10.引导比较状语从句的连词：
than: You sing better than I do. 你的歌唱的比我好。
as: That's not so simple as it sounds. 那事并不像听起来那么简单。
11. 引导其他从句的连词：
1)引导主语从句和宾语的连词有that和whether, if 可以引导宾语从句：
that: She always complains that he is down on her. 她老是抱怨他看不起她。
whether: I don't know whether you like flowers. 我不知道你喜不喜欢花。
2)that和whether 还可以引导表语从句：
that: The fact is that he doesn't really try. 事实是他没有真正去努力。
whether: The point is whether we ought to recommend him. 问题是我们是否应当推荐他。
