有相同的含义“如果”，引导条件状语从句逗号后面的句子是主句。整个连起来的大句子叫主从复合句。 注意主句和从句的时态有什么特点。 总结：If引导的条件状语从句用一般现在时，主句用一般将来时。 简称“主将从现” 练习：（1）If you ______(come)here, you ___________(be) happy. (2) If it _________(rain) tomorrow, we__________(not, go) to the park. (3) If he _________(come) here, I ___________(call) you. (4) If it ___________(not rain), we _________(have) a picnic(野餐). (5) If we do that, more people _________(want) to play the games. 页脚内容1
If引导条件状语从句的详细用法解答
If引导条件状语从句的详细用法解答 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/can If 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。 3．if从句用一般现在时，主句用must/should 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。 4．if从句用一般现在时，主句用一般现在时 If you heat ice it turns to water. (也可用will turn)如果把冰加热，它就会化成水。5．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。 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. 如果你吃完了，我就叫服务生来算账 注意： 学习" if " 引导的条件状语从句的用法,现在总结一下: 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。 条件句表可能，主句多用将来时； 条件句表事实，主句常用现在时。
状语从句。主谓一致。几种时态转换
中考英语语法：状语从句时态类型 1、时态说明 1）在时间和条件状语从句中，通常要用一般现在时表示将来意义，不能直接使用将来时态： I won’t go if it rains tomorrow. 要是明天下雨，我就不去。(不能用will rain) 2）有时也可见到if you will 这样的说法，但那不是将来时态，而是表示意愿或委婉的请求(此时的will是情态动词)： If you will wait a moment, I’ll fetch the money. 请等一下，我就去拿钱。 2、常见类型 状语从句即指在主从复合句中用作状语的从句。状语从句根据其用途可分为时间状语从句、地点状语从句、原因状语从句、结果状语从句、目的状语从句、条件状语从句、方式状语从句等： He was angry because I was late. 他很生气因为我迟到了。(原因状语从句) He was so angry that he couldn’t speak. 他气得话都说不出来。(结果状语从句) Although he is poor, he’s happy. 虽然穷，但他仍很快乐。(让步状语从句) Put it where you can reach it. 把它放在你可以拿到的地方。(地点状语从句) Speak clearly so that they may understand you. 讲清楚些，以便他们能理解你。(目的状从) 中考英语语法复习：主谓语法一致的原则 谓语受主语支配，须和主语在人称和数上保持一致，这叫做主谓一致。主谓一致一般遵循三条原则：语法一致原则，意义一致原则和就近一致原则。 1. 语法一致的原则 （1）以单数名词或代词，动词不定式短语作主语时，谓语动词要用单数;主语为复数时，谓语用复数，例如： He goes to school early every morning. The children are playing outside. To work hard is necessary for a student. （2）由and或both……and连接的并列成分作主语时，谓语动词用复数。例如：Both he and I are right. Mr Black and Mrs Black have a son called Tom. 但并列主语如果指的是同一人，同一事物或同一概念，谓语动词用单数。例如： His teacher and friend is a beautiful girl. The poet and writer has come. （3）由and连接的并列单数主语之前如果分别由each, every修饰时，其谓语动词要用单数形式。例如： In our country every boy and every girl has the right to receive education. Each man and each woman is asked to help. （4）主语是单数时，尽管后面跟有but ,except, besides, with 等介词短语，谓语动词仍用单数。例如： The teacher with his students is going to visit the museum. Nobody but two boys was late for class. Bread and butter is a daily food in the west. （5）一些只有复数形式的名词，如people, police, cattle, clothes等作主语时，谓语动词要用复数。例如： A lot of people are dancing outside.
初中英语——If引导的条件状语从句
初中英语――if引导的条件状语从句 在主从复合句中修饰主句中的动词、形容词、副词等的从句叫做状语从句，状语从句一般可分为时间状语从句、地点状语从句、原因状语从句、目的状语从句、结果状语从句、条件状语从句、让步状语从句、比较状语从句和方式状语从句九种。 在句子中做条件状语的从句称为条件状语从句。可置于句首、句尾，有时还可置于主语和谓语之间。引导条件状语从句的连接词有：if ,unless,as/so long as等 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 we pay much attention to the earth, we'll have a better world. 如果我们多关爱地球，就会拥有一个更美好的世界 If it rains tomorrow, what shall we do? 如果明天下雨，我们怎么办？ 注意：if还可以引导虚拟条件句，表示不可实现的条件，从句中多用一般过去时或过去完成时。 What would happen if there were no water ? 如果没有水会怎样？ 2.unless引导的条件状语从句 unless的意思是如果不，除非。可与if...not互换。 You will fail in English unless you work hard. 你英语考试会不及格的，除非你更加努力。 3.as /so long as引导的条件状语从句 as /so long as意思是“只要” So long as you're happy,i will be happy. 只要你高兴，我就高兴。 4.once引导的条件状语从句 once引导的条件状语从句，意为“一旦...，就”，从句可置于主句前或后 Once you begin,never stop. 一旦开始，就绝不要停止 Maths is easy to learn once you understand the rules. 一旦你理解了规则，数学就不难学了。 提示：在条件状语从句中，用一般现在时代替一般将来时，用一般过去时代替过去将来时。 If the weather is bad next week, we'll put off the climbing. 如果下周天气不好，我们将推迟爬山。 Father told me if i worked hard he would buy me a gift. 爸爸告诉我，如果我努力学习，他会给我买一份礼物。
时间状语从句和条件状语从句的时态一致表解
时间状语从句和条件状语从句的时态一致表解 时间状语从句和条件状语从句是中考考查点之一 ，也是高考考查点之一。因 此我们必须掌握好它。 一、表解： picnic if it doesn't rain tomorrow. 2.1 will give him the book as soon as he comes back. 3. Please sta nd up whe n the teacher comes in. 4.She couldritplay the guitar whe n she was five years old. 5.1 didn ' t go to bed until I finished my homesork last night. 三、考例： A.考查连接词 1. It ' s quite com mon in Brita in to say “ Thank you 二 to phepdevees off the bus. （ 09 河南省） B. since C. un til D. whe n 2. — Where was your brother at this time last ni ght? —He was writing an e-mail ___________ I was watching TV at home. （ 09 黄冈市） A. as soon as B. after C. un til D. while 3. --- What is our head teacher like, do you know? ---Oh, he is very kind ______ he looks very serious. A. because B. though C. if D. whe n 4. Bill won 'make any progres ______ he studies hatder than before.（08上海市） A. if B. whe n C. because D.unl ess 5. He climbed up the tree _____ he saw the bear.（08天 津市） A. while B. if C. un til D. as soon as B. 考查时态一致 1. — May we leave the classroom now? —No, you __________ . You ____________ t o leave until the bell rings. （09 黄冈市） A. mustn ' t; are allowed B. don ' t have to; are supposed C. needn ' t; aren 't allowedcan ' t; aren ' t supposed 2. _________________________ My grandfather us stories when I was young （09 辽宁 锦州市） A . was used to tell B . is used to telling 、举例： 1.1 'll go out for a A. after
if条件状语从句专练
If条件状语从句专练 1. If I ___(go) to the party, they ___(be) upset. 2. If I ___(take) a taxi, it ___(be) too expensive. 3. If she ___(finish) work early, she can go home. 4. If the weather is fine, we ____(go) for a walk. 5. If I ___(have) time tonight, I will finish the book. 6. If it ___(rain) next Sunday, we won`t be able to plant trees. 7. If she ___(arrive) home, she will phone
me. 8. Unless you speak to him first, she ___(not speak) to you. 9. If he ___ (call) to you, tell him I will ring back. 10. I don`t know if it ___(rain) tomorrow. 11. Have a rest if you ___(be) tired. 12. Don`t come unless I ___(call) you. 13. I don`t know if he ___(come) tomorrow, but if he __(come), I`ll let you know. 宾语从句与状语从句混合 1. ——Helen, do you know if Martin
状语从句的时态特点
1. “主将从现”原则 即若主句为一般将来时，时间和条件状语从句通常要用一般现在时表示将来，而不能直接使用将来时态。如： I’ll give her the telex when she comes. 她来时把电传交给她。 I’ll return the book as soon as I have read it. 这书一看完我就送还。 He’ll have four years at university after he leaves school. 他中学毕业后要上四年大学。 2. since与完成时 since 引导时间状语从句时，其主句通常要用现在完成时，有时也用现在完成进行时。如： She has had another baby since I saw her last. 从上次我见到她以来，她又生了一个孩子。 He has grown an inch since I saw him. 我上次见到他以后他已长高了一英寸。 注：当主句为“It + be + 一段时间”时，则通常用一般现在时代替现在完成时。如：It’s more than three years now since I sa w her last. 我们已有三年多没见面了。 3. 特定句式的时态 由no sooner. . . than, hardly [scarcely]…when引出的时间状语从句，其主句通常用过去完成时，从句通常用一般过去时。如： Hardly had he arrived when she started complaining. 他刚到她就抱怨起来。 No sooner had he gone to sleep than the telephone rang. 他刚睡着电话铃就响了。 We had no sooner set out than a thunderstorm broke. 我们刚出发就下起一阵雷暴。 No sooner had she agreed to marry him than she started to have terrible dou bts. 她刚同意嫁给他她就开始产生可怕的疑虑。
If 引导的条件状语从句
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
if引导的条件状语从句-与专题练习
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。如： If you ask me ,I will answer you． If it rains tomorrow, I will stay at home. I will stay at home if it rains tomorrow. 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 in university，I would …． If I had enough money ,I would buy a car. 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． 2.if从句用一般现在时，主句用may/might/can/must If the fog gets thicker the plane may/might be diverted. 3.if从句用一般现在时，主句用一般现在时 If you heat ice it turns to water. (也可用will turn) 4. 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. 5.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.
状语从句的时态特点
涉及状语从句的几种特定时态 1. “主将从现”原则 即若主句为一般将来时，时间和条件状语从句通常要用一般现在时表示将来，而不能直接使用将来时态。如： I’ll give her the telex when she comes. 她来时把电传交给她。 I’ll return the book as soon as I have read it. 这书一看完我就送还。 He’ll have four years at university after he leaves school. 他中学毕业后要上四年大学。 2. since与完成时 since 引导时间状语从句时，其主句通常要用现在完成时，有时也用现在完成进行时。如： She has had another baby since I saw her last. 从上次我见到她以来，她又生了一个孩子。 He has grown an inch since I saw him. 我上次见到他以后他已长高了一英寸。 注：当主句为“It + be + 一段时间”时，则通常用一般现在时代替现在完成时。如：It’s more than three years now since I saw her last. 我们已有三年多没见面了。 3. 特定句式的时态 由no sooner. . . than, hardly [scarcely]…when引出的时间状语从句，其主句通常用过去完成时，从句通常用一般过去时。如： Hardly had he arrived when she started complaining. 他刚到她就抱怨起来。 No sooner had he gone to sleep than the telephone rang. 他刚睡着电话铃就响了。 We had no sooner set out than a thunderstorm broke. 我们刚出发就下起一阵雷暴。 No sooner had she agreed to marry him than she started to have terrible doubts. 她 刚同意嫁给他她就开始产生可怕的疑虑。
总结好的：if引导的条件状语从句
if引导的条件状语从句 if 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 .
状语从句专项练习综合
状语从句专项练习综合 一、初中英语状语从句 1．How can we improve our environment a lot each of us does something useful for it? A．while B．until C．after D．unless 【答案】D 【解析】 【详解】 句意：除非我们每个人都做一些有益的事情，否则我们如何才能大大改善我们的环境呢?考查连词辨析。while当……的时候，表时间；until直到，表时间；after在……之后，表时间；unless除非，表条件。本句是条件状语从句，根据句意结构和语境，可知选D。 2．I will go to the English club tomorrow I am too busy. A．since B．if C．unless D．until 【答案】C 【解析】 【详解】 句意：明天我将会去英语俱乐部，除非我太忙。since自从；if如果；unless除非，如果不；until直到…时候。根据句意可知，这里表示的意思是“如果我不忙，我会…”，故应选C。 3．Mrs. White walks a dog in the park nearby every morning it’s rainy or windy. A．since B．because C．unless D．until 【答案】C 【解析】 试题分析：句意：如果不刮风下雨，怀特夫人就会带狗到附近的公园散步。A.. since自从；B.. because因为；C.. unless如果不；D. .until直到……才。结合句意，故选C 考点：考查连词的用法。 4．—I hear Music and Art will enter the Entrance Examination for the high school. —Yes. but don’t worry. Nothing will be difficult if more attention _____ to them. A．will pay B．will be paid C．is paid D．pays 【答案】C 【解析】句意：——我听说音乐和艺术将进入高中入学考试。——是的。但别担心。如果 对他们给予更多的关注，就不会有困难。考查被动语态。本句是if引导的条件状语从句，需用一般现在时态代替一般将来时态；从句主语more attention是单数第三人称，又是动词pay的受动者，需用被动语态，即is+paid结构；根据句意语境，可知选C。 5．—Dear, I have an important meeting tomorrow. —It doesn’t matter. If you _______ go to the movie tomorrow, I _______ my friend to go with me.