Tom＿＿＿＿＿＿＿show his exam results to his parents. A. dare notB. dared C. dare toD. dares not

问题补充：

Tom＿＿＿＿＿＿＿show his exam results to his parents.

A. dare not

B. dared

C. dare to

D. dares not to

答案：

(答案→)A. dare not

B. dared

C. dare to

D. dares not to

解析：情态动词dare的过去式为dared，常用于否定句、疑问句及条件句中，没有人称和数的变化，否定式是在dare后接not，再接动词原形。dare作为实义动词时，有人称和数的变化，构成否定句时，前要加助动词，后接带to或不带to的动词不定式。