题目内容
15．Our charity show for three hours this afternoon．We were tired but very happy．（ ）| A． | lasts | B． | lasted | C． | has lasted | D． | will last |
分析 今天下午我们的慈善表演持续了三个小时，我们很累但是很开心．
解答 答案：B．
根据句中的时间状语 this afternoon结合句意"今天下午我们的慈善表演持续了三个小时，我们很累但是很开心．"，判断设空处所在的句子用一般过去时． 一般过去时的构成是：主语+动词的过去式； 故答案为B．
点评 本题考查了动词的时态．做题时，一定要特别关注有关的时间短语，这是判断句子时态的标志．在没有时间状语的情况下可以联系上下文根据状语从句的类型来做出正确判断．
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