certainly和of course有什么不同?
问题描述：
certainly和of course有什么不同?
RT
答
of course比certainly更口语化,都是当然的意思certainly是严格按照adverb形式使用的,而of course可以随便插入适当的日常对话中“he of course knows it”/ “he knows if of course”He certainly understand it.写...