4if引导的条件状语从句
if 引导的条件状语从句
一般现在时。 If you drive too fast, you may have an accident. You must stop if the traffic is red. If you finish the homework， you can go home． 如果你作业做完了就可以回家了。 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。
if引导的条件状语从句
If条件句：条件句用于陈述语气，表示将来的可能性，能力， 允
诺，命令，要求，请求，建议时，假设的情况可能发生，其中 if 是“假如， 如果”的意思。主句一般将来时 ，从句用一般现在时。
运用“主将从现”的原则。
构 成
条件从句
主句
时 态
If＋一般现在时 主语＋shall/will+动词原形
if引导的条件状语从句
主从句的时态？
If I get up late, I will be late for school. If I don’t finish my homework, I won’t go to bed. If you join the band(乐队), you will be famous.
• 除非天气不好，我每天早晨都要去散步。
• 3. I won‘t loan you unless you are in extreme need of money．
• 若不是你急需用钱，我不会借钱给你的。
if引导的条件状语从句
Summary（小结）
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， 主将从现不一般； 条件句表事实， 主句常用现在时。
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。
if 条件状语从句
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：一，第一类：1）表示普遍真理和客观事实：If you heat ice ,it melts .If you pour oil on water,it floats.不受时间限制的自然法则的条件句，主句，从句都是一般现在时。
2）表示习惯性的动作If I make a promise , I take it .If it rains ,I go to work by car.表示一个现在习惯性的动作，主句和从句的谓语动词都是一般现在时。
3）表示过去的习惯性，经常的动作If it rained,I went to work by car.If I was hungry, I usually had a full meal.主句和从句谓语动词要依据时间来变为一般过去时。
questions and answers :What do you like to drink if you are very thirsty?How many days are there in February it it is a leap year ? Who do people go and see if they get ill ?第二类：If we catch the 10 o’clock train ,we shall (will ,can,may,must ,should ) get there in time .If it is fine tomorrow ,we can have a picnic somewhere.If you wake up before me , give me a call .条件句（从句）用一般现在表示将来，主句用shall 加动词原型或者是祈使句在if 引导的条件状语从句中，如果从句谈论的是一个有可能发生的事实及其产生的相关的结果，主句用一般将来时态，从句用一般现在时态。
if_条件状语从句_课件
goes 1.I’m sure if he _____(go) to the party, he________ (have) a great time. will have stops 2.If the rain _______(stop) tonight, we will go to the cinema. have 3.I’ll buy a computer if I ______(have) enough money. won’t get 4.You _________(not get) nervous if you do _____(do ) enough exercise. will come 6.I want to know if he _________(come) comes tomorrow, if he _______(come), I 无忧PPT整理发布 will give __________(give) the massage to him.
无忧PPT整理发布
用法：
1. 如果主句是一般将来时，从句则用一般现在时。 If it rains， I will stay at home. I’ll go with you if you don’t want to go alone. 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. You must stop if the traffic is red. 3. 如果主句是祈使句，从句同样要用一般现在时。 Don’t go and play football if you don’t finish your homework. Please call me if he comes next Sunday.
If引导的条件状语从句
--We’ll go to the library tomorrow if it __D_.
A. isn’t rain B. rain C. won’t rain D.will you do if you _____Ato the old folk’s
home visit?
2． I ____ her the answer if she ____me. A.can Dtell, will ask B. will tell, will ask C. would tell, ask D. will tell, asks
3. – What are you going to do tomorrow?
If 引导条件状语从句的时态为一般现在时
记住“主将从现”
7
----Sam, do you know if Alice ____to my party next week?
----I think she will come if she ____ free.
A comes; is B will come; will be C will come; is D comes; will be
If 引导的宾语从句放在主句之后；而if引 导的状语从句可放在主句之前也可放在主 句之后
5
1. Can you tell me if she can come to the meeting ?
2. She will not go there if it is rainy tomorrow.
3. I can’t guess if she will be angry . 4. If we help each other , we both will get
if引导的条件状语从句总结(精)
if引导的条件状语从句总结(精)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。
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。
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。
四、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。
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2.if从句用一般现在时，主句用may/might/canIf the fog gets thicker the plane may/might be diverted.3.if从句用一般现在时，主句用must/shouldIf you want to lose weight you must/should eat less bread.4.if从句用一般现在时，主句用一般现在时5.if从句用现在进行时，主句用一般将来时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.。
if条件状语从句的用法_If引导的条件状语从句
if条件状语从句的用法_If引导的条件状语从句很多英语学习者都觉得If引导的条件状语从句这个句型很难，学习起来很吃力。
下面是小编为你整理的If引导的条件状语从句的相关资料，希望大家喜欢!If引导的条件状语从句用法1.if引导的条件状语从句可以放在主句之前，也可以放在主句之后，如果放在主句之前，中间要用逗号将主句和从句隔开。
例如：If I am free, I will come to see you.= I will come to see you if I am free.如果我有空，我就来看你。
2. 在含if引导的条件状语从句的复合句中，主句用一般将来时，从句通常用一般现在时态表示将来意义，即主将从现原则。
例如：If it snows tomorrow, we will go skiing.如果明天下雪，我们就去滑雪。
3. 在含if引导的条件状语从句的复合句中，语句的谓语还可含有情态动词can、must、may等，主句也可是祈使句。
例如：If it stops raining, we can go out.如果雨停了，我们就能出去。
4. 在含if引导的条件状语从句的复合句中，如果主句部分描述的是客观事实或真理，要用一般现在时。
例如：If you heat the ice, it turns into water.如果你加热冰，它就会变成水。
if引导的非真实条件句对过去的虚拟条件从句(if):主语+had done 主句might/would/should/could+have done 对现在的虚拟if+ 主语+动词过去式(be用were)主句might/would/should/could+do对将来的虚拟if+主语+动词过去式(be用were)或主语+should do或主语+were to do主句might/would/should/could+doe.g.Tom got to the station in time because he started earlier.If Tom had started late, he would have missed the train.Do you think the thief entered through the door?No, if he had, I don't believe, he would have broken the living room window.If the book weren't so expensive, I would buy it.If you didn't live so far away, we would be able to visit you more.What would you do if you lost your passport in a foreign country?Why hasn't he come? If he should not come on time, we would have to put off the trip.2.注意事项e.g.If she hadn't work hard at English in the past, she wouldn't work as well as a secretary in a large company now. 混合时间的虚拟语气从句为对过去的虚拟，主句是现在。
if引导的四种条件状语从句
if引导的四种条件状语从句1. If it rains tomorrow, I won't go out. For example, imagine you planned a picnic, and then it starts raining. Wouldn't you be a bit disappointed and change your plans?2. If I have enough money, I'll buy that dress. Like, you see something you really love but don't have the cash, how frustrating is that?3. If she comes here, I'll be so happy. Just think, if that special person shows up, won't your heart just leap with joy?4. If he doesn't study hard, he won't pass the exam. You know, it's like building a house without a solid foundation, it's bound to collapse.5. If we leave now, we can catch the movie. Say, you really want to see that movie and you know if you don't hurry, you'll miss it.6. If they invite me, I definitely will go. Isn't it great when you get invited to something you really want to do?7. If I win the lottery, I'll travel the world. Imagine being able to go anywhere and see all those amazing places.8. If she doesn't apologize, I won't forgive her. You know how itfeels when someone wrongs you and doesn't say sorry?9. If he keeps being lazy, he'll never achieve his goals. It's like trying to run a race while sitting down!10. If we work together, we can achieve great things. Just like a team pulling together to win a championship.My view is that these if clauses really show how different choices and situations can lead to different outcomes. They make us think about what might happen and how we would react.。
If引导的条件状语从句
5. If you __d_o_n_’_t _w_o_rk___(not work ) hard , you _w_o_n_’_t _p_as_s_(not pass) the exam.
6. If she __m__e_n_d_s_(mend) the computer , her father __w_o_n_’t_b_l_am__e_(not blame ).
1.有if引导的条件状语从句的复合句中，当主句和从句的 主语均为you时，可转换为“祈使句，and+简单句”或
“祈使句，or+简单句” You can pass the exam if you work hard. Work hard ----------------，and you will pass the exam.
If you don't hurry up,you will be late again.
or Hurry up,------ you will be late again.
2. 借助介词with 或without来转换。
例如: If you help me, I’ll finish my job soon.
If引导的条件状语从句
潘店镇中学
if引导的条件状语从句
例句：If people obey the traffic rules, →从句 there will be fewer accidents. →主句
if:从属连词，意思是：“如果，假如，倘若”
： 结构
if引导的条件状语从句既可以放在句子前， 也可以放在句子后。
时态：
if引导的条件状语从句， 主句用一般将来时（will）,从句用一般现在时。
→主句谓语中也可以含有情态动词， 如：must,can,could,should等
条件状语从句的三种形式
条件状语从句的三种形式一、if引导的条件状语从句1、如果你乐意，我们可以去公园散步。
If you are willing, we can go for a walk in the park.2、如果他住得太远，他就不能每天都来上班。
If he lived too far, he couldn’t come to work every day.3、如果有机会，我真想去法国旅行。
If I have a chance, I would really like to travel to France.4、如果你想获得更好的成绩，你应该对自己更严格一些。
If you want better grades, you should be stricter with yourself.二、unless引导的条件状语从句1、除非你受邀，否则别去参加他们的派对。
Unless you are invited, don't go to their party.2、除非你有权限，否则请勿进入这一地区。
Unless you have permission, do not enter this area.3、除非你将成绩提高，否则不会被录取。
Unless you improve your grades, you will not be accepted.4、除非天气转好，否则我们就不会去公园玩耍。
Unless the weather turns better, we won't go to the park to play.三、as long as引导的条件状语从句1、只要你努力，我们就可以赢得这场比赛。
As long as you try hard, we can win the game.2、只要你坚持，你就可以完成这项任务。
As long as you persist, you can finish the task.3、只要你学习努力，你就可以获得优等奖学金。
八年级英语Unit 10 语法点If 引导的条件状语从句
单元语法讲练专题语法精讲：If 引导的条件状语从句一．if引导的条件状语从句含义：条件状语从句表示主句动作发生的前提、条件、假想、推测等情况。
位置：if引导的条件状语从句可放在主句后，也可放在主句前（必须用逗号隔开）。
时态：当主句是一般将来时，从句用一般现在时表示将来。
主句从句例句主句是一般将来时从句时态应用一般现在时He will come here on time if it doesn't rain.如果不下雨，他会按时到达这儿。
主句是祈使句Please stay at home if it rains tomorrow. 如果明天下雨，请留在家里。
主句的谓语含有can,may,must等情态动词If you like,you can stay here for the weekend.你如果愿意，可以留在这里过周末。
主句的谓语是hope, wish,want等动词I want to go there if the rain stops.如果雨停了，我想去那儿。
二．if引导的条件状语从句遵循主过从过、主将从现的原则。
（1)主过从过。
If he got up earlier, he would not be late yesterday.如果昨天他早点起床，就不会迟到了。
（2)主将从现。
①If it rains tomorrow, I won't climb the hills.如果明天下雨，我就不去爬山。
②If it doesn't rain tomorrow, I will climb the hills.如果明天不下雨，我就去爬山。
（3)主祈（祈使句）从现。
Climb the hills with me if it doesn't rain tomorrow.如果明天不下雨，和我去爬山吧。
（4)主情（情态动词）从现。
If it doesn't rain tomorrow, I might climb the hills.如果明天不下雨，我可能会去爬山。
总结好的：if引导的条件状语从句
总结好的：if引导的条件状语从句if引导的条件状语从句if1) 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 .11. If I_____(have) time tonight ,I _______(finish) the book I’m reading.12. If it ______(rain) next weekend , we_______(not be able to ) plant the vegetable .13. If it_______(rain),we______(stay) at home .14.If she______(arrive) ,she _____(phone) me .15. If he_____(call),tell him I’ll ring back .⼆、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. I ______ (have) a bake sale if I ____ (need) money for education.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. Peter ____ (major) in English if he ____(pass) the exams in Peking University.⼆、完成句⼦1. 他如果看电视太久了，他的⽗母会不⾼兴。
if引导的条件状语从句的用法
（3）假设
真的，或者有可能成为真的；
（二）假设将来，假设的条
将来
件是将来可能实现的。
1. if 非真实条件句（虚拟）——假设现在
（二）遵循的原则
should do
might+do
例 7 If I _____(be) a bird,I would fly to you right
状态，是正在玩球的意思，
所以此空填 is playing。
3. if 引导的真实条件状语从句——假设将来
例 3 If it _____(rain) tomorrow,we will stay at home.
解析：如果你不想受伤，
就不要玩刀。根据 Don’
t
play with the knife,主句是祈使句，所以从句为 if 引导
to the park.
he will take me to the park,主句用的一般将来时，而且
可以分析出，他哥哥现在还没有回，所以从句为 if 引
导的表将来的条件状语从句。根据“主将从现”的原
则，此空填 comes。
2. if 非真实条件句（虚拟）——假设过去
例8
Years ago if someone_____ (turn) round to
批改学生作文时，遇到拼写错误较多的学生可以这样
及各个时代相关代表作品的赏析，感受中西方文化的
评价：
不同，提高其审美水平；在进行人教版（2014）高中英
neat and tidy！
学生参观学校的科学实验室或者本地的科技馆，感受
1. 认 同 欣 赏:I like your handwriting，which is so
透析if引导的四种条件状语从句
透析if引导的四种条件状语从句作者：王玉峰来源：《青苹果·高一版》2016年第11期英语中的if条件句由两部分组成，一个是连词if引导的条件状语从句，一个是表示结果的主句，if从句可置于主句之前或之后。
主从句的谓语动词的时态形式取决于说话者认为结果是否是真实的。
if条件句分为零条件句、第一条件句、第二条件句和第三条件句四种，见下表（The 4 Types of Conditionals）：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。
if引导的条件状语从句
if引导的条件状语从句一、概念条件状语从句是表示主句动作发生的前提或条件的从句，即“在......条件下某事才能发生”。
通常由连词if引导二、位置if引导的条件状语从句可位于主句之前或之后。
位于主句之前要用逗号与主句隔开；如果放在主句之后，其前不必用逗号。
三、时态若主句为一般将来时、祈使，或主句含有can、may、must、 have to等情态动词或短语时，if引导的条件状语从句要用一般现在时。
（主将从现）例句：1.If it rains tomorrow, I won't go to school.=I won't go to school if it rains tomorrow.如果明天下雨，我就不去上学。
2.If he watches TV, I will watch TV，too.如果他看电视，我也会看电视。
3.You can pass the exam if you study hard.如果你努力学习，你就能通过这次考试。
四、句型相互转换:①祈使句+and/or+一般将来时的句子If you are quick, you won 't be late for school.= Be quick, and you won't be late for school.= Be quick, or you will be late for school.②含有介词with或without的句子If there is no water, fish can 't live. =Fish can't live without water.五、if还可引导宾语从句，意为“是否”。
I don't know if he will come back tomorrow.我不知道他明天是否回来。
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You won’t pass the exam if you don’t work hard.=You won’t pass the exam unless you work hard.If you don’t go to bed earlier,you will feel tired in the morning.=Unless you go to bed earlier,you will feel tired in the morning.If it doesn’t rain,he will play with me tomorrow.=Unless it rains,he will play with me tomorrow.If she doesn’t come,I’ll go shopping alone=Unless she comes,I’ll go shopping alone.if条件状语从句与祈使句,and/or＋一般将来时的句子转化If you get up early,you’ll get there on time.=Get up early,a nd you’ll get there on time.=Get up early,or you won’t get there on time.If you get up early，you won't be late for school.=Get up early，and you won't be late for school.=Get up early，or you will be late for school.If you don’t get up early,you won’t c atch up with the early bus. =Get up early,and you will catch up with the early bus.=Get up early,or you won’t catch up with the early bus.if条件状语从句与without的句子转化If there is no water,we can't live.=We can't live without water.If there is no water,fish will die.=Fish will die without water.If you help me,I’ll finish the work soon.=With your help,I finish the work soon.if条件状语从句与祈使句,and/or＋一般将来时的句子转化If you get up early,you’ll get there on time.=Get up early,and you’ll get there on time.=Get up early,o r you won’t get there on time.If you get up early，you won't be late for school.=Get up early，and you won't be late for school.=Get up early，or you will be late for school.If you don’t get up early,you won’t catch up with the early bus.=Get up early,and you will catch up with the early bus.=Get up early,or you won’t catch up with the early bus.1. your friend ,I'll tell you.eB.will comeesD.are coming2. If you go to college，you a good education.A.will getB.getC.getsD.got3.I want to know if they tomorrow.eB.will come C comes D.came4.Take enough exercise, you'll be in good heath.A.orB.soC.butD.and5.If it (not rain),he (play)basketball withme tomorrow.6.If Uncle Lan ______(come),I______(call)you up.7.She must see a dentist if she______(have)a toothache.8.Please wake me up if he______(come)back.9.Hurry up！Or you ______(be)late again.10.If you don’t be quic k,you (be)late.1.We won’t wait for you you can’t arrive on time.A.untilB.whenC.afterD.if2.The children will go to the zoo if it (not rain)this Saturday.3.If she work hard,she be able to go to colleage.A.not,notB.won’t,won’tC.won’t,doesn’tD.dpesn’t,won’t4.If I run every day,I (be)healthier.5.If it (not rain),he (play)with me tomorrow.6.She must see a dentist if she (have)a toothache.7.Study hard,or you (not pass)the test.8.If you (not go)to bed earlier,you will feel tired in the morning.9.If he (be)free tomorrow,he will come to your birthday party.10.We will go to the zoo if it (not snow)tomorrow.11.If it is fine tomorrow,I (go)for a filed trip.。
If引导的条件状语从句
If引导的条件状语从句
3. 时态要求上有区别
1.I want to know if there will be
aቤተ መጻሕፍቲ ባይዱ
sports meeting next month.
If 引导的宾语从句的时态由主句及本身时 态决定；
2.If it doesn’t rain , we’ll hold it.
If 引导条件状语从句的时态为一般现在时 记住“主将从现”
If引导的条件状语从句
if 引导的条件状语从句和if 引导的宾 语从句的区分:
1. if 在句中的含义不同 I want to know if he is a teacher.
whether
If 在宾语从句中翻译为“是否”
I’ll go to see you if I am free next week.
If引导的条件状语从句
变换：
1.有if引导的条件状语从句的复合句中，当主句和从句的 主语均为you时，可转换为“祈使句，and+简单句”或
“祈使句，or+简单句” You can pass the exam if you work hard. Work hard ----------------，and you will pass the exam.
→主句谓语中也可以用had better(not)do,提建议 例句：如果你想减肥，你最好锻炼。 eg:If you want to lose weight,you had better take some
语法四 (if引导的条件状语从句及感叹句)
if 引导的条件状语从句if(如果)引导的条件状语从句考点如下:1.______________________________________________________________。
如: (1)If he runs, he’ll get there in time. 如果他用跑的，他就会及时赶到那儿。
(2) We_________________(go) swimming if it is sunny.(3) The students will make snowmen if it______________(rain) tomorrow.(4) I_______________(climb) the mountains if it____________(not snow)2. _________________________________________________________________________________如: If it stops snowing, we can go out.3. ___________________________________________________________________如: If you leave the room, please turn off the light.活学活用：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. I ____________ (have) a bake sale if I _____________ (need) money for education.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. Peter ________ (major) in English if he ____ (pass) the exams in Peking University.选择题：（）1. If you _____ to the party, you’ll have a great time.A. will goB. wentC. goD. going（）2. It will be a long time ____ Peter _____ his work.A. since, has finishedB. after, finishesC. when, will finishD. before, finishes.（）3. I ____ her the answer if she ____me.A. can tell, will askB. will tell, will askC. would tell, askD. will tell, asks（）4. –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（）5. I will give the book to him if he______here next Sunday.A. will comeB. comesC. is comingD. came感叹句一、感叹句的构成：1. _________________________________________________________________________如: (1)How beautiful she is!(2) How quickly the boy runs!2. __________________________________________________________________________如：(1)What a beautiful girl she is!(2) What an interesting book it is!3. ____________________________________________________________________________如: (1) What bad weather it is!(2) What beautiful girls they are!二、巩固练习：（）1.【2016广州】---____ bad weather! We can’t go for a picnic because of the rain today. ---I hope it’ll stop soon.A. WhatB. HowC. What aD. How a（）2.【2016福州】 ---_______foggy day ! ---Something must be done to solve the haze problem.A. HowB. WhatC. What aD. How a（）3.【2016漳州】---_____beautiful blouse she is wearing! ---But it doesn’t look good against her skin．A．What B．What a C．How D. How a（）4.【2016深圳】---We are going to have a basketball game against Class Two this afternoon.---_________ exciting! I hope our team will win.A. HowB. WhetherC. WhatD. How a（）5.【2016十堰】__________ weather it is today!A. What hotB. How hotC. What a hotD. How a hot（）6.【2016恩施】26.---______ wonderful news, isn't it? ---Yes, it is.A. What aB. WhatC. HowD. What a（）7.【2016咸宁】---__________ sweet music! ---And I really like the V oice of China TV programs.A. WhatB. What aC. HowD. How a（）8.【2016龙东地区】---What can you see in the garden? ---Flowers. _______ beautiful they are!A. WhatB. HowC. How aD. What a（）9.【2016云南】. --_____sweet song it is! ---Yeah, it’s My Heart Will Go On sung by Celine Dion.A. HowB. How aC. What aD. What 10.（）10.【2016陕西】Look! Laura is getting the first place. fast runner she is!A. HowB. WhatC. How aD. What a（）11.【2016无锡】 __________ sunshine! Shall we take a walk in the garden?A. What a beautifulB. What beautifulC. How a beautifulD. How beautiful（）12.【2016南京】---____ brave Zhang Hua is! ---Yes. He helped his neighbor, Mrs. Sun out of the fire.A. What aB. HowC. How aD. What（）13.【2016铜仁】---__________ sweet music! Do you like it? ---Mm, it __________ beautiful!A. How; listensB. How a; soundsC. What a; listensD. What; sounds（）14.【2016年临沂】__________ delicious these beef noodles are!A. WhatB. HowC. What aD. How a（）15.【2016年烟台】__________ honest man he isA. WhatB. What anC. HowD. How an（）16.【2016滨州】---__________ interesting the film is! ---Yes. I have seen it twice.A. WhatB. HowC. What anD. How an祈使句一、定义：祈使句是表示命令或者请求别人去做某事的句子。
if 引导的条件状语从句
概念：
由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。
句型结构： • 主句+if条件状语从句 • 或者if条件状语从句，+主句
时态:
if条件状语从句要用一般现在时，主句是一般将 来时态或者是表示将来含义的句子。
即： 主将从现
主句（将来），从句（一般现在时）即：主将从现
Problems
If you have some problems in your life, what will you do?
If I have enough money, I will travel around the world
1.If he__d_o_e_s_n_’t_d__o__ (not, do )it , I___w_i_ll_d_o____(do) it. 2.If you _a__re_ (be) late for school ,my teacher _w__il_l _b_e__(be) angry. 3 If she__w__in_s___ (win) the prize ,we _w_i_ll_b__e_(be) happy. 4. I _w__il_l_s_ta_y__(stay) at homeIf it ___ra_i_n_s____( rain). 5.. we _w_i_ll_p_l_a_y___(play) football If it __i_s______sunny.
Look and say
If I’m hungry,
I will_e_a_t_s_o_m__e__fo_o_d__.
If I’m tired,
I will__h_a_v_e_a__r_e_s_t __.
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◆if引导的条件状语从句
条件状语从句是在复合句中作条件状语的句子。
表示假如有从句的动作发生就会有主句的动作发生。
条件状语从句常由从属连词if引导。
◆if引导的条件状语从句使用须知：
一、位置
if引导的条件状语从句，既可放在主句之前也可放在主句之后。
当从句置于主句之前时，常用逗号与主句隔开。
例如：
You will catch the bus if you get up early.
=If you get up early, you will catch the bus.
如果你早起的话，就能赶上公共汽车。
二、时态
应遵循主、从句时态呼应的原则。
当主句是一般现在时(包含祈使句和含情态动词can, may, must等的句子)，从句也用一般现在时。
例如：
You must see the doctor if you are ill.
如果你生病了，你必须去看医生。
If you want to go skating, wear warm
clothes.
如果你想去滑冰，穿上暖和点的衣服。
如果主句是一般将来时，从句必须用一般现在时。
例如：
You will be late for school if you get up late.
如果你起晚了，你上学将迟到。
If it rains tomorrow, we won’t go to the Great Wall.
如果明天下雨，我们就不去长城了。
三、注意事项
1. 在if引导的条件状语从句中，当主句是一般将来时时，不能够使用be going to结构，而要用will。
例如：
I’ll help you with y our English if I am free tomorrow.
如果明天我有空，我会帮你学英语。
2. 在if引导的条件状语从句中不能够使用some，而要用any。
例如：
If you have any questions to ask, please come to my office.
如果你有问题要问的话，请到我办公室来。
四、同义句转换
if引导的条件状语从句可以转换成简单句，其方法如下：
1. 借助“祈使句+and/ or+简单句”。
其中and表示句意顺承，or表示转折。
例如：
If you work hard, you’ll pass the exam.
=Work hard, and you’ll pass the exam.
如果你努力学习，你就会通过考试。
If you don’t hurry up, you’ll be late.
= Hurry up, or you’ll be late.
如果你不快点，你将会迟到。
2. 借助介词with 或without来转换。
例如：
If you hel p me, I’ll finish my job soon.
=With your help, I’ll finish my job soon.
如果你帮我，我将很快完成我的工作。
If there is no water, fish may die.
= Fish may die without water.
如果没有水，鱼可能会死。
【巩固练习】
一、用所给动词的适当形式填空。
1.If I run every day, I ______(be) healthier.
2.If you _____(not eat) healthily, your body won’t be well.
3.If you sleep well, you _____(feel) better.
4.If you _____(relax), you’ll sleep better.
5.Do more exercise, and it will make your mind and body _____(work) better.
二、完成句子（一空一词）。
1．如果你要过马路，不要乱跑。
_____ _____ around if you cross the road.
2．明天如果下雨的话，我们将呆在家里。
We _____ _____ at home if it _____ tomorrow.
3. 如果你能说好英语的话，你就可以容易地与外国人交谈。
If you can _____ English well, you _____ ______ ______ foreigners easily.
4.如果你对别人好，人们也会对你好。
If you’re nice to people, they _____ _____ _____ to you, too.
5.如果学生不对考试如此担心的话，他们会更开心的。
If students don’t worry about exams so much, they _____ ______ ______.
三、同义句转换。
1. Study hard, or you won’t pass the exam.
If you study hard, you _____ _____ the exam.
2. Take a taxi, and you’ll catch the train.
_____ you _____ a taxi, you’ll catch the train.
3. If you go to bed early, you won’t feel tired in the morning.
_____ _____ _____ early, _____ you won’t feel tired in the morning.
4. If you don’t work hard, your teacher will probably be angry.
______ _____, _____ your teacher will probably be angry.
5. Breathe deeply for one minute, and you’ll feel relaxed.
_____ you ______ deeply for one minute, you _____ _____ relaxed.
四、阅读下面的广告，然后用“if..., ...will...”句式回答问题。
Travel Brochure
Cheap Cheap Cheap. Beijing for the weekend. 3D/2N. Book Now.
Five Star Hotel—Save 50%
Four Star Hotel—Save 40%
Three Star Hotel—Save 30%
Book before December 31st. Breakfast Included.
City Tour 50RMB. Visit the Great Wall 100 RMB.
1. How much will you save if you stay at the Four Star Hotel?
___________________________________
2. How much will you save if you stay at the Three Star Hotel?
___________________________________
3. What will happen if you book after December 31st?
___________________________________
4. How much will you have to pay if you want to go on the City Tour?
___________________________________
5. How much will you have to pay if you want to visit the Great Wall?
Key: 一、1. will be2. don’t eat3. will feel4. relax5. work
二、1. Don’t run2. will stay, rains3. speak, can talk with 4. will be nice5. will be happier
三、1. will pass 2. If, take3. Go to bed, and4. Work hard, or5. If, breathe, will feel
四、1. If I stay at the Four Star Hotel, I will save 40%.2. If I stay at the Three Star Hotel, I will save 30%. 3. If
I book after December 31st, it will be too late and more expensive.4. If I want to go on the City Tour, I will have to pay 50 RMB.5. If I want to visit the Great Wall, I will have to pay 100 RMB.。