Although there was not as much homework as I was used to, it was stillchallenging.

这是高中英语新教程译林版必学1第1单元的句子。

请问句子中的as…as I was used to 的 to 后面有省略吗？假如有，这是什么省略？为何可以如此省略？另外，这里的最好像也不太好理解，前面是 there was…，后面是 I was used to，能如此比较吗？谢谢专家老师的解答！

把第二个as理解成关系代词，你就没疑问了。as I was used to是关系分句，这是我的理解。