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单元语法小专题(Grammar Focus)语法精讲unless，as soon as与so…that…引导的状语从句1．unless是从属连词，意为“如果不；除非”，引导条件状语从句。
如果主句的时态是一般将来时，unless引导的条件状语从句通常用一般现在时代替一般将来时。
另外，unless 引导的条件状语从句表示否定意义，相当于if条件状语从句的否定形式(if…not)。
如：They will go on a picnic tomorrow unless it rains.＝If it doesn't rain，they will go on a picnic tomorrow.如果明天不下雨，他们就去野餐。
Unless you take more care，you'll have an accident.＝If you don't take more care，you'll have an accident.如果你不多加小心的话，你会出事故的。
2．as soon as意为“一……就……”，引导时间状语从句，表示主从句的动作是紧接着发生的。
as soon as 引导的时间状语从句在过去时态中主从句时态一致；若主句用一般将来时，则从句用一般现在时。
如：As soon as we got home，it began to rain.我们一到家，天就开始下雨了。
Tom will call you as soon as he gets there.汤姆一到那里就会给你打电话。
3．so…that…意为“如此……以至于……”，引导结果状语从句。
常见于以下四种结构：(1)so＋形容词/副词＋that从句。
如：Kate was so busy that she forgot to have breakfast.凯特忙得忘记吃早饭了。
He ran so fast that we couldn't follow him.他跑得如此快，我们跟不上了。
初三英语上册第六单元知识点讲解Grammar TV programsGrammar重点短语1 be in danger处于危险状态e.g. The country was in danger. 那个国家处于危险之中。
2 have a chance to do sth.有机会去做某事e.g. I hope that I'll have a chance to go skating there.我期望以后有机会去那儿溜冰。
语法纵横状语从句( III)一、if引导的条件状语从句1.定义及用法条件状语从句在复合句中表示主句动作发生的条件。
条件状语从句最常用的引导词是if,意为“假如，假如”,表示在某种条件下某事专门可能发生。
e.g. If you ask him, he will help you.假如你请他帮忙,他会帮你的。
The cat will scratch you if you pull her tail. 假如你拉猫的尾巴,它就会抓你。
注意:if引导的条件状语从句能够位于主句之前，也可位于主句之后。
假如从句在前，从句与主句之间要用逗号隔开。
2. if引导的条件状语从句的时态(1)若if引导的条件状语从句表示今后可能发生的情况,主句常用一样今后时,从句用一样现在时;若if引导的条件状语从句是表示与现在事实相反的情形，主句用一样过去时,从句也要用表示过去的相应时态。
e.g. If you leave now ,you will be regretful.假如你现在离开,你会后悔的。
If I didn't apologize ,I would feel guilty.假如我不道歉，我会感到内疚。
(事实:道歉了)注意:在条件状语从句中，主句只能用will或shall表示一样今后时，而不能用be going to。
(2)在含有if引导的条件状语从句的复合句中,主句也可含有情态动词或者是一个祈使句,从句用一样现在时。
if 条件句if条件句是一种高级的语法结构，它用来表达一个假设或者一个可能的情况。
if条件句可以用在日常交流中，也可以用在实际生活中。
下面我们来详细的讲解if条件句。
一、if条件句的基本形式if条件句的基本形式是：if + 主语 + 谓语，如：如果条件成立，则执行相应的结果。
if条件句可以分为三种类型：1、真实条件句真实条件句是指一个可能的情况，它可以发生，也有可能不发生。
真实条件句的形式是if + 现在时态，主将未来时，表示未来的可能情况，例如：If he comes, I will tell him the truth.（如果他来了，我会告诉他实话。
）2、虚拟条件句虚拟条件句是指一个虚假或虚构的情况，它不可能实现或已经过去了。
虚拟条件句的形式是if + 过去时态，过去完成时态或would + 动词原形，表示与现在相反、与过去相反或者未来不可能的情况，例如：如果我知道了，现在会有不同的结果。
非真实条件句和虚拟条件句很相似，但是它所表达的情况是存在的，只是比较困难或者需要经过一些条件才能实现。
非真实条件句的形式是如果+过去式，主语+would/could/might+动原。
例如：If I were you, I would study hard.（如果我是你，我会努力学习。
）如果我成为你的话，然后可能做的事情。
if条件句的基本引导词是if，但是我们还可以使用其他的引导词，例如：1、UnlessUnless是“除非”、“如果不”的意思，它是对if的否定形式。
例如：如果你不和我一起去，我不会执行此动作。
2、Provided thatProvided that是“只要”，“在条件下”之意，例如：Provided that the weather is fine, we will have a picnic tomorrow.（只要天气好，我们明天就去野餐。
）在此条件下，我们会执行此活动。
四、if条件句的注意事项1、if的位置主语和谓语之间要有if，如果把if放在其他位置，意思会变得模糊。
Unit6 TV programmes Grammar教案（一）Grammar教案（二）I. Teaching aims and learning objectivesBy the end of the lesson, students should be able to:1.learn to use if-clause;2.learn to use unless-clause.II. Teaching contents1.New words and phrases:be in danger live in the wildlive as a family realize your dreamweather report have a chance to do sth.Take your own food with you have little interest in sth. 2.New structures:If you enjoy solving mysteries, you might like this film.Unless you try your best, you will not realize your dream.You will have a chance to see how a TV programme is recordedunless you have little interest in it.III. Focus of the lesson and predicted area of difficulty1. To use if-clause to talk about the result of a possible action.2. To use unless to say that something can only happen or be true in a particular situation.IV. Teaching proceduresGrammar AStep 1 Sing a song -I f You Are HappyIf you’re happy and you know it , clap Your handsIf you’re happy and you know it , clap your handsIf you’re happy and you know itNever be afraid to show it...【设计意图：通过英文歌曲调节气氛，同时迅速进入本课重点if-clause。
班级姓名学号分数Unit 6 TV programmesIf,unless引导的条件状语从句（时间：60分钟，满分：100分）一、单项选择(本大题共50小题，每小题2分，共100分)1．（2022·广西河池·中考真题）Our classroom won’t be clean ________ we clean it every day.A．after B．while C．unless D．because2．（2022·贵州毕节·中考真题）________ the weather improves, we’ll have to cancel the outdoor picnic. A．Unless B．If C．Because D．When3．（2022·江苏泰州·中考真题）—It is impossible to finish the difficult task in such a short time on my own ________ both of us work together.—No problem. Let’s start!A．if B．but C．because D．unless4．（2021·辽宁沈阳·中考真题）________ you want to watch television, I will turn it off now.A．Since B．As C．Until D．Unless5．（2022·四川凉山·模拟预测）There _________ a basketball game next Monday. If it _________, we’ll have to put it off.A．is going to have; will rain B．is going to have; rainsC．is going to be; will rain D．is going to be; rains6．（2022·广西·贺州市平桂区教育科学研究所二模）You need to practice speaking you want to improve your spoken English.A．if B．although C．unless D．until7．（2022·四川·双流中学模拟预测）—The students of Grade 9 in Chengdu have to take part in the P.E. test.—Yes. ________ you want to pass it and be stronger, practice more.A．If B．But C．Or8．（2022·山西晋中·模拟预测）Reading means everything for me. ________ I have to live my life without books, the days would all be empty.A．Until B．Though C．If9．（2022·黑龙江哈尔滨·三模）—I’m going to the party on foot.—________ you do, you’ll be late. The party will start soon.A．Until B．Unless C．If10．（2022·黑龙江哈尔滨·二模）—Every year’s school concert is amazing! ________ it is fine next Friday, our school will hold it on the playground.—Wonderful! All of us will enjoy ourselves.A．Although B．If C．Until11．（2020·广西·都安瑶族自治县教学研究室一模）If the singer ________ to Hechi ________ September20th, please call me.A．will get; on B．gets; on C．gets; in D．get; in12．（2022·山东济南·一模）—What’s Cindy’s weekend plan?—If it doesn’t rain, she ________ a trip to the Great Wall with her cousin.A．takes B．took C．will take D．is taken13．（2022·上海浦东新·二模）Hurry up! ________ we miss the last bus, we’ll have to get home on foot. A．Because B．Although C．Since D．If14．（2022·天津河东·二模）Ask the policeman for help ________ you don’t know how to get to the railway station.A．if B．and C．because D．though15．（2022·天津河西·一模）—Are we going camping tomorrow?—If it ________, we will go camping.A．rains B．will rain C．doesn’t rain D．won’t rain16．（2022·北京大兴·二模）If it is sunny tomorrow, my parents ________ me to the park.A．take B．took C．will take D．have taken17．（2022·山东·平阴县教育教学研究中心二模）If you _________ nervous before exams, you can take a deep breath and calm yourself down.A．is getting B．get C．gets D．got18．（2022·福建·模拟预测）—The doctor says we’re in need of fresh air.—He’s right. I always keep the windows open in my house it’s really cold.A．because B．unless C．when19．（2022·安徽芜湖·二模）Your dream will come true _________ you give it up half way. Hang in there! A．if B．until C．unless D．because20．（2022·福建厦门·模拟预测）You won’t remember things well ________ you get enough sleep every night. A．if B．though C．unless21．（2022·重庆市育才中学三模）You are not allowed to enter many public places ________ you have a health code （健康码）.A．if B．so C．unless D．because22．（2022·重庆一中一模）_______ you find a balance between your schoolwork and hobbies, you can’t do anything well.A．If B．Because C．Unless D．Until23．（2022·四川·双流中学模拟预测）You can’t get on the public transportation like buses, subways ________ you wear a mask.A．as long as B．although C．unless24．（2022·四川泸州·一模）The rivers will become dirtier and dirtier _____ we do something helpful for them. A．if B．until C．unless D．because25．（2022·福建厦门·模拟预测）Children are not allowed to use the swimming pool __ they are with their parents.A．until B．unless C．though26．（2022·山东济南·一模）—Do you always sleep with the window open?—Yes, _________ it’s really cold.A．unless B．since C．because D．if27．（2022·江苏无锡·模拟预测）Many scientists believe human beings will face more serious problems________ they take action to change the way they live.A．but B．though C．unless D．until28．（2022·江苏常州·一模）I won’t stop loving English ________ the sun rises in the west.A．if B．unless C．because D．although29．（2022·山东青岛·一模）Nothing will happen ________ you take action, no matter how much thinking and planning you do.A．unless B．if C．because D．as30．（2022·江西·模拟预测）—Kate, you won’t go with us to Nancy’s party, will you?—No, _________ I am invited.A．if B．so C．unless D．because31．（2022·江苏无锡·一模）— Wait! You aren’t supposed to enter the school _________ you have your temperature taken.— Sorry! I am too rushed.A．although B．unless C．because D．whenever32．（2022·江苏徐州·模拟预测）You can’t make progress in English learning ________ you work harder. A．if B．unless C．so D．until33．（2022·黑龙江哈尔滨·一模）—The secret is between you and me.—I promise. I won’t tell others ________ you say I can.A．unless B．if C．when34．（2022·江西·寻乌县教育局教学研究室一模）The air pollution will become worse and worse ________ we take action to solve it.A．since B．if C．until D．unless35．（2022·安徽淮北·二模）My little son won’t go to sleep ________ I tell him a story every night.A．when B．if C．unless D．because36．（2022·广西河池·一模）You will be late for school ________ you hurry up.A．if B．when C．unless D．because37．（2022·浙江浙江·一模）My grandpa usually forgets things ________ he writes them down on his notebook. A．if B．since C．unless D．because38．（2022·福建·龙岩二中一模）—Is your WeChat account safe?—Yes, nobody can use it ________ they have the password.A．unless B．since C．if39．（2022·黑龙江双鸭山·一模）You can’t learn spoken English well ________ you practice speaking again and again.A．if B．unless C．while40．（2022·辽宁葫芦岛·一模）This is between you and me. I promise I won’t tell anyone ________ you say I can.A．since B．but C．unless D．as41．（2022·安徽淮南·模拟预测）—Paul is badly hurt on the playground. Let’s help him up.—Don’t move him ________ you know some first aid (急救) knowledge.A．until B．till C．unless D．though42．（2021·四川省成都市石室联合中学三模）—Would you like to tell me something new about rubbish sorting in Chengdu?—Yes. People will be punished ________ they throw the rubbish into correct bins.A．while B．unless C．if43．（2022·湖北武汉·模拟预测）We can easily become unhappy ________ we solve our problems in our daily life.A．unless B．if C．until D．after44．（2022·山东·平阴县教育教学研究中心二模）You can’t cook ________ you promise not to make a mess inthe kitchen.A．after B．unless C．if D．since45．（2022·广西·二模）You need to practise singing every day ________ you want to become a popular singer. A．unless B．if C．although D．until46．（2022·江苏盐城·三模）If all of the ancient books ________, their value will go beyond our imagination. A．will protect B．have protected C．are protected D．were protected 47．（2022·北京密云·二模）If I ________ time tomorrow, I will clean the room.A．have B．will have C．had D．am having48．（2022·河北保定·二模）I’m waiting for my friend. ________, I’ll go swimming alone.A．If he comes B．If he will come C．If he doesn’t come D．If he didn’t come 49．（2022·辽宁大连·一模）I will help mum with the housework ________ I am free.A．although B．before C．if D．until50．（2022·江苏·滨海县教师发展中心二模）You will feel happy at school ________ you get on well with your classmates.A．though B．whether C．so D．if参考答案：1．C【解析】句意：如果我们不每天打扫，我们的教室就不会干净。
初三秋季班英语讲义第六讲Module 6-U3 & if引导的条件状语从句★Aims：1．巩固复习“禁止做某事”的结构；2．感知理解新语法：if引导的条件状语从句。
★Procedures:Unit 3 language in use．祈使句和if从句英语祈使句用于表达命令、请求、劝告、警告禁止等的句子叫作祈使句,肯定结构(1). Do型Please have a seat here.请这边坐。
(2).Be型Be a good boy!要做一个好孩子！(3). Let型Let me help you.让我来帮你。
否定结构构成。
(1). Do型和Be型的否定式都是在句首加don’ｔ不要忘记我！__________________________ 上学不要迟到！________________________________(2).Let型的否定式有两种：Don’t let sb. do sth. 和Let sb. not do sth.别让他走。
_________________________ / _______________________________________(3). 有些可用no 幵头，用来表示禁止性的祈使句。
禁止吸烟. _________________________ 禁止钓鱼__________________________________【语法】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。
在学习条件状语从句时，同学们要注意以下几点：一．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____________ (get) there in time. 如果他用跑的，他就会及时赶到那儿。
Part Two Grammar一、条件状语从句1. if条件句(1 )如果if条件句表示科学事实、日常行为等，那么主句用一般现在时，从句亦用一般现在时，此时if可用when来替换。
e. g. Salt melts if it is put into water. = Salt melts when it is put into water.(把盐放入水中它就会化。
）(2)如果if条件句表示假设的情况可能发生或表示允许、要求、建议等，从句用一般现在时，主句谓语动词常由“ will/shall/may/might/can/must/should +动词原形” 构成。
e. g. If time permits, we'll go fishing together.(如果时间允许的话，我们一起去钓鱼。
）【注意】一般情况下，if从句中的谓语动词用一般现在时表示将来，主句谓语动词则用将来时;但有时if从句中的谓语动词也可用现在进行时或现在完成时。
e. g. If you haven’t finished your homework by 8 : 00，you can’t go out with Tom.(如果到八点钟你还没有做完作业，你就不能和汤姆出去。
）2. as long as，unless引导的条件句(1)as long as意为“只要”，后接句子0e. g. I'll accept any job as long as I don't have to get up early.(只要不必早起，任何工作我都可以接受。
）(2)unless意为“除非”，引导条件状语从句含有否定意义，相当于if条件状语从句的否定形式，即unless = if....... not。
e. g. Unless you take more care, you’ll have an accident.=If you don’t take more care, you’ll have an accident.(如果不多加小心的话，你会出事故的。
