Maybe you have been inside all day long when a friend comes from outside.

假设你已经室内待了一天了，这时一个朋友从外面回来了。

Must 课堂 - SpeakingMax英语口语达人

Is it okay if a friend comes along?

我带个朋友来可以吗？

Is it okay 课堂 - SpeakingMax英语口语达人

Let's say your friend is a really great worker and your boss comes to you and says,

假设你有个朋友工作认真负责。有一天你的老板找到你，跟你说，

I agree课堂 - SpeakingMax英语口语达人