“It is not,however,always a smooth and safe one.”中however是什么用法,为什么放在句子中间,放在句首可以吗?为什么与中文的说法不同?

问题描述:

“It is not,however,always a smooth and safe one.”中however是什么用法,为什么放在句子中间,放在句首可以吗?为什么与中文的说法不同?

however“然而”,作插入语,可放在句首、句中、句末.插入语经常用逗号和句子分开,去掉以后对句子结构没有影响.
*汉语当中也可能会出现说着说着突然想起某个词的情况,插入语就好像这种情况一样.
eg: She, I think, is a teacher. (I think就是插入语)