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 to2.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

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

dare可做实义动词，也可做情态动词，和need一样，不过做情态动词时一般过去式为dared，所以选B，就和can could一样就好理解了
第二题选C，意思是我本不必煮晚饭的因为妈妈已经烧了，needn't have done 表示不必做事实上却做了。
实义动词：dare/need to do, 情态动词dare/need do

答

(i/you/he) dare (not) + 动词原型
need有两种用法：
一、情态动词：(i/you/he) need (not) + 动词原型
二、实义动词：i (do not) need to + 动词原型，he needs / doesn't need to + 动词原型
祝你学习进步，更上一层楼！
——另外，正在冲采纳率，请记得采用，谢谢合作！(*^__^*)

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...

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 to2.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

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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 to2.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