英 [haʊˈevə(r)] 美 [haʊˈevər]
adv. 然而，可是，不过；无论如何；（用于表示惊讶）究竟怎样；……左右，……上下
conj. 不管怎样，无论如何；然而，可是
however /haʊˈɛvə/ CET4 TEM4
副词 You use however when you are adding a comment which is surprising or which contrasts with what has just been said. 然而 (用以引出令人吃惊或形成对比的话语)
This was not an easy decision. It is, however, a decision that we feel is dictated by our duty.
这可不是一个轻松的决定。不过我们觉得我们有责任做出这样的的决定。
副词 You use however before an adjective or adverb to emphasize that the degree or extent of something cannot change a situation. 不管多么 (用于形容词或副词前表强调)
You should always strive to achieve more, however well you have done before.
不管以前做得多么好，你应该始终争取更大的进步。
However hard she tried, nothing seemed to work.
无论她多么努力，好像都无济于事。
连词 You use however when you want to say that it makes no difference how something is done. 不管用什么方法 (用以表示没有区别)
However we adopt healthcare reform, it isn't going to save major amounts of money.
不管我们采取什么样的医疗改革措施，它都不会节省太多的钱。
副词 You use however in expressions such as or however long it takes and or however many there were to indicate that the figure you have just mentioned may not be accurate. 无论多久 (表示刚提到的数字不一定准确); 不管多少
Wait 30 to 60 minutes or however long it takes.
等30到60分钟，或需要的不管多长的时间。
疑问词 You can use however to ask in an emphatic way how something has happened which you are very surprised about. Some speakers of English think that this form is incorrect and prefer to use "how ever." 究竟如何
However did you find this place in such weather?
在这样的天气里你究竟是怎么找到这个地方的？
despite anything to the contrary (usually following a concession)
although I'm a little afraid, however I'd like to try it
同义词： nevertheless / withal / still / yet / all the same / even so / nonetheless / notwithstanding
by contrast; on the other hand
the first part was easy ; the second, however, took hours
to whatever degree or extent
The results, however general, are important ; they have begun, however reluctantly, to acknowledge the legitimacy of some of the opposition's concerns
in whatever way or manner
Victory, however it was brought about, was sweet ; however he did it, it was very clever
Immediately 大怒的郝珍立即(Immediately)找到了李鑫，然而(However)李鑫却理直气壮地说：“这房子(House)是我爹娘盖，成功是什么？ 2.
它也可以被用来作为增稠剂， 尽管用于勾芡不及其他淀粉(starch)，但是(however)在一些烘焙食品，它能充分保持水份。
... 黄昏里 In the twilight 奈何 However 一个小心愿 A mere wish ...
total的用法 however作连词，表示"尽管如此；可是；无论等"。放于句首应用逗号隔开。
无论如何；不管怎样
然而；可是
whereas / while / nevertheless / but / yet
On one issue, however, she was immovable.
然而，就一点而言，她态度是坚决的。
However, traders tended to discount the rumour.
但是，商人们倾向于不理会这个传闻。
However, he underestimates the scale of the problem.
然而，他却低估了问题的严重性。
However,the vote did not end the conflict between Congress and the White House over the future of the South.
VOA : special.2010.01.28
I have to write to them about that However we go to the text-only version here You see it`s all in text.
我得告诉他们这一点,下面我们进入文字版,里面全部以文本形式显示。
媒体、教育、市场课程节选 : 麻省理工公开课
However, your friend might think that what you're talking about is more important than the project that you're discussing.
然而，你的朋友可能觉得你们谈论的内容比项目更为重要。
SpeakingMax英语口语达人 : There is 课堂
This,he said, will lead to an increase in claims that judges are biased, "however groundless those charges may be."
VOA : special.2009.06.12
Vermont, however, still won the right for its researchers to ask for money under the National Sea Grant Program.
VOA : special.2009.01.05
However, the Anniesland result left the SNP's reputation as giant killers looking decidedly tattered.
The disappointing export figures, however, were partly offset by strong investment data released the same day.
The fortunes of one village, however, have brightened considerably over the last 30 years.
"however"是个多义词，它可以指however（英语单词）,However（华原朋美演唱歌曲）。