I’m beat: “Beat” can mean to lose. It can also mean to be hit over and over again. When someone loses or they are hit over and over again, they are either mentally tired or physically tired. This phrase is saying you are very tired for whatever reason.As in After two hours in the gym and another hour swimming, I was beat by the time I got home.
中文释义：Beat有击打，击败的意思，从字面意思上来看，I’m beat是“我被打败了”的意思，但是常看美剧的朋友就知道，这是美国人惯用的口语，意思是：我累垮了！例句：I worked so hard today. I’m beat.（我今天工作很卖力，我累极了。）另外”累死了”除了“I’m beat”，还有以下几种表达方式：1) I’m exhausted; 2) I’m dead tired; 3) I’m worn out; 4)It’s killing me; 5) I’ve had a very long, hard day.