记忆方法
双解例句
小知识
However means “even so” or, “on the other hand,” and you use it to introduce a complication or contradiction. You might tell your friend, “I love your cooking. However, I already have plans for dinner tonight.”
The adverb however has a few different meanings. It often shows contrast. You might be training to become a lawyer, however your secret dream is to dance. However also means “in whatever way.” You might say to your father, “However you have to do it, convince Mom to buy me that car!” It also means “to whatever degree.” However certain you are in your gut that Mr. Plum is the murderer, you need to wait for evidence before accusing him.
实用短语
单词用法
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。
still：语气强，多用于肯定句或疑问句。指尽管作出让步，采取措施或表示反对，但情况仍然如故，无所改变。
yet：常用于否定句，语气比still稍强。指不管作出多大努力或让步，仍达不到预期的结果。
nevertheless：指尽管作出完全让步，也不会发生任何影响。
while：表对比，一般可与whereas换用，但程度弱一些。
whereas：表对比，一般可与while互换。
however多插在句中，有时也放在句首或句尾，但都应紧跟在进行对比的词或短语之后，用逗号将其与其他词分开。
however是how的强调形式，通常含有惊讶、质问、气恼或感叹等意味。
however可与but连用，也就是可以同时出现在同一个单句中，因为however只是副词。但although和but却不能同时出现，因为这两个单词都是连词（你最好理解为从属连词，虽然语法书都说这是并列连词，其实无所谓的），如果你理解为从属连词，那么意味着就都是连接的是从句，请问你的主句去哪里了？是不是没有主句了，没有主句就错了，所以不能同时出现。比如：Although he is young,but he is quite energetic.尽管他很小，但是他精力充沛。这其实是两个从句，但没有主句。一个句子只有从句，没有主句就是错误的。这就是为啥我们都说：主从复合句，也就是既要有从句也要有主句。
我们的解决方案就是：去掉其中任何一个从属连词，从而把这个分句变为主句，这不就对了嘛。
从今天开始，大家在作文里别总是用however/but这种低俗词汇，用用nevertheless这么长的单词多么高大上。
同义词辨析
这些连词或副词均含”但是，可是，然而，而”之意。
同义词
but / yet / notwithstanding / although / still / nevertheless
then / nevertheless / though / but / although / notwithstanding / whatever / whatsoever / yet / still