If, unless 专项练习
一、完成下列句子
1. I’m sure if he _____(go) to the party, he________ (have) a great time.
2. If the rain _______(stop) tonight, we will go to the cinema.
3. I’ll buy a computer if I ______(have) enough money.
4. You _________(not get) nervous if you _____(do ) enough exercise.
5. I want to know if he _________(come) tomorrow, if he _______(come), I __________(give) the massage to him.
6. Comrade Wang didn't know if there _______ (be) on English evening that day.
7. Please tell me if she _______ (come) again next time.
8. Mike asked me if we _______(ask) any questions the next class.
9．The twins ______________ (fight) if they_______________ (argue).
10. I ____________ (have) a bake sale if I _____________ (need) money for education.
二、选择
( )1. I don’t know _____ he will come tomorrow. _____ he comes, I’ll tell you.
A. if; Whether
B. whether; Whether
C. if; That
D. if; if
( ) 2. He said he would help me with my maths if he _______ free.
A．was B．will be C．would be D．is
( ) 3. Tommy, do you know if Frank ________ to the zoo this Sunday if it ________ -Sorry, I have no idea.
A. will go; is fine
B. goes; is fine
C. will go; is going to be fine
D. goes; will be fine
( ) 4. -Listen! It is still noisy in the head teacher’s office.
-Go and see ________ they have finished correcting the papers yet.
A. though
B. whether
C. unless
D. while
( ) 5. He asked me ________ we could go to Beijing to watch the game by plane.
A. that
B. if
C. how
D. what
（）6 . The volleyball match will be put off if it ______.
A. will rain
B. rains
C. rained
D. is raining
（）7. Difficulties are nothing if we ______ not afraid of them
A. will
B. shall
C. are
D. do
（）8. I don’t like to be interrupted if I______.
A. speak
B. will speak
C. am speaking
D. spoke （）9. If you______ the book you will understand the story better.
A. will be reading
B. have read
C. will have read
D. read
( ) 10. There is going to______ a sports meeting next week. If it ______ , we’ll have to cancel it..
A. be; will rain
B. have; will rain
C. be; rains
D. give; is going to rain
（）11. If you ______ a chance to study in a foreign country, just take it.
A. getting
B. had got
C. will get
D. get
( ) 12. I want to know if they ____ the spring sports meeting next month.
If they ____ it, I must get ready for it.
A. hold; will hold
B. will hold; hold
C. hold; hold
D. will hold; will hold
（）13. –Look, what have you done
-Sorry. I think if I ________ another chance, I’ll do it better.
A. give
B. will be given
C. will give
D. am given
（） you _______ him tomorrow, please ask him if he ______ to work on the farm with us.
A. see ; goes
B. will see; goes
C. will see; will go
D. see; will go
( ) 15. It makes no difference __________.
A. whether will you come tomorrow.
B. Whether or not will be pass the exam
C. If he will come to the meeting or not
D. Whether he will come to the meeting or not
( ) 16. Even now many people still remembered ________ when hey heard about the 1976 earthquake in Tangshan.
A. what were they doing they were doing
C. what they were doing they were doing
( ) 17. In summer, food goes bad easily _____ it is put in the refrigerator.
A. until
B. if
C. unless
D. since
( ) 18. –I hear Jack Chan will come to Shanghai next week.
-Really _______ he comes, my younger sister will be very happy.
A. If
B. Until
C. Unless
D. Before
( ) 19. We will have no water to drink______ we don’t protect the earth.
A．until B. before C. though D. if
( ) 20 –May I surf the Internet now
- No, _______ you have finished doing the dishes.
A. unless
B. if
C. because
D. when
三、句型转换
they want fried chicken He asked the boys.(改为宾语从句)à
He asked the boys _______they ______fried chicken.
the watch made in ShanghaiI don’t know.(改为宾语从句)à
I don’t know_ ______the watch _______made in Shanghai.
3..“Do you want to try something new” Tom’s mother asked him.(同义句)
Tom’s mother asked him _____________________to try something new.
4. “Do you wash your clothes yourself” Tom asked the girl next to him.(改复合句)
Tom asked the girl next to him ______ ______ ______ her clothes herself.
5. Did Peter come here yesterday Li Lei wants to know. (改为宾从)
Li Lei wants to know ______ Peter ______ here yesterday.
6、You want to record. You should press the red button.(合并成含if的条件句)
________________________________________________________________.
7、I will go swimming. It won’t be cold tomorrow. (合并成含if的条件句)
_________________________________________________________________.
8、“Do you want to try something new” Tom’s mother asked him. (改为复合句,句意不变) Tom’s mother asked him________________to try something new.
9.我还没有决定是否去参加迈克的生日聚会。
I haven’t decided _________I __________ to Mike’s birthday party .
10、张清问他奶奶是否还要些面条。
Zhang Qing asked his grandma _________she __________noodles.
11、 If you are not brave, you’ll lose your last chance.（保持句意不变）
__________ you are ________, you’ll lose your last chance.
12、 Unless you go to bed early, you will feel tired. (保持句意不变)
_______you ______ go to bed early, you will feel tired.
13、If you practice playing the piano regularly, you will improve your skills.
You will ______improve your skills ________ you practice playing the piano regularly.14、If you don’t improve your handwriting, you’ll lose marks in the exam.
________ you ________ your handwriting, you’ll lose marks in the exam.
15、I will sleep with the window open unless it is too cold.
________ it ______ too cold, I will sleep with the window open.
四. 填入适当的连词。
1.My brother is ill, ________ I have to stay at home.
2.The film must be very interesting, ________ many people are buying tickets in line.
3.My computer is new, ________ it is too expensive.
4.There are a lot of stories about the UFOs, _______ no one knows whether they are true or not.
5.Put on your coat, ________ you will catch cold.
6.She got a “C” in English test, ________ she had tried his best.
7._____you have a few more days’ rest, you’ll feel better.
8.I really don’t know ______ it is going to rain or not this afternoon.
9. _____ you get enough sleep, food, rest and exercise, studying English can be very effective and interesting.
10. _______ the thief is caught red-handed, he will not admit anything.
五、填入适当的连词
John King wanted to become a teacher, he liked children very much, he was 21 years old, he began teaching in a small school. He was good at teaching, he laughed a lot with the children in class. One day a girl asked him, “Mr King, why does a man‘s hair become grey his beard does. ”John couldn’t answer the question, he didn‘t get angry. He wondered some one could answer it.
Then one of the boys said，“I know, Mr King! Men’s hair becomes grey first it‘s sixteen years older their beard.”
If，unless 一结构 If 作“如果”解，用来引导条件状语从句，可放在主语前面或后面。二时态 1 当谈论未来可能出现的情况时,主句用一般将来时,if从句用一般现在时。 例：If I am free, I will come to see you . 2 当谈论可预测的、反复出现的情况时，主句和if 句都用一般现在时，此时if 相当于when. 这类句子通常表示不受时间限制的自然法则表普通真理和客观事实 例：If you cool the water below zero, it turns into ice. 三转换 If 从句和主句还可以由“祈使句+and/or+简单句代替”，and 表示句意顺承；or则意为“否则”。 If you study hard, you will pass the exam. = Study hard, and you’ll pass the exam. If you don’t hurry up, you’ll miss the train. = Hurry up, or you’ll miss the train. 另外，unless 也可以引导条件状语从句，相当于if…not,“如果不、除非”。 I will plant the flowers if it doesn’t rain tomorrow. = I will plant the flowers unless it rains tomorrow. Unless: conj. 除非, 如果不 Unless you take more care, you’ll have an accid ent. 如果不多加小心的话，你会出事故的。 更详细的如下 一、unless的基本用法 unless“除非……如果不……”引导否定意义的真实条件句有时也可引导非真实条件句 (1)主句为肯定句。 Unless I visit every bookstore in town．I shall not know whether I can get what want． 如果我不到城里每一家书店去看看，我就不知道是否能买到我想要的书。 You will miss the bus unless you hurry up．你要不快点就会错过班车。 (2)主句为否定句。 I wouldn't be saying this unless I were sure of the facts． 要是我对这些事情没有把握，我就不说这话了。 二、应注意的一些问题 1．unless不能与if'"not换用的情况 unless在意义上相当于if...not，因此在有些场合中unless与if...not可互换使用。
Unless 与 if not 1. unless 与if … not 都可以用来引导条件状语从句， unless 的语气较重，从句中的动词用一般现在时代替一般将来时。例如： We will visit the Great Wall tomorrow unless it rains. 除非明天下雨，否则我们就去参观长城。 I won't believe what you said unless I've seen it with my own eyes. 我要亲眼所见才能相信你所说的。 Don't enter the lab unless you are permitted to. 只有经过允许才能进入实验室。 2. 有的同学在遇到使用 unless 的句子时，弄不清该用肯定还是否定而出错。这时最好的办法是将 unless 替换成if … not 的结构，从而就一目了然了。例如： I won't go to the party unless I am invited. （ =I won't go to the party if I am not invited. ） 如果没有人邀请我，我是不会去参加聚会的。 3. 由于 unless 与if … not 的语气不同，有时两者替换后，其意思就不一样了。例如： Unless he were my friend, I shouldn't expect his help. 除非他是我的朋友，我才会期待他的帮助。（本句的潜在意思为：他并不是我的朋友。） If he were not my friend, I shouldn't expect his help. 如果他不是我的朋友，我就不会期待他的帮助了。（本句的潜在意思为：正因为他是我的朋友，我才会期待他的帮助。） 4. 在平时使用过程中，要注意 unless 与 until 的区别。
1）(肯定)表示“除……之外(还)……” besides 和in addition to 同义 She knows Japanese besides English. In addition to English, she knows Japanese. 2）(否定)当与nothing，nobody或no one等否定意义的不定代词连用时，表示“除…之外(其余都不)”。besides与except同义， except 表示“除……外，(其余都)……”，常与“all，every，no，none，n othing”等含有整体肯定或否定意义的词连用。 All of them went to climb the mountain except me. 3）except for：它的宾语与前述对象完全是两回事。 The room was very cold and, except for Jack, entirely empty完全是空荡荡的. 4）except：指同一类事物的总体中除去一部分。 He gets up early everyday except Sunday. 5) except that 后面跟从句，语意与上同。 He has always been in good health except that he has had a slight headache in the past few days. 6）but：常可与except互换，强调“不在其中”。 Everyone attended the meeting but Mary. 7）besides:强调“除此之外，还包括”。 She can speak French and Japanese besides English. 8）apart from；其含义主要依据上下文而定，有时可与except换用，有时可代替besides. Apart from the price, the hat doesn't suit me. 9）except 用于同类之间。 other than：固定用法，用于否定句中。意思是除了……，除……之外。与excep/but 相同，都是表示从总体中除去一部分，后接名次、代词或不定式。 except for 用于不同类的。除此之外，什么都在 apart from 在同类或不同类都能用 10）except for和apart from接名词, 但apart from是从"什么分离出来"的意思 而except for是"除了"的意思 11) unless conj. 除非，如果不 . unless用于引出某事发生或成立所必需的条件
STRUCTURE 结构 As mentioned above, unless is a conjunction which we use in conditional phrases. In written English, the clause that follows unless is the subordinate clause (SC) meaning that it needs a main clause (MC) to make a complete sentence. It is similar to how we use if in conditional phrases. 之前提过，unless是在条件句中使用的连词。在书面语种，使用unless的从句叫做从属句(SC)，需要主句(MC)让句子完整。这就像if在条件句里的用法一样。 When unless comes before a main clause we use a comma: unless放在主句之前加逗号： Unless it rains, we’ll go for a picnic tomorrow. [en](SC) (MC) [/en] 除非下雨，否则我们明天去野餐。 When the main clause comes first, no comma is required: 主句在前，不需要逗号： They won’t come unless you invite them.
[en](MC) (SC) [/en] 除非你邀请他们，否则他们不会来。 Unless is like If in that we don’t not use will/would after it. We only use the present simple tense. 像if一样，我们不会在unless后面使用will/would。只使用一般现在时。 Unless I hear from you, I’ll see you at 5pm. 除非你通知我，否则我和你下午5点碰面。 HOW DO WE USE “UNLESS”? 如何使用“unless”? Unless and if not unless和if not Ok, so unless is similar to “if …..not” and together they mean “except if”. Note: We refer to real conditional situations and NOT impossible situations. unless和if…not很相似，它们都表示“除非”。注意：我们指的是真实的条件情况，而不是不可能的情况。
C h a p t e r1语法If 和unless引导的条件状语从句 我们用if引导的条件状语从句来讨论可能的条件以及该条件成立时可能的结果。一. 学习if引导的条件状语从句的用法，我们可先从如下的口诀入手： If条件句不一般，几个要点记心间； 条件句，放在前，逗号要句中间 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。 We can walk there if we can’t find a bus. 如果我们找不到公车，也能走路去那里 主句条件状语从句 If it rains tomorrow, we will not go to the zoo. 如果明天下雨，我们就不去动物园 条件状语从句主句 What will you go if you find someone in danger? 主句条件状语从句 如果你发现某人有危险，你会怎么做？ If 条件句有不同的类型，简述如下： 1. 用if条件句表达客观真理或普通现象 If条件句用于表达客观真理或普通现象时，主，从句时态均用一般现在时，如：Eg. If you freeze water, it turns into ice. A fish dies if you take it out of water. 2. 用if 条件句表示将来可能发生的事情 在表示将来可能发生的事情的if条件句中，主句用一般将来时，而if从句用一般现在时表示将来的时间，即主将从现
Eg. If I like the house, I will buy it. 如果我喜欢这房子，我就会把它买下 I will tell her if I see her. 如果我见到她，我就会告诉她。 主句中的will也可以用情态动词can, may 或might等代替。如： Eg. If they are friendly，I might invite them to the party. 如果他们很友善，我可能会请他们去参加聚会 If we hurry now, we can stop for coffee later. 如果我们现在抓紧时间，就可以稍后去喝咖啡注意：在条件句中，主句部分只能使用动词will的一般将来时，不能使用be going to的结构 二. Unless 的条件句 表示在特定条件下，才决定做或不做一件事，中文用的连接词一般是“除非”和“否则”。如：除非刮台风，否则演唱会将如期进行。在英语中，我们可以用unless表达这个意思，相当于if not。以这个句子为例： The concert will be held as schedule unless there is a typhoon. = the concert will be held as schedule if there is not a typhoon She will keep on singing unless she is told to stop. 她会一直唱下去，除非有人叫她停止 = she will keep on singing if she is not told to stop 也可以用or(否则) 来做同义句转换 Unless you listen carefully, you won’t know the answer. = if you don’t listen carefully, you won’t know the answer. = you should listen carefully, or you won’t know the answer. 深圳中考题： 1. If I ________ his phone number, I will tell you. A.find B. found C. will find D. have found 2. We will go camping if it _______ tomorrow.
If, unless 专项练习 一、完成下列句子 1. I’m sure if he _____(go) to the party, he________ (have) a great time. 2. If the rain _______(stop) tonight, we will go to the cinema. 3. I’ll buy a computer if I ______(have) enough money. 4. You _________(not get) nervous if you _____(do ) enough exercise. 5. I want to know if he _________(come) tomorrow, if he _______(come), I __________(give) the massage to him. 6. Comrade Wang didn't know if there _______ (be) on English evening that day. 7. Please tell me if she _______ (come) again next time. 8. Mike asked me if we _______(ask) any questions the next class. 9．The twins ______________ (fight) if they_______________ (argue). 10. I ____________ (have) a bake sale if I _____________ (need) money for education. 二、选择 ( )1. I don’t know _____ he will come tomorrow. _____ he comes, I’ll tell you. A. if; Whether B. whether; Whether C. if; That D. if; if ( ) 2. He said he would help me with my maths if he _______ free. A．was B．will be C．would be D．is ( ) 3. Tommy, do you know if Frank ________ to the zoo this Sunday if it ________? -Sorry, I have no idea. A. will go; is fine B. goes; is fine C. will go; is going to be fine D. goes; will be fine ( ) 4. -Listen! It is still noisy in the head teacher’s office. -Go and see ________ they have finished correcting the papers yet. A. though B. whether C. unless D. while ( ) 5. He asked me ________ we could go to Beijing to watch the game by plane. A. that B. if C. how D. what （）6 . The volleyball match will be put off if it ______. A. will rain B. rains C. rained D. is raining （）7. Difficulties are nothing if we ______ not afraid of them A. will B. shall C. are D. do （）8. I don’t like to be interrupted if I______. A. speak B. will speak C. am speaking D. spoke （）9. If you______ the book you will understand the story better. A. will be reading B. have read C. will have read D. read ( ) 10. There is going to______ a sports meeting next week. If it ______ , we’ll have to cancel it.. A. be; will rain B. have; will rain C. be; rains D. give; is going to rain （）11. If you ______ a chance to study in a foreign country, just take it. A. getting B. had got C. will get D. get ( ) 12. I want to know if they ____ the spring sports meeting next month. If they ____ it, I must get ready for it. A. hold; will hold B. will hold; hold C. hold; hold D. will hold; will hold （）13. –Look, what have you done? -Sorry. I think if I ________ another chance, I’ll do it better. A. give B. will be given C. will give D. am given （）14.If you _______ him tomorrow, please ask him if he ______ to work on the farm with us. A. see ; goes B. will see; goes C. will see; will go D. see; will go ( ) 15. It makes no difference __________. A. whether will you come tomorrow. B. Whether or not will be pass the exam C. If he will come to the meeting or not D. Whether he will come to the meeting or not ( ) 16. Even now many people still remembered ________ when hey heard about the 1976 earthquake in Tangshan. A. what were they doing B.that they were doing C. what they were doing D.if they were doing ( ) 17. In summer, food goes bad easily _____ it is put in the refrigerator. A. until B. if C. unless D. since ( ) 18. –I hear Jack Chan will come to Shanghai next week. -Really? _______ he comes, my younger sister will be very happy. A. If B. Until C. Unless D. Before ( ) 19. We will have no water to drink______ we don’t protect the earth. A．until B. before C. though D. if ( ) 20 –May I surf the Internet now? - No, _______ you have finished doing the dishes.
unless 和until 用法区别 A good storyteller must be able to hold his listeners' curiosity ________ he reaches the end of the story. A. when B. unless C. after D. until 析:答案是D。不少同学可能会误选unless,引导条件状语从句,但析语境可知,该空表"直到",强调时间的延续,应用until引导时间状语从句。 本题着重考查unless和until的用法区别,其用法区别是高考热点考点。本文拟谈一谈unless和until的用法区别。 一、作为从属连词含义不同,引导从句性质不同 unless与until均为从属连词,unless表"除非",强调条件,引导条件状语从句;until表"直到",强调时间的延续,引导时间状语从句。 1. I didn't know the news until my teacher told it to me. 2. I couldn't know the news unless my teacher told it to me. 3.-Was his father very strict with him when he was at school? -Y es. He had never praised him until he became one of the top students in his grade. 析:句1动词didn't know表明该句强调时间的延续,表"我不知道这消息"的状态一直延续到"老师告诉我",因此应用until引导时间状语从句。句2动词couldn't know表明该句强调条件,表"我不可能知道这消息,除非老师告诉我",因此应用unless引导条件状语从句。句3表明"他爸爸从来没有表扬他"的状态一直延续到"他变成年级最好的学生之一",因此也应用until引导时间状语从句。 二、作为从属连词引导的从句常用一般现在时表示将来 unless引导的条件状语从句和until引导的时间状语从句常用一般现在时表示将来。 例1:除非邀请你否则别进来。 误:Don't come in unless you will be invited to. 正:Don't come in unless you're invited to. 例2:除非他来,我们不可能去。 误:Unless he will come, we won't be able to go. 正:Unless he comes, we won't be able to go. 三、作为从属连词引导的状语从句可转换为省略式创新句型 unless引导条件状语从句和until引导时间状语从句时,如果主从句主语一致(或主从句主语不一致,但从句主语为it),从句谓语部分含有be,可将从句主语和动词be省略,构成省略式创新句型。 例1:I won't come to see you unless I am asked to. 除非你邀请我,我才会来看你。 析:因为主从句主语一致,从句谓语又含有am,所以可将从句主语I和动词am 省略,构成省略式创新句型:I won't come to see you unless asked to.
unless的用法 unless是从属连词，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。所以unless = if not。注意：unless引导的条件状语从句和if条件状语从句，与其它时间状语从句一样，用一般现在时代替将来时。 Unless: conj. 除非, 如果不 Unless you take more care, you’ll have an accident. 如果不多加小心的话，你会出事故的。 My baby sister never cries unless she is hungry. 我那刚出生的妹妹除非饿了，否则她是从来不哭的。 Don’t promise anything unless you’re 100 per cent sure. 不要作任何的许诺, 除非你有百分百的把握。 Unless bad weather stops me, I run every day. 除非坏天气作梗，每天我都跑步。 木头容易燃烧，除非是水湿了。 We'll be late unless we speed up. 我们要不加快些，就会迟到了。 You'll fail in English unless you work hard. 除非你努力学习，否则你英语将不及格。 You'll miss the bus unless you walk more quickly. 除非你走快一点，否则将赶不上公共汽车。 You won't hear anything unless you roll the tape ahead. 除非你把录音带往前转，否则你是不会听到任何东西的 You will never pass the exam unless you study harder. 除非你加紧学习，否则考试永远过不了关。 更详细的如下 一、unless的基本用法 连词unless意为“除非……如果不……”，“除了……”，多引导一个否定意义的真实条件句，有时也可引导非真实条件旬。unless引导条件句时，主要用于下列情况。 (1)主句为肯定句。如： Unless I visit every bookstore in town．I shall not know whether I can get what l want．如果我不到城里每一家书店去看看，我就不知道是否能买到我想要的书。 You will miss the bus unless you hurry up．你要不快点就会错过班车。 You’ll fail in chemistry again unless you work harder．如果你不再加把劲，你化学考试还会不及格。 (2)主句为否定句。如： Unless you oil the motor regularly．it won’t run smoothly．要不是你经常给发动机上油。它就不会转得那么顺畅。 I wouldn't be saying this unless I were sure of the facts．要是我对这些事情没有把握，我就不说这话了。 You will never get anywhere unless you have set your goal．如果你不设定目标，你哪儿也去不了。 二、应注意的一些问题 1．unless不能与if'"not换用的情况 unless在意义上相当于if...not，因此在有些场合中unless与if...not可互换使用。
Chapter 1 语法 If 和unless 引导的条件状语从句 我们用if 引导的条件状语从句来讨论可能的条件以及该条件成立时可能的结果。一. 学 习if 引导的条件状语从句的用法，我们可先从如下的口诀入手：If条件句不一般，几个要点记心间； 条件句，放在前，逗号要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。 We can walk there if we can't find a bus. 如果我们找不到公车，也能走路去那里主句条件状语从句 If it rains tomorrow, we will not go to the zoo. 如果明天下雨，我们就不去动物园条件状语从句主句 What will you go if you find someone in danger? 主句条件状语从句如果你发现某人有危险，你会怎么做？ If 条件句有不同的类型，简述如下： 1.用if条件句表达客观真理或普通现象 If 条件句用于表达客观真理或普通现象时，主，从句时态均用一般现在时，如： Eg. If you freeze water, it turns into ice. A fish dies if you take it out of water. 2.用if 条件句表示将来可能发生的事情 在表示将来可能发生的事情的if 条件句中，主句用一般将来时，而if 从句用一般现在时表示将来的时间，即主将从现 Eg. If I like the house, I will buy it. 如果我喜欢这房子，我就会把它买下 I will tell her if I see her. 如果我见到她，我就会告诉她。 主句中的will 也可以用情态动词can, may 或might 等代替。如： Eg. If they are friendly，I might invite them to the party. 如果他们很友善，我可能会请他们去参加聚会 If we hurry now, we can stop for coffee later. 如果我们现在抓紧时间，就可以稍后去喝咖啡
中考重点连词用法练习 【安徽省】8. My father was pr eparing for his speech __ my mother was doing some washing last night. A. if B. while C. unless D. until 【河北省】11. They will lose the game they try their best, A. unless B. once C. since D. after 【山东淄博】22. —Will you play basketball against Class 3 tomorrow? —Yes. ________ it snows. A. If B. Until C. When D. Unless 【?河南省】12. You won't feel happy at school ______ you get on well with your classmates. A. though B. when C. unless D. because 【四川绵阳】33. Making friends is not easy. Sometimes it can take years you become true friends with someone. A. before B. after C. because D. Unless 【湖南岳阳】41.-May I go to the movies with you ? -I’m afraid not you have a ticket, because I have only one. A. if B. unless C. though 【辽宁本溪】51. Your dream will come true ______ you give it up halfway. A. if B. unless C. although D. because 【广西贵港】47.—Tom, you look tired this morning. What’s wrong? —I was so busy that I didn’t go to bed _____ 12 o’clock last night. A. until B. when C. though D. unless 【山东菏泽】57. We can easily become unhappy_____ we work out our problems in our daily life. A. after B. if C. until D. unless 【山东枣庄】58. I won’t pass the exam ______I work hard.. A. whenever B. because C. if D. unless 【浙江杭州】62. I really enjoyed your lecture,_______ there were some parts I didn’t quite understand. A. because B. unless C. though D. After 【山东临沂】73. Don’t forget to wash your hands _________ you have meals. A. before B. until C. though D. unless 【?山东青岛】80. You will achieve nothing _________ you work hard. A. if B. unless C. when D. that 【浙江衢州】83. You may easily lose your way in Shanghai____ you don’t have a map or a guide. A. until B. unless C. though D. if 【山东烟台】84. __ you have tried it on, you can’t imagine how pretty the new style skirt is. A. Because B. Although C. Unless D. When 【安徽芜湖】98. —Do you like sports? —Yes, I do some running in the park everyday _______ the weather is terrible. A. if B. after C. unless D. while 【山东济宁】25.I won't take part in Julie's birthday party ________I am invited. A.unless B.after C.because D.if 【湖北宜昌】34. —Where are you going for the coming winter camp? —I won’t decide on the place ——the end of this month. A. until B. unless C. though D. through 【江苏无锡】10. The old theatre will close soon some extra donations are made. A. so B. if C. because D. unless 【江苏盐城】5. You will fall behind others you work hard. A. if B. unless C. though D. since
unless的用法 unless就是从属连词,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。所以unless = if not。注意:unless引导的条件状语从句与if条件状语从句,与其它时间状语从句一样,用一般现在时代替将来时。 Unless: conj、除非, 如果不 Unless you take more care, you’ll have an accident、 如果不多加小心的话,您会出事故的。 My baby sister never cries unless she is hungry、 我那刚出生的妹妹除非饿了,否则她就是从来不哭的。 Don’t promise anything unless you’re 100 per cent sure、 不要作任何的许诺, 除非您有百分百的把握。 Unless bad weather stops me, I run every day、 除非坏天气作梗,每天我都跑步。 木头容易燃烧,除非就是水湿了。 We'll be late unless we speed up、 我们要不加快些,就会迟到了。 You'll fail in English unless you work hard、 除非您努力学习,否则您英语将不及格。 You'll miss the bus unless you walk more quickly、 除非您走快一点,否则将赶不上公共汽车。 You won't hear anything unless you roll the tape ahead、 除非您把录音带往前转,否则您就是不会听到任何东西的 You will never pass the exam unless you study harder、 除非您加紧学习,否则考试永远过不了关。 更详细的如下 一、unless的基本用法 连词unless意为“除非……如果不……”,“除了……”,多引导一个否定意义的真实条件句,有时也可引导非真实条件旬。unless引导条件句时,主要用于下列情况。 (1)主句为肯定句。如: Unless I visit every bookstore in town.I shall not know whether I can get what l want.如果我不到城里每一家书店去瞧瞧,我就不知道就是否能买到我想要的书。 You will miss the bus unless you hurry up.您要不快点就会错过班车。 You’ll fail in chemistry again unless you work harder.如果您不再加把劲,您化学考试还 会不及格。 (2)主句为否定句。如: Unless you oil the motor regularly.it won’t run smoothly.要不就是您经常给发动机上油。它就不会转得那么顺畅。 I wouldn't be saying this unless I were sure of the facts.要就是我对这些事情没有把握,我就不说这话了。 You will never get anywhere unless you have set your goal.如果您不设定目标,您哪儿也去不了。 二、应注意的一些问题 1.unless不能与if'"not换用的情况 unless在意义上相当于if、、、not,因此在有些场合中unless与if、、、not可互换使用。
unless的基本用法 连词unless意为“除非……如果不……”，“除了……”，多引导一个否定意义的真实条件句，有时也可引导非真实条件旬。unless引导条件句时，主要用于下列情况。 (1)主句为肯定句。如： Unless I visit every bookstore in town．I shall not know whether I can get what l want．如果我不到 城里每一家书店去看看，我就不知道是否能买到我想要的书。 You will miss the bus unless you hurry up．你要不快点就会错过班车。 You’ll fail in chemistry again unless you work harder．如果你不再加把劲，你化学考试还会不及格。 (2)主句为否定句。如： Unless you oil the motor regularly．it won’t run smoothly．要不是你经常给发动机上油。它就不 会转得那么顺畅。 I wouldn't be saying this unless I were sure of the facts．要是我对这些事情没有把握，我就不说这 话了。 You will never get anywhere unless you have set your goal．如果你不设定目标，你哪儿也去不了。 二、应注意的一些问题 1．unless不能与if'"not换用的情况 unless在意义上相当于if...not，因此在有些场合中unless与if...not可互换使用。 如： Unless I am mistaken．I’ve seen that man before．=lf I am not mistaken。I’ve seen that man before．如果我没搞错，我以前见过那个人。 Unless the strike has been called off，there will be no trains tomorrow．=lf the strike has not been called off。there will be no trains tomorrow．除非罢工结束了，明天才会有火车。 但在有些情况下，二者不可互换使用。如： (1)当unless引导非真实条件句时，一般不可改用if...not。如： They couldn’t afford to live in such an expensive apartment unless they were rich．除非他们很富有，否则就住不起这么昂贵的公寓。