Question

—I drove to Zhuhai for the air show last week..
—Is that ________ you had a few days off ?

A．where

B．when

C．what

D．why

Answer 1

D

试题分析：考查表语从句。句意：—我上个星期开车去珠海看航展。—那就是你请了几天假的原因吗？本句中的why you had a few days off是一个表语从句，why在句中做原因状语。故D正确。What要在句中做主语，表语或者宾语等成分。AB两项的语义与句意不相符。故D正确。
点评：连接表语从句的连接词有：that, what, who, when, where, which, why, whether, how, whoever，whomever，whichever ，whatever等。还有如because, as if, as though等。解答这类题目，关键在于分析清楚句子结构。通过判断引导词在从句中所作的成分及意义，来选择正确的引导词。