题目内容
13．It's twelve o'clock．It's time ________ lunch．（ ）| A． | have | B． | to have | C． | had | D． | having |
分析 12点了，是吃午饭的时候了．
解答 答案：B．
动词不定式经常用于一些固定结构当中，比如it's time to do sth．意思是"是做什么的时候了"根据"It's twelve o'clock"以及"It's time ________ lunch"可知12点了，到了吃午饭的时候了，故选B．
点评 首先要掌握动词不定式的用法，然后结合具体的题目，就可以确定正确答案．
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