题目内容
5.Sun Hai his mother make dinner when his father got home from work.( )| A. | was helping | B. | helps | C. | helped | D. | is helping |
分析 当孙海的爸爸下班回家的时候,他正在帮助妈妈做晚饭.
解答 答案:A
根据 when引导的一般过去时的时间状语从句推断主句描述的是过去某个时间正在发生的动作,故用过去进行时态,它的构成为:主语+was/were+V-ing形式,主语是第三人称单数形式,be动词应该用was.故选A
点评 本题主要考查动词时态,判断动词的时态,要通过所给的时间状语或上下文等去判断动词的时态.
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