高一英语下情态动词

高一英语下情态动词内容摘要：

____ so formally. ’t dress B. didn’t have to dress up C. Might not have dressed up D. needn’t have dressed up ’m rather surprised you haven’t reported him to your teacher. In my opinion, you ___ this as soon as you found out he was cheating. A. must have done B. might have done C. should have done D. could have done D C ，常用在否定句和疑问句中。 Dare (need) +S +V S + daren’t (needn’t) +V I daren’t walk through the forest at night. Dare you walk through the forest at night? You needn’t return the book now. Need he go yesterday? 可兼做行为动词的情态动词： need 、 dare ，常用在肯定句中 , 有人称、时态、和数的变化 He needs to go there himself. He has grown up,we don’t need to worry about him. (sb) need( want, request)+ doing/ to be done The house needs cleaning/ to be cleaned The boy needs sending to the hospital at once. 句型 时态 动词 情态动词 dare 实义动词 dare 肯定句 现在时 dare do dare/dares to do 过去时 dare do dared to do 否定句 现在时 daren’t/dare not do do/does not dare (to) do 过去时 dared not do did not dare (to) do 疑问句 现在时 Dare he do? Do you/Does he dare (to) do?。