1) Is it an express train?
是快车吗？
2) Is this an express train?
这是快车吗?
3) Be this an express ?
这是一列快车吗?
4) Is there an express train?
有快车吗？
5) Is that an overnight trip?
是班夜车吗？
6) It's very cool, isn't it?
很凉快，不是吗？
参考词条