请问什么叫做go up to sb.?

请问什么叫做go up to sb.? go up to sb.走到某人跟前 go up to sh.应该怎么翻译呢? go up to sb 有走向某人的意思吗 请问,It is up to sb.to do sth. go to sb. go back to sb. go back to sb. Can you help me (to go /go)up again?请问怎么选?什么情况下动词前加to? 两个句型‘～1.be important to sb./sth.2.build sb./sth.up请问, go up to them什么意思 请问meet up with sb.与meet sb.有什么区别? sb.is up to sth. sb.is up to sth. run up to sb三扣拉 be up to sb’s measure up 和measure up to sb go to sb on business to go beyond telling sb.