manbetx报道:

  差别一表现起色时,but 是连词。如:He is young but very experienced. 他虽年轻,但经历很丰富。He has three daughters but no sons. 他有3 个女儿,但没有儿子。He likes sports, but his wife likes music. 他爱好活动,而他老婆则爱好音乐。差别二however 表现“然则”、“可是”时,有的词书认为它是连词,有的词书认为它是副词。之所以将其视为副词,或许是因为像很多副词一样不只能位于句首,而且能位于句中(留心前后应用逗号),乃至句末 (留心其前也用逗号)。如:Later, however, he changed his mind. 可是他后来修改了主意。He hasn’t arrived. He may, however, come later. 他还没有到,不外他等会儿能够会来。He said that it was so; he was mistaken, however. 他说状况如此,可是他错了。注:以上各例中的 however 不能换成 but,但可用 but 来改写。如:He said that it was so, but he was mistaken. 他说状况如此,可他错了。差别三当连接两个句子时,其前平日应用分号,或另起新句。如:It’s raining hard; however, I think we should go out. It’s raining hard. However, I think we should go out. 雨下得很大年夜,但我想我们还得出去。(from www.yywords.com)注:上例中的 however 不能换成 but,但可用 but 来改写 (留心所用标点的变更)。如:It’s raining hard, but I think we should go out.

  副词 多么

  犹

  连词 可是

  不外

  却

  但

  然

  然则

  然则

  but

  名词 辩论

  副词 惟

  介词 除 ... 以外

  连词 只

  不外

  但

  只是

  然则

  而

  可

  可是

  却

  然

  然则

  代词 任何人

  however=but=on the other hand=on the contracy=whereas

  用however 在白话中比but 好,教员看得舒适

  两个都是表起色的,

  然则however前面必然要有逗号,就是(however,)而but前面没有逗号。