There was once ___ time ___ they were good friends 为什么填a,when

显示全部楼层 · 2013-2-12 16:04:19

There was once a time when they were good friends 从前有一段时间他们曾是好朋友There was有once 从前a time一段时间 when 关系词when they were good friends 定语从句++++希望你可以帮助你被你采纳我也可以加分哟哈哈...

千问 · 2013-2-12 16:04:19

a time在这里是
一段时间的意思there was a time when是一个固定句型有一个时期怎么样when引导定语从句...