Although/ while/even though/whereas用法区别
混考区别的方法
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1.Although可做让步+转折， Although+句子放句首相当于though，放句中相当于but；though只用于让步；but只能用作转折；
2.注意转折平行的引导词, but/although，出现时左右要平行
3.Contract to/ In contract with相当于despite，后面只能接抽象名词,而despite+名词短语
4.With引导让步状语从句没有even though好用
5.Even though/although/while在逻辑上是可以相容的，此时根据其他考点排除选项，例如简洁有效，重复累赘
6.重复：even though与yet/but不能同时出现
Even though there be 错
7.Even if 词典ud to emphasize that something will still be true if another thing happens She's going to have problems finding a job even if she gets her A levels.
Ezaixiancidianven though 词典 ud to emphasize that something is true although something el has happened or is true .初中英语学习方法Even though he's 24 now, he's still like a little child.
对比可知，even if所接的东西是虚拟的，假设A发生了，B还是会发生。
Even though，虽然A发生了，强调B仍旧会发生. Even if+句子，不能加名词
8.Despite（介词）+名词短语，强调部分
Despite出现经常使句子成分残缺，或表现不出原句的含义，如因果
Despite+n+that/分词结构,容易造成句子累赘且表意不明，这东西没在划线部分正选中出现过，考过非划线部分要加名词短语
9.as oppod to sth，不能加从句
as oppod to sth
ud to compare two things and show that they are different from each other
美容美发师 Students discuss ideas, as oppod to just copying from books.
10.just as=even as在比较的时候是一个错误的用法，但可以用于举例,正如…，代替like。使用前提，不破坏原文的平行或固定搭配。
similar to+n 无法强调动作的相似性，常用just as/as+ 句子代替
like+n，不能加句子
similar to放句首必错
in spite of =despite 加短语
正确用法：(Just) as从句，主句 (Just) as从句，so 主句
(Just )as从句，so too主句
11.平行，主谓一致，固定搭配，简洁性原则>用词准确性
12.Gmat中while用作ud to emphasize the difference between two situations, activities etc为多。（A）
AS和WHILE都加句子表示伴随的时候，区别不是很大，看其他考点排除
13.在对比两物时，while强调两者的相同之处，而whereas强调两者的区别，
14.while不能用于举例比较。要用just as 或原文本身平行结构
15.无论文中出现那个表示转折的词语，都是要平行，简洁为先，就算哪个选项转折词用对了，他不简洁或破坏平行都错
16.as表示while和when，没有while直接
17.必错选项：while being
Although there be
第二的英文
Even though there be
As being
Despite+句子（一般出现despite就错了）
18.XDF: although,though, even though优先大于contrary，with 做句首
even though / although > despite, in spite of（石林语法）
把LIKE换成SEEM，AS 换成AS IF一定错。As though = as if （石林）
对有些不可能是转折关系的，必须把BUT 改成AND。（石林）
1.in spite of 2.becau of 都有问题
contrary to+抽象名词，修饰整个句子不存在逻辑主语问题。C+人名，错
In contrast with/to+名词，比较对象等。
unlike固定搭配：unlike x1，x2 do；
unlike/like+名词，放句首表比较
马尔克斯的名言Despite（介词）+名词短语，强调部分
Although+句子
even though+句子，强调整体
while只有放句首才表示让步，放句中表示两者的比较（while there be 错）
19.与其他用法对比：
Even though和although同时放句首，作用相同，看其他考点排除。而放句中时，表转折，even though容易造成句子破碎
20.while, whereas, or although
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暑期培训班The u of "while" to show contrast is common and accepted in informal usage. In formal
writing, however, "while" should be rerved to show that two or more events occur at the same time. In the following ntence, the two events are occurring simultaneously.
Measurements were taken while the specimen was rotating in the rig. For comparisons and contrasts, "whereas" and "although" should be ud instead of "while."粉色眼影
Positions are logged manually, whereas temperatures and pressures are recorded automatically by the thin-film nsors. The two events happen in different ways. They do not necessarily occur at the
same time.
Although positions are logged manually, temperatures and pressures are recorded automatically by the thin-film nsors. The meaning of this ntence is similar to the previous one, but it places more
emphasis on the differences between the two events.
Indiscriminate u of "while" where "whereas" or "although" would be more appropriate can even result in ambiguity and misunderstanding:
While my cat, Princess, eats quickly, she enjoys a leisurely stroll.
Does she do both at the same time? Using "whereas" or "although" in this ntence
would clear up the confusion.
In each ntence, lect the best choice for formal writing:
While /Although the method is efficient for most applications,
it can produce errors when small, irregularly shaped specimens are tested.
Place the sample into the rig while / whereas the power is off.
The Structures Division had responsibility for the fan blade design, while /whereas
the Materials Division was to develop the composite material for the blade. (The two
projects are not necessarily happening at the same time.)
While /Although the experiment was thermal cycling, an inert atmosphere was
maintained to avoid oxidation of the aluminum framework.
The single-crystal material is somewhat stronger, while /whereas the composite is
significantly lighter.
Make sure that excessive pressure is not applied while / whereas the surfaces are in
contact with each other.
while一般用在非正式英语中。正式英语中，while表示对比概念的时候，两个事物要是同时发生的。（进一步说明了while表达两个动作同时发生的特性）
whereas则是重点表示事物的强对比性，而两者不一定是同时发生的。
在当同时出现while和whereas，而句子是要表达两者的强对比概念时，应该使用whereas
而although是表示让步的意思。
用while/whereas/although 主要还是看句子意思。强调同时发生用while，强调对比用wh
ereas，表让步用although
21.Although：
1 句首，相当于though
句中，相当于but：
2 Although +句子（主谓宾或者形式主语在前的句子）
英语学习电影Although通常加句子，而如果although后面没有主语和完整的谓语则错
3 Although there be句型必错
Although+主动>although+被动
Although和yet不能同时出现
使用前提：不能破坏平行，遵从主谓一致，表达文中应有意识
22.While：
1 While 连词，表示during，加句子或短语
连词，表示although，加句子，引导平行（可能形式不一致，具体分析）
2 必错选项：while being
破坏原文平行结构
无法显示原文的因果关系
原文需要and来表示并列的时候不能用while
照成句子结构累赘
3WORD CHOICE: during, while
!! Do not say 'during doing something'. Say while doing something : While travelling to work, I saw an accident (NOT During travelling to work, I saw an accident).
!! Do not say 'during someone does something'. Say while someone does something : He stole her money while she slept (NOT He stole her money during she slept).
!
! Do not say 'during someone is young/asleep etc'. Say while someone is young/asleep etc : It's best to get your teeth fixed while you're still young (NOT during you're still young). during, for, or since?the reader See note at SINCE
介词
