1.9 lay a finger on sb

lay a finger on sb 碰触/动**一根毫毛这也不是单纯地把手指放在别人身上，而是touch sb with the intention of hurting them physically即“碰触，动……一根毫毛”，有威胁的意味在里面。例如：If you somuch as lay a finger on my son again, I'm calling the cops.只要你再敢动我儿子一下，我就报警。你也可以说lay afinger on sth. 意思是碰某件物品，一般用于否定句“别碰……”例如：You'd better not laya finger on those documents!你最好别碰这些文件！