1. In order to help those students who fall behind other classmates, our teacher Paul is burnt out from weeks of overworking and stress. 为了帮助落后于其他同学的学生，我们的老师保罗因为连续几周的过度辛劳和压力而累垮了。
2. Contractors who fall behind schedule incur heavy financial penalties. 承包商如延误工期将被处以巨额罚款。
3. Modesty helps one go forward while pride makes one fall behind. 谦虚使人前进，骄傲让人落后。
4. Many Chinese mothers are afraid that their children will fall behind their classmates, so these mothers are becoming "tiger mothers". 许多中国妈妈担心自己的孩子会落后于同班同学，所以这些妈妈就变成了“虎妈”。
