今天要学的词组是a big deal。A big deal是指重要的事，大事。美国《福布斯》杂志公布了400名家产几十亿美元的富翁名单。杂志编辑说："It's a really big deal that it's all billionaires," 名单上全是家产几十亿的富翁真是不得了。

我们把有钱人称为百万富翁。百万富翁变成了几十亿富翁。这确实是件大事，Millionaires have been changed to billionaires and that's really a big deal。 一个18岁的孩子进入了研究院，真了不起，"An 18-year old boy has got into graduate school, that's a big deal." 但是如果你哥哥要你开车送他上机场，答应给你买杯咖啡。你可以用讽刺的口气对他说：Big deal! 你可真大方呀！今天学的词组是a big deal...