题目内容
9.Ididn't go (not go) to bed until my mother came back at ten last night.分析 我昨晚直到我妈妈10点回家才上床睡觉.
解答 答案:didn't go
依照题干的"last night"(昨晚)可以得知本句属于过去时态.而括号提示为否定形式,若动词欲表示为否定,必须助动词+not+动词原形,故可先初步确定空格要填入"do not go",但题干是过去时态,所以必须把助动词作过去式变换,do的三态为do/does did done,且题干中的"until"(直到的介词)单独使用表示"直到某刻才做某事",而搭配"not"使用时则表示"直到某刻才停止不做某事".所以空格要填入"did not go",故答案为"didn't go".
点评 比提考察同学对于时态变化的理解,尤其是助动词的三态变化,当然不只有do/does可作三态变化,还有can、will等等.
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