6、“not…because…”，有时可否定前面，有时可否定because本身，往往出现歧义。应根据上下文面判定。
In 1600 the earth was not the center of the universe because the majority then supposed it was;nor,because she had more readers,was Ella wheeler Wilcox a better poet than Father Hopkins.
7、“so…that,such…that”是一个普通的句型，但在同一个句子里有两处使用它却比较少见。
The truth is,that in one point of view,this matter of national literature has come to such a pass with us,that in some sense we must turn bullies,else the day is lost,or superiority so far beyond us,that we can hardly say it will ever be ours.
8、“by doing…”结构。这个结构的意思是“通过(做)……”，但翻译实践中不能拘泥于这种释义，不少情况下需要灵活变通。
The hippos,by depositing dung in the water,fed the fish that support the storks that destroy the rare trees.