In crowded cities like London, Birmingham or Manchester, road conditions are so chaotic that both driver and pedestrian often endanger lives through no fault of their own.
请问老师，原句的意思是“司机和行人处于生命危险是什么原因不是我们的错误”是吗？一般大家是在谓语动词前添加not。句中的这种否定，一般那种情况下用？
no+名词这种否定形式叫作名词否定句。比如
I have no money.= I dont have any money.
I will do it by no means. = I will not do it by any means.
一般名词否定句的语气更为强烈一些，更书面语一些。
本来endanger lives through no fault of their own可以改为dont often endanger lives through their fault或者dont often endanger lives through any fault ot their own。但因为主语是both...and...并列的主语，假如使用动词否定，而both为总括词（全名词），含有总括词的句子用not否定，即便在形式上否定的是谓语动词，在乎义上一般也是不是定总括词both，即“不是二者都。。。”。为了防止这种可能产生的歧义，作者使用了名词否定的形式。
Both of them are not doctors. 他们二人都不是大夫（错）。他们二人并不是都是大夫。（正确）
Neither of them is a doctor. 他们二人都不是大夫。
Both of them dont have money. 他们二人并不是都没钱。
Both of them have no money. 他们二人都没钱。
Neither of them has money. 他们二人都没钱。