somebody + verb, however, ...
转折用法，用于连接前后两个对比或相反的事实。
He was tired. However, he continued working.
他很累。然而，他继续工作。
然而；不过
无论怎样；不管怎样；无论多么；另一方面；无论怎样；不管如何；尽管如此；然而；无论怎样；不管以何种方式
nevertheless; despite what has just been said
无论怎样；不管如何
Regardless of how; no matter how
尽管如此；然而
despite anything to the contrary (usually following a concession)
无论怎样；不管以何种方式
Regardless of how; regardless of the way in which.
相比之下；另一方面
by contrast; on the other hand
以任何方式；如何
In any way in which; how.
无论到什么程度
to whatever degree or extent
The weather forecast predicted rain; however, the sun came out in the afternoon.
天气预报说会下雨；然而，下午太阳出来了。
用法提示：副词，表示转折，引出与前面相反的情况。
AI contextual example
She studied hard for the exam; however, she still felt nervous.
她为考试努力学习；然而，她仍然感到紧张。
用法提示：副词，连接两个分句，表示对比或让步。
AI contextual example
The product is expensive; however, its quality justifies the price.
这个产品很贵；然而，它的质量证明了价格合理。
用法提示：副词，用于句首或分句首，表示转折关系。
AI contextual example
转折用法，用于连接前后两个对比或相反的事实。
He was tired. However, he continued working.
他很累。然而，他继续工作。
让步状语从句，表示“无论多么...”。
However hard she tried, she could not open the door.
无论她怎么努力，都打不开门。
较正式，常用于句首或句中，与however同义。
正式，强调对比，与nevertheless类似。
较口语化，常用于句首或句中，表示持续状态下的转折。
常用于否定句或疑问句，语气较弱，与but连用。
非正式，常置于句末或句中，引起转折。
grammar · medium
易错句子He is rich, however he is not happy.
正确表达He is rich; however, he is not happy.
错误地将'however'当作连词使用，正确用法是用分号或句号连接两个独立分句，并在'however'后加逗号。
grammar · medium
易错句子However it is raining.
正确表达However, it is raining.
'however'置于句首时，其后通常需要逗号。
此处针对 however 作转折副词的义项“然而；不过；可是”，与表因果/结论的 therefore 互为语篇反义关系。二者不能随意互换：however 引出让步和对比，therefore 引出结果或结论。其他义项（无论如何、究竟怎样）不适用于这组反义关系。
but和however都表示转折，但but是连词，直接连接两个并列分句，语气直接；however是副词，语气更正式，可放在句首、句中或句尾，且常与逗号隔开。
nevertheless与however意思非常接近，但nevertheless更强调让步后的转折，语气更强，常用于正式或强调的语境。
though作副词时相当于however，但常放在句末，语气较弱；作连词时引导让步状语从句，位置灵活。注意与however的区分：however不能引导从句。
无论多少
However much you try, you won't succeed.
无论你多努力尝试，你都不会成功。
无论多么困难
However hard the task is, we must finish it.
无论任务多么困难，我们都必须完成。
随你喜欢
You can arrange the furniture however you like.
你可以随你喜欢布置家具。
无论多久
However long it takes, I'll wait for you.
无论需要多久，我都会等你。
however常用于引出对比情况
however可引出例外情况
however引导的转折常提供另一种选择
however在议论文中连接对立论点
however常用来转变视角或观点
不管你怎么看
However you slice it, the company's profits have fallen.
不管你怎么看，公司的利润都下降了。
尽管如此
He may be late; however that may be, we will wait.
他可能会迟到；尽管如此，我们会等的。
Dictionary facts from DICTIONARY_API_DEV, ECDICT, WIKTIONARY.