come back的现在完成时

come back的现在完成时 在现在完成时中,return和come back有什么区别? come back 的用法 现在完成时的几个问题1、He has come back home just now.2、I'm glad you've get back 、go back 、come back 、walk back的区别? I have just come back.是现在完成时吗?如果是,那come为什么不用过去分词? come back和go back的区别 come back,give back 的翻译 come back 与go back 的区别 come back和 get back的区别 get back和come back的区别? get back 和come back的区别