but 和however 有什么区别?如句中：I've come to the conclusion that the people who are trying to save the world are probably quite sincere about it,but they dont't know ...其中but可以换成however 所以因为they前没有逗号所以不

but 和however 有什么区别?如句中：I've come to the conclusion that the people who are trying to save the world are probably quite sincere about it,but they dont't know ...其中but可以换成however 所以因为they前没有逗号所以不
but 和however 有什么区别?如句中：I've come to the conclusion that the people who are trying to save the world are probably quite sincere about it,but they dont't know ...其中but可以换成however
所以因为they前没有逗号所以不能用however来换？

but 和however 有什么区别?如句中：I've come to the conclusion that the people who are trying to save the world are probably quite sincere about it,but they dont't know ...其中but可以换成however 所以因为they前没有逗号所以不
辨析 however和 but
二者都意为“可是,但是”；
but是并列名词,连接两个并列分句,上下二句在总的意义上构成了对比.
I really don't like cheese,but I will try just a little this time.我实在是不喜欢吃奶酪,但是这次我要尝一点.
however不能直接连接两个分句,必须另起新句,并用逗号隔开.
It was raining hard.However,we went out to look for the boy.雨下得很大,不过我们还是出去寻找那个孩子
but 口语常用词,语气较强,泛指与前述情况相反.
however 表转折关系,语气稍弱于but,连接性也弱一些,因而常作插入语.
应该可以换吧.

1、but 副词
This took him but a few minutes. 这仅仅花他几分钟时间。 She is but a child. 她不过是一个孩子罢了。 I can but hear. 我只能听听而已。 If I could but see him! 我要是能见一见他就好了! I can but try it. 我好歹试试看。 He left but an hour ag...

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1、but 副词
This took him but a few minutes. 这仅仅花他几分钟时间。 She is but a child. 她不过是一个孩子罢了。 I can but hear. 我只能听听而已。 If I could but see him! 我要是能见一见他就好了! I can but try it. 我好歹试试看。 He left but an hour ago. 他一小时以前才离开。 It happened but yesterday. 这件事昨天刚发生。 B- I did go there. 然而我确实是去过那里了。
h2/owever（程度副词）可位于形容词／副词之前：
You couldn’t earn much，however hard you worked
无论你干得多卖力，你都挣不了多少钱。
however（连词）通常意为“但是”，可位于它所引导的从句之前或之后，或位于第一个词或短语之后：
I’ll offer it to Tom．However，he may not want it．／He may not want it however．／Tom，however，may not want it．／If，however，he doesn’t want it...
我将提出把这个给汤姆，然而他可能不要它。／而汤姆可能不要它。／然而，万一汤姆不要它的话……
但提到两句意义相反的话时， however意为“但是／仍然／同样”：
They hadn’t trained hard，but／however/nevertheless/all the same they won however／nevertheless／all the same．
他们并没有刻苦训练，但／无论如何／仍然／同样获胜了。

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however 不用另起新句哦...
quite sincere about it; however, they don't know...
用分号这样连接也可以 =]
另外,补充一下but在正式的essay里是不可以用在句首的,跟because一样.
我在加拿大11年..不会错啦..

不可以换！

1. however作副词用时，表示“然而；但是”，可以位于句首、句中和句末；位于句首时，要用逗号与句子其它部分隔开；位于句中时，其前后都要用逗号；位于句末时其前用逗号分开。 例如:
She felt ill. She went to work, however, and tried to concentrate.
她病了。然而她照旧去上班，并且尽力集中精神工作。
H...

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1. however作副词用时，表示“然而；但是”，可以位于句首、句中和句末；位于句首时，要用逗号与句子其它部分隔开；位于句中时，其前后都要用逗号；位于句末时其前用逗号分开。 例如:
She felt ill. She went to work, however, and tried to concentrate.
她病了。然而她照旧去上班，并且尽力集中精神工作。
His first response was to say no. Later, however, he changed his mind.
他最初的反应是不同意，可是后来他改变了主意。
2. however与but 两者都做“但是，然而”讲，而且都引出并列句。从语义上看，but所表示的是非常明显的对比，转折的意味较however要强。从语序上看，but总是位于所引出的分句之首，而however却可位于句首、句中和句末，同时从标点符号上看，but之后一般不得使用逗号，而however则必须用逗号与句子其它部分分开。例如：
I thought those figures were correct. However, I have recently heard they were not.
我原以为那些数字正确无误，不过我最近听说并不正确。
3. however的其它用法： however可以作连词(conj.)，表示“无论以何种方式，不管怎样”，引导让步状语从句。例如：
You can travel however you like.你可以随心所欲地去旅行。
However I approached the problem, I couldn’t find a solution.
这一问题我不管怎样都无法解决。

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