unless的用法归纳总结(unless用法及举例)

if和unless的区别和用法if是不是有

less是little的比较级 既可以做形容词也可以做副词 意思是“较少的”或“更少”

if和unless的区别：If Joe’s wife won’t go to the party, _________. (全国II)unless=if not；

unless的用法归纳总结(unless用法及举例)

unless的用法归纳总结(unless用法及举例)

做连词

Come tomorrow if I don't phone/unless I phone.

如果我不打电话，我明天过来。

如果工资不是太低，我将从事这份工作。

在下面几种情况下，unless和if not不能随便换用。

I‘ll come back tomorrow if there's not a plane strike.(OR...unless there's a plane strike.)要不是飞机出故障了，我明天就打算回来。

Let's he dinner out-if you're not too tired.(OR...unless you're too tired.)如果你不是太累的话，我们出去吃饭吧。

（2）如果表示“A事物发生是因为B事物没有发生”，我们一般只能用if not.

I'll be glad if she doesn't come this ing.(NOT I'll be glad unless she comes this ing.)

如果她今天晚上没有来，我会非常高兴。

She'd be pretty if she didn't wear so much make-up.(NOT...unless she wore so much make up.)

如果她没有化如此浓的妆，她会更漂亮。

if和unless的区别：unless=if not；

unless与if…not的区别：虽然unless与if…not的意思一样，但unless只能用于真实条件句，而if…not除了可用于真实条件句之外，还可用于非真实条件句。意思不一样。个.因为它的是非真实条件分句.他没出车祸我才惊讶,但这里表示只是猜测.他还没出车祸.换成unless就变成他已经出车祸了.因为使用unless说明飞机失事已经发生了.是事实.

新概念英语第二册语法总结：状语从句（下）

A Unless是除非不，简单的方法是用if...not替换。如： Unless it rains I will go= If it doesn't rain I will go. 同理，题目 Unless I was very much mistaken, there was soming wrong with Louise. = If I was not very much mistaken, there was soming wrong with Louise. 意思可大致翻译为，如果我没弄错，斯有点不对劲儿。 Though是表转折，相当于汉语尽管。。。（仍然）。。。。强调后半句。如果将上面的例句换成是though, Though it is raining I will go. 意思就成为：即使现在在下雨我也要去。 问题这句话就成了：尽管我弄错了，斯有点不对劲儿。讲不通 ======================================================= “做个好人”，你好！对你的评论我对我的看法做点补充。 我认为，一个句子的对错要从语法和语义同时考虑。填though语法上没有问题，但逻辑上有一定的问题。可以参考汉语句子“尽管我知道我是错的，但我仍坚持我的看法”。“尽管“多表现的是明知不可为而为之，坚持或从情感上坚持原来的做法。再如“尽管下雨，可我还是要出去”。题中此句如果填though，我个人看法这样说比较合理 though I was very much mistaken, I still felt there was soming wrong with Louise. 如果要表达“是我弄错了，斯确实有问题”的意思，大可不必用though,如 But I was very much mistaken. There was soming wrong with Louise. 你看呢？ 我个人多年的英语学习经验和考试经验来说： 1。学英语作重要的是表达，就是语义的合情合理。语法是达到这一目的的手段。语确不一定代表句子是正确的。好比“太阳从西边升起”这句话从语法上讲没有问题，但没有人认为这是一句正确的话。所以在做类似的选择题时，要从语法和语义两方面考虑。 2。单向选择其实是的选择。这意味着可能有两个甚至三个说得通，但要选出的。 3。考试无非是要让我们掌握正确地用法。比如这道题，考的是unless和though地用法。unless是学生学习上的一个弱点，因为的联结词中没有这种用法，初学都觉得别扭，总觉得有点怪怪的，句子好像读不通顺。这是受母语的影响。其实通过这道题弄清两个词的用法就可以了，不用太在一道题上较真。否则就是舍本求末了。

1.unless从句的谓语只能用肯定式。unless和if…not同义，unless是书面语，if…not是口语，通常二者可以换用。

条件状语从句中的谓语二，宾语从句，“是否”的意思，如：动词的时态一般要用现在时或过去时代替一般将来时或过去将来时。从属连词为if, unless, as/so long as, in case, so far as。

Difficulties are nothing if we are not afraid of them.

如果我们不怕困难，困难就算不了什么了。

We shall go there tomorrow unless it rains.

除非下雨，我们明天就去那里。

只要你努力工作，你就一定能成功。

In case I forget, please remind me about it .

万一我忘了，请提醒我一下。

据我所知，那本书下月出版。

七、方式状语从句

1.此处as译为，按照或正如

as if或as though的意义和用法基本一样。从句中可以用现在时表示可能符合事实，也可以用虚拟语气。

Draw a cat as I taught you .

按照我教你的画一只猫。

Do as you are told.

按照人家告诉你做的去做。

She looks as if she is ill.

看上去她好象是生病了。

他的行动就好象什么也没有发生。

They treat the black boy as if (though) he were an animal.

他们对待这黑孩子仿佛他是一头牲口。

1.在句子中一般用了“虽然”就不能再用“但是”(but)但可以与yet或still连用。though / although意义相同，用法基本一样，前者通俗，口语化，后者正式多放主句的前面。

Although (Though) he was over sixty, (yet) he began to learn French.

虽然他六十多岁了，但仍开始学习法语 .

We were not tired though (although) we had worked all day.

虽然我们干了一天活，但并不累。

2.n if 和n though的意思为“即使”“纵使”有退一步设想的意味，多用于书面语中。

I’ll go n if (though) it rains tomorrow.

即使明天下雨，我也要去。

3.as引出的状语从句多用于书面语，它比用though或although的从句，语气强，更有表现力，从句常放在句首，语序部分倒装。

Child as he is , he knows a lot.

虽然他是一个孩子，但他懂得很多。

Cold as it is, (=Though it is cold,) the children play outdoors.

虽然天气冷，但孩子们仍在户外玩。

4.no matter...与 who-r的让步状语从句意义基本一 样，no matter...的从句可是以位于主句前或主句后。

Do it no matter what others say.

不管别人怎么说，尽管干。

No matter how busy he was, he studied English ry day.

不管他多忙，他都每天坚持学习英语。

No matter who takes up the matter for me, I shall be very grateful.

不管谁为我处理这件事，我都将非常感激。

5.wh-r(whatr whor whenr whichr howr)从句中的动词有时可以和may连用。判断wh-r的是状语从句还是名词性从句的一点是，名词性从句，主句中一定有一个成分要在从句担任，一般从句与主句之间没有逗号。不可将no matter与wh-r连用。

I'll try to give whatr you want.（名词性从句）

我会尽量满足你的所需。

Whatr happens / may happen, we shall not lose heart.（状语从句）

无论发生什么，我们都不要失去信心。

Whor comes, he will be welcome.（状语从句）

无论谁来，都会受到欢迎。

九、比较状语从句

1.连词表示同程度级的比较，肯定句用as…as否定句可用not as…as 或not so…as，从属连词有as…as, not so/as…as, the same…as, such…as。

Mary is as old as my sister.

玛利和我姐姐一样大。

He doesn’t run so (as) fast as Jack (当否定副词nr置于句首时，其后习惯上要用倒装语序(与一般疑问句形式相同)。如：(分别为BA)does).

他不如杰克跑得那样快。

His book is the same as mine.

他的书和我的一样。

Henry is not such a good worker as Peter .

享利这个工人不如彼得那样好。

2.表示不同程度之比较，主句中用比较级的形容词或副词。从属连词为than。

She has made greater progress this year than she did last year.

她今年比去年进步更大。

He bought fewer books than I (did).

他买的书比我买的少。

3.the more…the more 意思为越……越……，通常的语序为从句在前主句在后，这两个the都是表示程度的副词，用在比较级的形容词或副词前面。

句子意思明显，句子的主语和动词都可省略。

The more yoead, the better you understand.

你看的书越多，你懂得的就越多。

The more tickets you sell, the more money you will get.

你卖的票越多，你的收入也越多。

The harder you work, the greater progress you will make.

你工作越努力，你取得的进步就越大。

越快越好。

越暖和越好。

【专项训练】

1、You like sports ______ I’d like to read.

A．when B．while C．but D．yet

2、______ we were singing, the teacher came in.

A．Before B．after C．As D．Until

3、I was about to lee my house ______ the phone rang.

A．while B． when C．as D．after

4、They did not stop fighting ______ there was no enemy left.

A．until B．after C．when D．since

5、I he not seen him ______ he went to college.

A．when B．before C．as D．since

6、It is five days ______ we came here.

A．when B．before C．as D．since

7、It was not long ______ he got to know it.

A．when B．before C．after D．until

8、We shall go ______ we are free.

9、______ I live I must serve the people heart and soul.

A．When B．So long as C．As soon as D．On condition

10、I was reading a novel ______ he was watchingTV.

A．when B．while C．before D．as

（后设，大家不要偷看(⊙o⊙)哦，(^__^) 嘻嘻……）

Keys

1、B 2、C 3、B 4、A 5、D 6、D 7、B 8、A 9、B 10、B

If条件状语从句,unless条件状语从句以及比较级和的用法和注意事项

He acted as if (though) nothing had happened.

If 和unless的条件状语从句

当否定副词hardly, scarcely等置于句首时，其后习惯上要用倒装语序(与一般疑问句形式相同) 。如：(为A)

1.用if条件句表达客观真理或普通现象 主现从现 If you drop a glass,it breaks

A．whenr B．whatr C．wherr D．howr

2.用if 条件句表示将来可能发生的事情 主将从现 If it rains tomorrow,we will not go to the zoo

一.if的条件状语从句中的主句和从句.

二.If 条件句类型

1.用if条件句表达客观真理或普通现象,主从句时态均用一般现在时.即主现从现

2.用if 条件句表示将来可能发生的事情,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

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 三． Unless 的条件句（unless = if not）“除非,否则”

比较级和的用法和注意事项

（用法和注意事项我放在前面了,我想那些变形你应该知道,在下面,你要看的话拉下去看.）

形容词的比较级和:形容词的比较级和形式是在形容词的原级形式的基础上变化的.分为规则变化和不规则变化.

形容词比较级的用法:

形容词的比较级用于两个人或事物的比较,其结构形式如下:

主语+谓语(系动词)+ 形容词比较级+than+ 对比成分.也就是,含有形容词比较级的主句+than+从句.注意从句常常省去意义上和主句相同的部分,而只剩下对比的成分.

形容词的用法:

形容词用于两个以上的人和物进行比较,其结构形式为:

主语+谓语(系动词)+the+形容词+名词+表围的短语或从句.

（the 很重要!）

规则变化如下:

1) 单音节形容词的比较级和形式是在词尾加 -er 和 -est 构成.

great (原级) greater(比较级) greatest()

2) 以 -e 结尾的单音节形容词的比较级和是在词尾加 -r 和 -st 构成.

wide (原级) wider (比较级) widest ()

3)少数以-y,-er,-ow,-ble结尾的双音节形容词的比较级和是在词尾加 -er 和 -est 构成.

clr(原级) clrer(比较级) clrest()

4) 以 -y 结尾,但 -y 前是辅音字母的形容词的比较级和是把 -y 去掉,加上 -ier 和-est 构成.

happy (原形) happier (比较级) happiest ()

5) 以一个辅音字母结尾其前面的元音字母发短元音的形容词的比较级和是双写该辅音字母然后再加 -er和-est.

big (原级) bigger (比较级) biggest ()

6) 双音节和多音节形容词的比较级和需用more 和 most 加在形容词前面来构成.

beautiful (原级)?difficult (原级)

more beautiful (比较级) more difficult (比较级)

most beautiful () most difficult ()

常用的不规则变化的形容词的比较级和:

原级 比较级

good better best

many more most

much more most

little less least

ill worse worst

far farther(further) farthest(furthest)

形容词前如加 less 和 lest 则表示"较不"和"最不"

important 重要

less important 较不重要

lest important 最不重要

less和unless

Mercury’s velocity is so much greater than the Earth’s that it completes more than four revolutions around the Sun in the time it takes the Earth to complete one.

应该没有任何关联的两个单词吧。

比如：

The company has less money and fewer staff than last year.

Let's speak less and listen more.

unless是连词，意思是“除非”，可以用not...注意：指物时，whose+名词=the+名词+of which或 of which+the+名词if来eg：Do it just this once .就做这一次。替换 比如：

You will fail unless you work hard.(除非你努力工作，不然你会失败的)

=You won't fail if you work hard.

总之这两个单词除了拼写类似，应该没什么关系。

unless和until的区别是什么？

So far as I know, the book will be published next month.

一、意思不同：

朗文当代英语词典（Longman Dictionary of Contemporary English, LDOCE）的until词条有一处用法提示：Use "unless" to say that soming will happen or be true if soming else does not happen or is not true : Unless they get protection, they will not testify.除非他们得到保护，否则他们不会（出庭）作证。

也即，unless适用于根据一定设，对未来发生或不发生的事情进行判断判断判断，而“离间”、“不离间”，虽然跟有没有完成考试有关联，但这并不是需要判断的事情。换句话说，难道最终还会有学生“不离间”吗？每个学生都会离间的，这毫无疑问。

二、作为从属连词的从句常用一般现在时表示将来不同

unless的条件状语从句和until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The warmer, the better.为从属连词的状语从句可转换为省略式创新句型不同

unless条件状语从句和until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eg：She was oce my best friend. 她曾是我的朋友。，我才会来看你。

解析：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.

例2：The soldiers will not cross the river unless they are ordered to.除非接到命令，战士们不会过河。

解析：因为主从句主语一致，从句谓语又含有are，所以可将从句主语they和动词are省略，构成省略式创新句型：The soldiers will not cross the river unless ordered to.

注意：

until也可作为介词。例如：

状语从句英语专四语法辅导总结

如果要选unless 句子应该是you are not permitted to he access to this tour zone unless you he an operator's lnse你是不能进去这个地带的，除非你有作员执照

状语从句英语专四语法辅导总结

翻译是很重要的，

复 合句——副词性(状语)从句

副词在句中起状语作用，故如果起状语作用的部分为一个句子，那么该句便是副词性从句，也称状语从句。状语从句可细分为：时间、地点、条件、原因、让步、目的、结果、比较、方式等。

状语从句的测试重点为：考查考生对主从句之间逻辑意义关系的把握，看其是否能选择正确的从属连词。

1.条件状语从句的常考知识点

(1)if与unless的用法。 if和unless都是条件状语从句的连词，考生应尤其注意unless的用法，因为它表示反面条件，相当于if not“如果不”、“除非”。如：In debating, one must correct the opponent’s facts, deny the relevance of his proof, or deny that what he presents as proof, if relevant, is sufficient.

(2)复合连词as long as，so long as，as far as，on condition that，in the nt that；动词及分词provided(that)，providing(that)，given that, supe/suping(that)，assuming，say等条件状语从句。如：

You can arrive in Beijing earlier for the meeting provided you don’t mind taking the night train.

Assuming he is dit in his studies at ordinary times, he is sure to pass the test.

In the nt that she has not been rmed, I will l her. (如果……)

You can go swimming on condition that you don’t go too far from the river bank. (如果……)

Supe it rained, we would still go. (如……)?Say it were true, what would you do about it??(如……)

(3)祈使句表示条件。如：Dress warmly, or else you’ll catch cold.

Talk to anyone in the drug industry, and you’ll soon discover that the science of genetics is the biggest thing to hit drug research since peni7、表示“一......就......”的句型cillin was discovered.

2.让步状语从句的常考知识点

(1)as 让步从句，要求用倒装结构，把强调的`部分置于句首。如： Much as he likes her, he does get irritated with her sometimes.

Humble as it may be, there is no place like home.

(2)while让步从句。如:

Everybody cheats a little, some psychologists say, while others insist that most people are basically honest and some wouldn’t cheat under any circumstances.

(3)复合连接词for all that和分词granting/granted(that)让步从句。如:

Granted you he made much progress, you should not be conceited.

3.时间状语从句的常考知识点

(1)before表示汉语的 “只有/必须……才能”。如:?New ideas sometimes he to wait for years before they are fully accepted.

(2)when时间从句时，如果出现在后半句，则表示“这/那时突然”。如：

I he just started back for the house to change my clothes when I heard the vos.

Doing your homework is a sure way to improve your test scores, and this is especially true when it comes to classroom tests.

(4)名词短语、介词短语each /ry time, the moment/second/minute, in the time, by the time起连词作用。如:

I hope her health will he improved greatly by the time we come back next year.

My pain must he been apparent the moment I walked into the room, for the first man I met asked sympathetically: “Are you feeling all right?”

(5)副词directly, immediay, instantly, now时间从句, 相当于as soon as。如:

The polmen went into action directly they heard the alarm.

4.原因状语从句的常考知识点

(1)in that原因从句时,有时翻译成“是因为”、“就在于”。如:

Aertising is distinguished from other forms of communication in that the aertiser pays for the message to be delivered.

Critici and self-critici is necessary in that it s us to find and correct our mistakes.

(2)now that表示 “既然” ; seeing that, considering表示“鉴于”、“考虑到”。如:

Now that we he all the material ready, we should begin the new task at once.

He did poorly in the examinations, considering how hard he had tried for them.

Seeing that she is lawfully old enough to get married, I don’t think you can stop her.

其他原因状语从句的连接词语还有: for the () reason that, by reason that, on the grounds that, in as much as, in so far as等。

5.while, whereas 对比从句

如: While the age population in the United States has declined over the past decade, violent crimes committed by juveniles he sharply increased.

A baby might show fear of an unfamiliar , whereas he is likely to ile and reach out to another infant.

6.so…that…, with the result that, so much so that 结果状语从句

如: Over the years, a large number of overseas students he studied at that university with the result that it has acquired substantial experience in dealing with them.

He himself belid in , so much so that he would rather die than live without it.

7.in order that, in case, for fear that, lest (用虚拟语气) 目的状语从句

如: Give me your ephone number, in case I need your .

Helen listened carefully in order that she might discover exactly what John wanted.

8.where作为连接副词的一种用法, 翻译为“在……地方”

;

unless if once用法的区别

如: In Japan, a person’s capabilities are not forced into an inflexible specialty. Where there is willingness and ince, there is a place within the company to try and to succeed.

首先意思上就不同 unless 除非 if 如果 once 一旦

（1）当句子表示“B事物如果不停止，A事物将会发生”，我们可以用if not或者unless.

unless

1、 if not 除非

we won't get there on time unless we lee earlier.

除非我们早点离开，否则不能准时到。

2、except when 除...之外，除...的情况之外

The directors he a meeting ry Friday, unless there is nothing to discuss.

主任们每星期五开会，除了没事讨论以外。

if 的虚拟用法

if的虚拟条件句中如果有should,were,had时，可以把should,were,had提前，if省略，句子倒装。

拟语气在as if/as though、n if/n though等的表语从句或状语从句中，

指现在状况，则用一般过去时；

指将来状况则用(3)when it comes to 是习惯用法，意为“当谈到……时”。如：过去将来时。

指现在状况，则用一般过去时；

指将来状况则用过去将来时。

如：He did it as if he were an expert.

Even if she were here, she could not solve the problem

if

连接词 conj.

1.(表示条件)如果

He will come if you invite him.

如果你请他,他会来的。

2.(表示虚拟)如,要是

If I were you, I would nr do that.

如果我是你,我决不做那件事。

3.(表示让步)即使

We'll go n if it rains.

即使下雨我们也要去。

4.是否

I wonder if she is ill.

不知她是否病了。

5.(表示因果关系)每一次...的时候(总是会)

If I feel any doubt, I inquire.

我一感到有疑问就随时询问。

名词 n.

1.条件;设想[C]

There are too many ifs in his offer.

他的提议中条件太多了。

IF=i.f.

if.

缩写词 abbr.

1.=rmation feedback 信息回馈

2.=interferon

3.=intermediate frequency 中频

i.f.

缩写词 abbr.

1.=intermediate frequency 中频

if从句的用法：

一，条件状语从句，“如果，设”的意思，

If you don't go there, I won't, either.如果你不去，我也不去。

He asked if I could him他问我是否帮下他。

once：

做副词

1.一次，一回。

eg：I saw him once and nr again. 我见过他一回，以后再也没见到过。

Once a week ,she wrote to her mother. 她一星期一次给她妈妈写信。

2：曾经，一度

3：用于条件句、否定句等，一旦

eg：If you once forget it,you won't come up with it again.你一旦忘记它，就不会再想起来。

4：用于否定句，一次也，完全

eg：I hen't seen him here once.我自爱这里一次也没见到过他。

I couldn't once get his meaning.我完全不能理解他的意思。

5：乘以1

eg：Once eight is eight. 一乘八得八。

6：亲属关系上隔一代

eg：a cousin once removed 同（外）曾祖的堂（或表）兄弟（姐妹）

做名词

一旦......就......

你一旦考过，就可以轻松了。

做形容词

从前的，一度的

eg：the once capital of the nation 那个的旧都。

英语问题

一次，一回

unless是除非 without是没有。所以翻译下来unless的意思是伱不能进入这个tour zone除非一个工作证.（这样根本不通对吧） 但是如果用without的话意思就变成,没有工作证伱不能进入这个tour zone（顺多了吧!）

这句话的意思是 你不被允许进入这个地带如果你没有作员执照的话

without是没有的意思

unless是除非的意思

6、since的用法希望能帮到你

unless的用法，它后面只能接句子，原题中不是句子（因为无主语），所以用without

我查了unless的用法，它后面只能接句子，原题中不是句子（因为无主语），所以用without

unless是除非的意思，without是没有的意思。不用语法，从逻辑上就能知道选什么

如果用unless的话 必须还得再加上youC. didn’t he realize D. did he realize he

unless后面接完整的句子。

till和unless

eg：Once you he taken the examination ,you will be able to relax.

题选B,的.

4、 当先行词是序数词或被序数词修饰时。

从句中,将来时用一般现在时表现.

第二题也是B.

until是直到,unless是除bad worse worst非.

如果非说区别,until的是时间状语从句,unless的是条件状语从句.

if 和 unless

(5)表示“虽然，尽管”。

我不会去参加宴会的，除非你也去。

当否定副词little置于句首时，其后习惯上要用倒装语序(与一般疑问句形式相同)。如：(分别为DD)

I won't go to the party unless you ......

For all that comrs can provide us with great , they shouldn’t be seen as substitutes for fundamental thinking and reasoning skills.

If tommorrow is not rain ,we are going to ......

英语单选,though和unless区别.

当so…that句式的“so+形容词”部分置于句首时，其后习惯上要用倒装语序( 与一般疑问句形式相同)。如：八、让步状语从句(答I‘ll take the job if the pay's not too low/unless the pay's too low.案为BB)