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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
先理解核心含义，再看它在真实句子里的用法。
然而；不过
nevertheless; despite what has just been said
He was tired. However, he continued working.
他很累。然而，他继续工作。
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
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。
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。
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。
AI contextual example
although I'm a little afraid, however I'd like to try it
虽然我有点害怕,不过我还是想试一试。
WordNet
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。
Not this
He is rich, however he is not happy.
Use this
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。
Not this
However it is raining.
Use this
However, it is raining.
'however'置于句首时，其后通常需要逗号。
Focus on the distinctions below. Other candidates are kept compact until a reliable usage note is available.
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。
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。
Use however naturally, then get feedback on meaning, tone, grammar, and phrasing.
Revisit a common error or keep this word in your review list.
记忆：how+ever='无论如何'，但作副词常表转折'然而'。
中性偏正式，常用于书面语或正式口语
Words like 'forever', 'whenever', and 'whatever' share a similar ending but may not rhyme exactly with 'however'.
Dictionary facts from DICTIONARY_API_DEV, ECDICT, WIKTIONARY.