You are good at all your courses these years, so if you do like to spend another two or three years on campus, you should stick to it. 的翻譯應是：這些年來，你的課程都學得不錯，所以如果你的確愿意再學習兩三年，那你就應該堅持下去。句中的 do like 是 like 的強調說法，意思是“的確喜歡”“的確愿意”等。又如：　　

She does like dogs. 她真的喜歡狗。　　

He does speak well! 他的確講得很精彩。　　

So you did come after all. 你到底還是來了。　　

I did turn the gas off. 我確實把煤氣關掉了。