这句话后面的DID是什么作用呢,为什么WAS不是用原形?because there was a time when al

这句话后面的DID是什么作用呢,为什么WAS不是用原形?because there was a time when al There was a time后面用that还是when? 请英语高手能帮我分析一下句子结构,because there was a time when all I did was That was the time you returned home.这句话为什么对,time后面不是应该加个when there was a time 后面加when还是while there was a time when There was a time when when后面的句子做什么成分? there was time ...后面是用when or that There was a time when parents who wanted ……为什么要用 when 用 there was a time when……造句 There was a time when i liked to draw some paintings.中,为什么要用 There was a time when·····这是什么句型