意思是买的起，付得起、花得起时间、金钱、精力等。但是Afford只能表示能力，不表示意愿。例如我们可以说I'm willing to pay， but I really can't afford it，而不能说I'm willing to afford it.
用好这个词，我们的水平就会提高一个档次，让你的同学打心底里佩服。
1、这顶帽子贵得也太离谱了，我买不起。This hat is so expensive that I can't afford it.
2、这个村子里好多儿童都上不起学。
Plenty of kids in this village can't afford to go to school （can't afford education）。
3、抱歉，我跟你玩不起。
I can't afford to play 'games' with you， sorry.
这100词到底要写多长时间，我也不知道。现在工作太忙了所以我还得慢慢写，I can't afford to lose my job， because I'm the bread-winner and I have a big family to support.
来源：无忧考网-英语口语 http://www.51test.net/yyky
