come on什么意思

　　例句：

　　1.Come on! Quick! They'll see us!

　　快点吧！快！他们会看见我们的！

　　2.Come on! We don't have much time.

　　快点！我们时间不多了。

　　3.Come on, it's time we left.

　　快点，我们该走了。

　　4.How much is it going to cost, then? Come on, hit me with it!

　　那么它究竟要花费多少钱？快点告诉我吧！