There was a time when when后面的句子做什么成分?

There was a time when when后面的句子做什么成分? There was a time后面用that还是when? there was a time 后面加when还是while there was a time when I like it when when 后面的句子做什么成分 英语翻译句子结构：It is/was a time when...There is/was a time when... 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 time ...后面是用when or that there was a time when能否写成 once there was a time when 这里“when they come ”做句子的什么成分 there was 什么 time 什么chinese used foreign oil A. a when B. a 用以下的短语造句..there was a time when..it is the first time that..