unless的用法及短语 Unless的用法总结
Unless 的用法
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语法学习:Unless 的用法
Unless 的用法
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
(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.
【unless的用法及短语 Unless的用法总结】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 。
小词不简单 unless口语用法指南
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 。
If you don’t study, you will fail your exam./ Unless you study, you will fail.
如果你不学习,你考试就过不了 。/除非你学习 , 否则你就过不了考试 。
We could eat at Frankie and Benny’s if they’re not closed on a Monday/ We could eat at Frankie and Benny’s unless they are closed on a Monday.
如果弗兰基&班尼餐馆周一不关门,我们可以在那吃饭 。/除非弗兰基&班尼餐馆周一关门,否则我们就在那吃饭 。
I’ll make dinner if nobody wants to/ I’ll make dinner unless someone else wants to.
如果没人想做饭的话 , 我做吧 。/除非没别人想做饭,那么我就来做吧 。
If you don’t stop smoking, you will feel bad/ Unless you stop smoking, you will feel bad
如果你不戒烟 , 你会不舒服的 。/除非你戒烟,不然你会感觉不舒服 。
Note that the sentence after unless is always a positive sentence. You cannot have a negative sentence after unless because that would make the sentence a double negative and senseless.
注意:unless之后的句子总是肯定的 。在unless之后不能接否定句,因为这就造成了双重否定 , 句子没有意义 。
Example: Unless you don’t study, you will fail. (????)
例句:除非你不学习 , 否则你就会失败 。(小编注:即使是此句的中文译文也是一个有语义问题的病句,双重否定后使句子无逻辑意义了,符合逻辑的句子应该是“除非你学习,否则你就会失败 。”)
..arning: Typical Error
警告:典型错误
We don’t use “unless” when we mean if.
表示“如果”的时候不用unless 。
Example: If you feel ill, I can drive/ Unless you feel ill, I can drive
例句:如果你觉得不舒服,我来开车吧 。/除非你觉得不舒服,否则我来开车吧 。
Spoken English
口语
When speaking, we use unless to introduce an extra thought or piece of information:
说话的时候,我们用unless表达一些额外的思考或者是信息:
He didn’t even know about the crash – unless he’d heard about it on the radio.
他都不知道那场空难—除非他在广播上听说了 。
A: Oh look. Neil next door’s got a new car.
A:看!尼尔的邻居有了辆新车!
B: Unless they’ve got a visitor.
B:除非他们来客人了 。
HOW ABOUT “NOT UNLESS”?
not unless的用法呢?
Not unless is similar to only if
not unless和only if相似
Example:
例句:
Shall I tell Liz what happened? Not unless she asks you (= only if she asks you)
我需要告诉利兹发生的事吗?除非她问起来 。
Will you come shop**** with me? Not unless you offer me lunch (= only if you offer me lunch)
你和我一起去逛街吗?除非你给我提供午餐 。
unless 与 if ... not 的用法区别(知其然,知其所以然)
两者都可表示否定的条件,有时可换用 。如:
Come tomorrow unless I phone [if I don’t phone]. 要是我没有打电话 , 明天就来 。
You won’t catch the train unless you hurry [if you don’t hurry]. 你要是不赶快 , 你就赶不上火车了 。
但是在下列情况下,通常要用 if ... not 而不用 unless:
1. 当所述条件要引出一种新的想法或情况时 。如:
I’ll be angry if I’m not invited to the party. 如果不邀请我参加晚会,我会生气的 。
I will be surprised if he doesn’t have an accident. 他要是不出事 , 我倒感到奇怪了 。
2. 当要引出一个表示假想的条件句时 。如:
If he weren’t so silly, he would understand. 他要不是那样傻的话,他就会明白了 。
If I hadn’t stopped her, she would have jumped down. 要不是我阻止了她 , 她就跳下去了 。
注:
偶尔可见到 unless 用于假想条件句 , 但有不少语法家反对这一用法 , 建议学生不要模仿 。顺便说一句 , unless 有时用于引出一个补充前言的话,此时若谈论的是过去的情况,注意不要与表示想象的条件句相混淆 。如:
I couldn’t have got to the meeting on time — unless I had caught an earlier train. 我不可能及时赶到会?。俏腋仙狭私显绲囊话嗷鸪?。
若将上句中的 unless 换为 if ... not,则意思有很大差别:
I couldn’t have got to the meeting on time if I had not caught an earlier train. 要是我没有赶上早一班火车,我就不可能及时到会了 。
【英语角】小词不简单,unless用法大全
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.
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.
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 。
If you don't study, you will fail your exam.
如果你不学习,你考试就过不了 。
Unless you study, you will fail.
除非你学习,否则你就过不了考试 。
We could eat at Frankie and Benny's if they're not closed on a Monday.
如果弗兰基和班尼餐馆周一不关门 , 我们可以在那吃饭 。
We could eat at Frankie and Benny's unless they are closed on a Monday.
除非弗兰基和班尼餐馆周一关门,否则我们就在那吃饭 。
I'll make dinner if nobody wants to.
如果没人想做饭的话,我做吧 。
I'll make dinner unless someone else wants to.
除非没别人想做饭,那么我就来做吧 。
If you don't stop smoking, you will feel bad.
如果你不戒烟,你会不舒服的 。
Unless you stop smoking, you will feel bad.
除非你戒烟,不然你会感觉不舒服 。
Note that the sentence after unless is always a positive sentence. You cannot have a negative sentence after unless because that would make the sentence a double negative and senseless.
注意:unless之后的句子总是肯定的 。在unless之后不能接否定句,因为这就造成了双重否定,句子没有意义 。
Example: Unless you don't study, you will fail. (????)
例句:除非你不学习,否则你就会失败 。
(小编注:即使是此句的中文译文也是一个有语义问题的病句,双重否定后使句子无逻辑意义了,符合逻辑的句子应该是“除非你学习,否则你就会失败 。”)
Warning: Typical Error
警告:典型错误
We don't use "unless" when we mean if.
表示“如果”的时候不用unless 。
Example: If you feel ill, I can drive.
如果你觉得不舒服,我来开车吧 。
Unless you feel ill, I can drive.
除非你觉得不舒服,否则我来开车吧 。
Spoken English
口语
When speaking, we use unless to introduce an extra thought or piece of information:
说话的时候,我们用unless表达一些额外的思考或者是信息:
He didn't even know about the crash – unless he'd heard about it on the radio.
他都不知道那场空难—除非他在广播上听说了 。
A: Oh look. Neil next door's got a new car.
A:看!尼尔的邻居有了辆新车!
B: Unless they've got a visitor.
B:除非他们来客人了 。
HOW ABOUT “NOT UNLESS”?
not unless的用法呢?
Not unless is similar to only if
not unless和only if相似
Example:
例句:
Shall I tell Liz what happened? Not unless she asks you (= only if she asks you)
我需要告诉利兹发生的事吗?除非她问起来 。
Will you come shop**** with me? Not unless you offer me lunch (= only if you offer me lunch)
你和我一起去逛街吗?除非你给我提供午餐 。
Unless 的用法总结
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