1. Our coach gave us a pep talk when we were down by 1 point, and we won the game.2. Your son is falling behind in class. Has anything happened to him recently?3. The country is behind in terms of technology. or an underdeveloped country
 down by fall behind behind後面加上落後的分數. 用在成績績效等等. 說國家落後通常用 underdeveloped
1. 當我們落後一分時教練給了我們一個激勵的演說, 最後我們贏得比賽.2. 你的兒子成績落後不少,最近他有發生甚麼事情嗎?3. 一個落後的國家
After her husband went on a business trip to Paris, she waited for his return aniously.