Is this the right bus for San Francisco?

这是到旧金山的巴士吗?

It sure is. Can I see your ticket?

正是，我可以看看你的车票吗?

When's the first stop?

第1站什么时候到?

Do you know when the earliest bus usually leaves?

你知道最早的那班巴士通常几点离开吗?

Is it just a bus?

是不是普通大客车?