it was so dark outside that he___go out alone. A.dared not to B.dared not C.dares not 选什么为什么
问题描述：
it was so dark outside that he___go out alone. A.dared not to B.dared not C.dares not 选什么为什么
答
B 首先排除C，因为主句it was so dark outside 是一般过去式，主句和从句的时态要一致的
A把dare当作行为动词，“不敢做某事”应该用助动词，构成didn't dare to do sth. B 把dare当情态动词。
答
A was是过去时。排除c，而dare to do
答
答案选A
解析：首先排除C,因为主句it was so dark outside 是一般过去式,主句和从句的时态要一直的,而C一般现在时.
其次在这里最好用dare 作为实义动词“敢---“的用法.dare to do sth 敢做某事!dare not to do sth不敢做某事.