英语四级高级语法讲解：让步状语从句
以下是小编带来的英语四级高级语法讲解：让步状语从句，下面是小编收集整理的英语四级高级语法讲解：让步状语从句，仅供参考，大家一起来看看吧。
常见的连接词有though, although，as, while, even though
区分though，although，as
eg：Although/though he is a child, he can live by himself.
as 表示虽然的时候，要进行倒装;
Child as/though he is , he can live by himself.
eg：Although/though she works very hard ,she makes very little progress.
Hard as she works, she makes very little progress.
Although/though she is young, she has travelled to many countries to put shows .
Young as she is, she has travelled to many countries to put shows .
while：连接两个句子，表示虽然，但是;
eg：He is experienced while he is young.
真题分析：
1.The anti-virus agent was not known
(直到一名医生偶然发现了它)
until a doctor find it by chance.
2.I would prefer shopping online to shopping in a department store because __________(它更加方便和省时)
it is more convenient and timesaving.
3.But since water is much cheaper than wine, and many of the fancier brands aren’t available in stores, most diners don’t notice or care.
4. While there’s no question that continuous stress is harmful, several studies suggest that challenging situations in which you’re able to rise to the occasion can be good for you.
总论与注意事项
让步状语从句表示：虽然，尽管，即使等概念，由although， though（尽管，即使），however（无论怎样），whatever（无论什么），whoever（无论谁），whomever（无论谁），whichever（无论哪个），whenever（无论何时），wherever（无论哪里），whether（是否），no matter (who，what，where，when，etc) （无论……），even if（即使），even though（即使）等疑问词+ ever类词引导。
如：We won’t be discouraged even if (=even though) we fail ten times.我们就是失败十次也不泄气。
It was an exciting game， though/although no goals were scored.那是一场精彩的球赛，尽管一个球都没进。（though， although不能与but连用）
Whether you believe it or not， it’s true. 不管你信不信，这是真的。
However (=No matter how)expensiveit may be， I’lltakeit. 无论它有多贵，我也要买下它。
Don’t let them in， whoever(=no matter who) they are. 不管他们是谁，别让他们进来。
No matter what I say or how I say it， he always thinks I’m wrong. 无论我说什么或怎么说，他总认为是我错。
even if 与even though 的区别：
1.even if 与even though 的区别两者均可用于引导让步状语从句，其细微区别是：
1. even if 引导的从句往往是假设性的，相当于汉语的“即使”“纵然”“就算”“哪怕”。如：
They’ll stand by you even if you don’t succeed. 即使你不成功，他们也会支持你。
Even if I have towalkall the way I’ll get there. 即使我得一路走着去，我也要走到那里。
Even if it rains tomorrow， we won’t change our plan. 即使明天下雨，我们也决不改变计划。
For my part， I plan to go to the party even if you decide not to go. 至于我，即使你决定不去参加晚会我也会去的。
Even if you saw himpick upthe money， you can’t be sure he stole it. 就算你看见是他拾起的钱，你也不能肯定钱就是他偷的。
正因为even if从句的内容通常是假设性的，所以有时还可用于虚拟语气；这样用的even if 与单独使用的if比较接近。如：
Even if he had the money， he wouldn’t buy it. 他即使有钱也不会买它。
I would have married her even if she had been penniless. 即使她身无分文，我也会和她结婚。
2.even though 引导的从句内容往往是真实的，主要用于引出不利于主句情况的信息，相当于汉语的“尽管”“虽然”。如：
He went out even though it was raining. 尽管在下雨，他还是出去了。
Even though it’s hard work， I enjoy it. 虽然工作艰苦，我还是很喜欢。
He’s the best teacher even though he has the least experience. 他尽管经验最少，但教得最好。
Even though I didn’t know anybody at the party， I had a nice time. 尽管这次聚会上我谁也不认识，我也玩得挺痛快。
这样用的even though与though或although的意思比较接近，许多时候可以互换（注意：英语可以说though和even though，但不能说even although）。如：
Eventhough[Though， Although] I felt sorry for him， l was secretly pleased tha t he was having difficulties. 虽然我为他感到惋惜，但对他的困难却暗自高兴。
Even though [Though， Although] we all tried our best， we lost the game. 虽然我们已尽了最大的力量，但还是输了。
3.不过，在实际语言运用中，even if与even though有时也可不加区别地混用。如：
Even if [Even though] she laughs at him， he likes her. 尽管她嘲笑他，他还是很喜欢她。
We thoroughly understand each other， even if [even though] we don’t always agree. 我们彼此非常了解，虽然有时候也有一些分歧。
4.no matter
what（who，which，when，etc.）与whatever（whoever，whichever，whenever，etc.）的区别：
当引导引导让步状语从句时，两者相同，可以互换（what=the thing， whatever = anyting），但当引导名词性从句（主语从句，宾语从句，表语从句和同位语从句）时则只能用whatever（whoever，whichever，whenever，etc）。如上面最后两个例句可改为：
However pure the water looks， I do not want to drink it.
I want to marry the man I love， no matter who he may be.
下面句子不能用no matter结构（no matter不能引导名词性从句）：
Whoever comes back first is supposed to win the prize.（主语从句）
I am ready to do whatever you want me to .（宾语从句）
例证：
Whatever you did，I will accept.为让步状语从句.
I will accept whatever you did.为宾语从句.
5.as 引导让步状语从句的用法
引导让步状语从句时，as意为“虽然，尽管”，通常从句要倒装，倒装的方法是将从句的表语或状语放在as之前，而用though引导让步状语从句时句字则不必倒装（口语中也可倒装）。
e.g. Heavily as it was raining outside， they started out very early.
Young as he is， he knows a lot = Though he is young 或 Young though he is，he….
他虽然年轻，但懂得很多。（though 也有这种用法，可以替换as，但although没有这种用法）
注意，名词提句首时，不加冠词：
e.g：teacher as he is， he likes Chinese very much（teacher 前不加a或the）。
though还可以用作副词，放在句末。如：
It was a hard job， I enjoyed it， though = It was a hard job， but I enjoyed it.那工作很苦，但是我喜欢干。
6.用though/although， as 引导让步状语从句时，句中不能用but表示转折语气。
不能说：Though he looks weak, but he is healthy.
而要说：Though he looks weak, he is healthy.
或者说：He looks weak, but he is healthy.
我自己认为让步就是存在一定条件下的说法.
though和although引导让步状语从句时，不可以与but连用（因为but是并列句的连词，一个连词连接两句句子，不能用两个连词连接两句句子）。汉语中用“虽然……但是……”，但英语中只用though，although或but即可。
Although/though he is very old， he still works very hard. =（He is very old, he still works very hard）虽然他老了，但他仍然很努力地工作。
不可说：Although/though he is very old, but he still works very hard。
though和although可以与yet连用。此处yet虽与but同义，但它不是连词，而是副词。
Though l knew the fact，yet l didn’t say anything。 尽管我知道，但我什么都没说。
7.however 表示“然而”用作副词，不可连接句子。但可置于第二句的句首、句末或句中。要特别注意标点的使用。
eg: Alice is a good student．However, she has oneshortcoming．爱丽丝是一个很好的学生，但她仍有缺点。
He has not arrived. He may, however, come later.
The composition is all right.There is room for improvement, however.
8.除以上提到的从句连词外，表示让步的介词短语有despite，in spite of，后接名词。【此时，整句话不是让步状语从句】
eg. Despite all these facts， we cannot ignore the advantages of learning through internet.尽管有这些事实，我们也不能忽略了通过互联网学习的优点。
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