用upon doing造句

造句如下：1、I no longer felt proud of my job and even looked down upon myself for doing things like that.我不再为我的工作感到骄傲，甚至还因为做那样的事而看不起自己。2、He fixed his attention upon what he was doing.他专心于在从事的工作。3、Ambition often puts men upon doing...