【问】 《大学英语》精读Ⅳ，Unit 1： “Did you have a nice lunch?”she asked sweetly. I had had amarvelous steak，but know better by now than to say so.

句中的know better than to say so是否是指“比说出这一点知道得更好一些”?

【答】 know better than to do sth.一般可译为“懂得不该去做某事”、“很明白不致于去做某事”、“知道做某事是错误的”、“不会愚蠢(糊涂)到去做某事”。让我们看几个实例：

1. I knew better than to lend him any money. (ELD)

我知道我是不应该借给他钱的。

2. She should know better than to spend all her money on books. (LDAE)

她应该明白不能把所有的钱都花在买书上。

上面句子里的I had had a marvelous steak.but know better by now than to say so.似可译为：我吃了一个香喷喷的大牛排，但是此刻我明白我还是不说出来为好。

请做下面的试题：

I think your sister is old enough to know______to spend all her money on fancy goods.A. other than B. rather than C. better than D. more than