however表转折时是--副词,为什么叫转折--"连词"?

1. 用作副词(1) 表示让步：意为“无论如何”“不管怎样”，用来修饰形容词或副词，其词序为：however+形容词或副词+主语+谓语。这样用的however其实具有连词的功能，用以引导让步状语从句。如：Phone me when you arrive, however late it is. 你到达之后就给我打电话，不论多么晚也要打。However much he eats, he never gets fat. 不管他吃多少，他永远吃不胖。However cold it is, he always goes swimming. 不管天有多冷，他都去游泳。You won’t move the stone, however strong you are. 不管你力气有多大，也休想搬动那块石头。However far it is, l intend to drive there tonight 不管有多远，我今晚也要开车到那儿去。用于此用法时，请注意以下几点：①此用法属however所有用法中最重要的考点，同学们务请引起高度重视。②这样用的 however 与 no matter how 大致同义。如：People always want more, however [no matter how] rich they are. 人总是富了还想再富。However [No matter how] hard I worked, she was never satisfied. 无论我多么努力地工作，她从来没满意过。③有时从句谓语可用情态动词。如：Don’t laugh, however funny it may be. 无论多么有趣也不要笑。I’ll try to finish it in time, however hard it may be. 无论多么难，我也要按时完成。④“however＋形容词或副词＋主语＋谓语”有时可以有所省略。如：I refuse, however favorable the conditions. 不管条件如何有利，我都不干。(conditions后省去了are)I’d rather have a room of my own, however small (it is), than share a room. 无论房间多么小，我宁愿一个人住一间，而不愿意与别人合住一个房间。A grammar rule, however true (it is), is useless unless it can be understood. 一条语法规则，不管如何正确，除非能懂，否则毫无用处。(2) 表示转折：尤其用于谈及一个既成事实时，表示转折，其意为“可是”“仍然”等。可放在句首、句中或句末，通常用逗号与句子其他成分隔开。如：My father, however, did not agree. 但是，我父亲不同意。My room is small; however, it’s comfortable. 我的房间很小，但却很舒服。He said that it was so; he was mistaken, however. 他说情况如此，可是他错了。注：however不能像 but(但是)那样直接连接两个句子(注意正句中的标点符号)。如：我们都已尽了最大的努力，不过我们还是输了。误：We all tried our best, however we lost the game.正：We all tried our best, but we lost the game.正：We all tried our best; however, we lost the game.正：We all tried our best. However, we lost the game.(3) 表示惊奇或强调：相当于how ever的用法，其意为“究竟怎样，到底以什么方式”。如：However did you get here without a car? 没有汽车你究竟是怎样来的呢?However does he manage to write music when he is so deaf? 他聋成这个样子，究竟是怎样从事作曲的呢? 望采纳

承接上文,但下文和上问的话是对立关系.however在这里就起连词的作用.每个词放在不同的句子里要适情况而定的翻译

如果你是英语本专业的，可以值得研究。如果你是考研的，就不需要知道得那么详细了。考研重点不是这些。个人观点，仅供参考

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