Examples
nǐ men你们de的jì huà计划hěn很hǎo好，kě shì可是wǒ我de的gèng更hǎo好。
你们的计划很好，可是我的更好。
Your plan is a good one, but mine is a better one.
可是这不是最后一班火车，对吧？
But that's not the last train, right?
我们早上九点上课，可是他八点就来了。
We start class at 9am, but he came as early as 8 o’clock.