1.定语从句
which指代的是要be clear的内容
2.on the other hand,请忽视,更好分析句子
我开始时理解by the way(顺便说),觉得它也可以去掉
The same studies have found that man tend to save for a car,which takes a suprisingly large amount of the household budget in N.A.
which在这引导非限制性定语从句,形式是",which"
指代前面整个句子,表示"男人为买车存的钱",占了整个家用的大部分
takes 表,占...的比例. 或者你理解成cost"花费"也行
但是,by the way也可看成, 用...方式做..
by the way in which/that/省略,即by the way () takes
参考:
以the way为先行词的定语从句通常由in which, that引导,而且通常可以省略,The way in which/ that/./ he answered the question was surprising.