Tramps seem to be the only exception to his general rule. Beggars almost sell themselves as human beings to arouse the pity of passers-by. But real tramps are not beggars.

　　7.Tramps seem to be the only exception to his general rule.

　　在这条普遍的规律前面，好像只有流浪汉是个例外。

　　语言点:句子结构分析:to his general rule作证句子的补充状语。

　　8.Beggars almost sell themselves as human beings to arouse the pity of passers-by.

　　乞丐出售的几乎是他本人，以引起过路人的怜悯。

　　语言点:句子结构分析:to arouse the pity of passers-by是动词不定时短语，作目的状语，即“出售本人的目的是引起过路人的怜悯”。

　　9.But real tramps are not beggars.

　　但真正的流浪并不是乞丐。

　　语言点:句子结构分析:这句话由but引导，是对上句内容的转折。