1. however: 表达“但是,然而”的意思时,用作副词词性,可用于句首、句中、句尾的位置。用于句首是地,其后要用逗号隔开;用于句中时,其前后均要用逗号隔开;用于句尾时,其前要用逗号隔开。
例句1:It is raining hard. However, they are still walking in the street.
雨下得很大,然而他们还在街上走着。
例句2:However, traders tended to discount the rumor.
但是,商人们倾向于不理会这个传闻。
例句3:They do share a mutual interest in design, however.
然而,他们确实对设计有共同的兴趣。
2.but:表达“但是,然而”的意思时,用作连词,一般置于句中,与后面的句子连用,其转折意味较however要强一些。从语序上,but 总是位于所引出的句子之前。
例句1:I’d like to go swimming with you, but I have to do my home work now.
我想和你去游泳,但我现在得写作业。
例句2:I shouted for help but nobody came.
我大声呼救,但没人来。
例句3:Change will come, but it will take time.
变化会有的,但需要很长时间。
however
1、Elections should go ahead, however imperfect they are.
不管是否完美,选举终究是要继续。
2、However I think it unwise going on as we are without a plan.
但是像我们这样没有计划地进行,我看是不明智的。
3、Most orthodox doctors however dismiss this as complete nonsense.
然而大多数传统的医生将此视为纯粹的胡言乱语而不予考虑。
but
1、He gave Ben his brush with worry on his face but joy in his heart.
他把刷子给了本,脸上看似忧虑,实则满心欢喜。
2、The proof-reader had changed a word but I stetted it
校对员改动了一个词, 我批注不应改动, 恢复原状
3、But it also poses the biggest threat to open markets in the modern era of globalisation.
同时它还最大程度的威胁到了现代社会的全球化进程。