连词是一种虚词,用于连接单词、短语、从句或句子,在句子中不单独用作句子成分。连词按其性质可分为并列连词和从属连词。并列连词用于连接并列的单词、短语、从句或句子,如and, but, or, for等;从属连词主要引出名词性从句(主语从句、宾语从句、表语从句等)和状语从句(时间状语从句、条件状语从句、目的状语从句等),引出名词性从句的连词如that, whether等,引出状语从句的连词如when, because, since, if 等。

but 与 however的用法区别

两者均可表示转折或对比,意为“但是”、“可是”、“然而”等,但有区别:

1. 表示转折时,but 是连词。如:

He is young but very experienced. 他虽年轻,但经验很丰富。

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. 他喜欢运动,而他妻子则喜欢音乐。

2. however 表示“然而”、“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,也许是因为像许多副词一样不仅能位于句首,而且能位于句中(注意前后使用逗号),甚至句末(注意其前也用逗号)。如:

Later, however, he changed his mind. 可是他后来改变了主意。

He hasn’t arrived. He may, however, come later. 他还没有到,不过他等会儿可能会来。

He said that it was so; he was mistaken, however. 他说情况如此,可是他错了。

注意: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. 他说情况如此,可他错了。

3. 当连接两个句子时,其前通常应用分号,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,但我想我们还得出去。

注意:上例中的 however 不能换成 but,但可用 but 来改写 (注意所用标点的变化)。如:

It’s raining hard, but I think we should go out.

怎么样,看完了这篇文章,大家是不是对but和however的用法区别有了初步的了解了呢?喜欢就赶快收藏起来吧~