Question

moreimportant和moreimportantly有什么区别

Answer 1

more important 是 形容词 important 的比较级，在句中一般充当定语，表语或者宾语补足语。
more importantly 则是副词 importantly 的比较级，在句中一般充当状语。

如：
In world trade, English is more important than Chinese. 表语
= In world trade, English is a more important language than Chinese. 定语
More importantly, English is easier to learn than Chinese. 状语