1. …i used to write about the olympic games a long time ago. 很久以前我就在采写奥运会。 used （否定式简写为usedn't）过去经常，以前常常：we used to go there every year. 我每年都去那儿。he is not what he used to be. 他已不是旧日的他了。it used to be believed that sugar could decay the teeth. 过去人们认为糖会腐蚀牙齿。our company used to do business with
