题目内容
6．昨天因为下大雨．我们不得不呆在家里We ①had②to stay at home because of the heavy rain yesterday．
分析 had to
解答 答案：（1）had （2）to 不得不的表达 have to．根据句意yesterday昨天，可知时态为一般过去时态．故have to 应变为过去式had to．故填写had to．
点评 填空时应该首先观察句中时态，再根据句意选择动词短语．
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