to know 和knowing有什么区别?

to know 和knowing有什么区别? know和knowing有什么区别 I come to know和I know有什么区别? nice knowing you.nice to have know you的区别 know 和know about有什么区别 know和 know about 有什么区别? 红线,48,用knowing还是to know 请问know和known有什么区别`` aware和know有什么区别？ just to let you know和just let you konw有什么区别? know、get to know和come to know的区别? didn't know,had't know和haven 't know用法有什么区别