yet.but.however的区别.yet用于疑问句和否定句中,可是She is yet a child,和he was poor,yet happy

问题描述:

yet.but.however的区别.yet用于疑问句和否定句中,可是She is yet a child,和he was poor,yet happy
前面2句是否定句吗?从哪里看出来?第二句为什么poor后面要加逗号?另求3者区别,感激不尽.

这三个都是做连词表转折
but however 是逗号的区别,He is poor,but happy
He is poor,however,happy.(however 比较正式,换句话说就是写作文的时候用它比较受老师欢迎)
先纠正一下 你的说法 yet多用于疑问句和否定句中,但是用在肯定句的情况也不是没有
例;
肯定 Certain questions have yet to be clarified.
有些问题还需要弄清楚.《新英汉大辞典》
否定 She
didn't realize her mistake yet.
她还没有认识到她的错误.《21世纪大英汉词典》
疑问 Is he
up yet?
他起床了没有?《新英汉大辞典》
She is yet a child 她还是个孩子 这句中的yet 是副词 意思是 还
he was poor,yet happy 这句中的yet是连词 用法意思同but
一句话 做连词 but和yet 一样前边要有逗号,however 前后都要有逗号