1.He was not brave.He ___ jump down from a very tall wall.
问题描述：
1.He was not brave.He ___ jump down from a very tall wall.
A.dare not B.dared not C.dares not D.dare not to
2.I ___ the dinner,because my mother has done it
A don't need to cook B.needn't to cook
C.needn't have cooked D.don't need cook
我觉得是A,B
可是答案是B,A
答
(i/you/he) dare (not) + 动词原型 dared随时态变化need有两种用法：一、情态动词：(i/you/he) need (not) + 动词原型 一般无时态变化,常用于否定或疑问二、实义动词：i (do not) need to + 动词原型,he needs / doe...