Question

----well, I forgot to bring my dictionary here yesterday. ----Actually you_____it here.

----Well, I forgot to bring my dictionary here yesterday.
----Actually you_____it here.You were not allowed to use it.
A.needn't bring

B.didn't need to bring

答案是b，为什么？a哪里不对了？请帮忙解释下

Answer 1

A.needn't bring如果选A的话，need在这句话里是一个情态动词，needn't bring表示 不准带来，代入题中不符合题意。
B.didn't need to bring选B的话，need是一个行为动词，didn't need to bring表示 不需要带来
You were not allowed to use it.指你们不允许用字典，但是没有说不能带来，所以B更符合题意
望采纳，谢谢

Answer 2

因为是昨天的事，所以要用过去时。
而needn't do sth. 是指现在或将来，如：
You needn't come to see me. 你不必来看我。

Answer 3

这里是过去时态 - A. 是现在时