Expansion 7 Revision 直到 _ 直到 才 _ 一 就 _ 当 (与其他动作同时发生 ) _ 当 (与连续性动词连用 ) _ 当 _ 在 之前 _ 在 之后 _ 曾经 _ 自从 _ until notuntil as soon as as while when before after once since 【最新】九年级英语【最新】九年级英语 Unit7 Expansioin7课件课件 北师大版北师大版 课件课件 当我还是个孩子的时候 ,我很瘦 . I was thin _ I was a child. 当我做作业时 ,妈妈在做饭 . My mother was cooking _ I was doing my homework. 我们要过好久才能见面 . It will be long _ we meet again. 你可在这里待到雨停 . You may stay here _ the rain stops. 他直到完成工作才去睡觉 . He didnt go to bed _ he had finished his work. 自到中国以来，他已结交了许多朋
