Hello,boys and girls!本次我们要学习的语法重点是过去进行时,现在我们就走进过去进行时“小课堂”吧!概念及用法:过去进行时表示过去某一时刻或某一阶段正在进行或发生的动作。由"助动词be的 Hello, boys and girls! The grammar we are going to learn this time is focused on the past. Now we are going into the past and we have a small class! Concepts and usages: When the past was done, it means that some time in the past or some time The actions that are happening or happening at the stage. By the auxiliary verb be