I really can't afford any more interruptions right now.

　　四级词汇讲解:

　　afford本义为“给予;买得起”，引申开来可以表示“承受”，如本句中的cannot afford就相当于“不能承受”。

　　英语四级考点归纳：

　　afford的用法十分灵活。如:

　　※ I can't afford to play game with you, sorry.抱歉，我跟你玩不起。

　　※ Plenty of kids in this village can't afford to go to school(=can't afford education).这个村子里的很多小孩都上不起学。

　　※ I'm too busy to afford an hour for lunch.我太忙了，抽不出一个小时吃午饭。