定义：介词宾语从句是指名词性从句做介词宾语。
介词宾语从句特点：
1、介词宾语从句多由疑问词引导。
2、介词+that 结构。常见的有：in that因为、but that要不是、except that、save that、besides tha、beyond that 除了
例句：
1、Whether we find a joke funny or not largely depends on where we have been brought up.（新概念第三册）
我们觉得一则笑话是否可笑，很大程度上取决于我们是哪里长大的。
2、He was not conscious of what a big mistake he had made.
他没有意识到他犯了一个大错。
3、The essay was perfect except that there were some misprints.
除了一些拼写错误，这篇文章是很优秀的。
4、She knew nothing besides that he was such a bore.
她只知道他是个讨厌鬼，别的一无所知。
5、But that I saw it I could not have believed it.
要不是亲眼看到，我是不会相信的。