you knew why all Englishmen loved the Queen ...why修饰名词englishmen

only my sister is at home...only是副词修饰名词吗？

【答】（1）这里的why不是修饰名词englishmen，而是引导宾语从句的连接副词：why all Englishmen loved the Queen是宾语从句，作 knew 的宾语。（2）这里的 only 是焦点副词，修饰作主语的代词或名词。又如：Only you could do a thing like that. 只有你才会干出那样的事。 Only my mother really understands me. 唯有我母亲才真正了解我。（此二例摘自《牛津英语用法指南》第三版）