You need to call her right now. 你现在得马上给她打电话。

　　You need to talk with your teacher. 你得和你的老师谈谈。

　　Do you need to get up early tomorrow morning? 你早上必须要早起吗？

　　Do you know what I mean? 你知道我说的是什么意思吗？

　　Yeah! You're saying you need to take a day off.  恩！你是说你需要休息一天。