Unit 93. Are you sure?
第93单元 你确定吗？
A: Did you know Carl is almost fifty?
甲：你知道卡尔将近50岁了吗？
B: Are you sure? He doesn't look that old.
乙：你确定吗？他看起来并没有那么老。
A: He told me so himself.
甲：他亲口这么告诉我的。

类似用语
Are you positive?
你肯定吗？
Really?
真的吗？

百宝箱
上列对话中，“He doesn’t look that old．”句中的that作副词用，相当于so的意思，表示“那么地，如此地”。另外，注意以下例句所表达含义：
He looks young/old for his ae.
= He looks younger/older than he really is.
（他看起来比实际年龄年轻／老。）