Question

8．由于下大雨，我们不得不待在旅馆．
We had to stay in the hotel because of the heavy rain．

Answer 1

分析 We had to stay in the hotel because of the heavy rain．

解答 答案：We had to stay in the hotel because of the heavy rain．这里是说过去的事情用一般过去时，主语是we，不得不have to，后接动词原形，have的过去式是had，待在旅馆stay in the hotel，故We had to stay in the hotel，由于这里用because of后加名词代词或动名词，大雨the heavy rain，故答案是We had to stay in the hotel because of the heavy rain．

点评 because是连词，其后接原因状语从句或回答以why开头的问句；
而because of是复合介词，其后接名词、代词或动名词，或者what引导的名词性从句．
如 Because he is ill，he is absent today．
He is not at school because of his illness．