实意动词否定形式:使用助动词进行否定。英语中助动词简介 (1) am,is,are ,was ,were,(帮助变进行时态,帮助变被动语态) (2) do ,does,did (帮助句子变疑问句,否定句,强调谓语动词作用) (3)has ,have (帮助句子变现在完成时态作用) (4) had ,(帮助句子变过去完成时态,以及虚拟语气倒装) (5) will ,shall (帮助句子变一般将来时态) (6) would ,should (帮助句子变过去将来时态) (7) be going to(帮助句子变一般将来时态) 一般现在时否定 do / dose 加 not
一般过去式否定 did 加 not
一般现在时,主语是第三人称使用does+not否定。 She dosen't watch TV everyday. 他每天不看电视。她she是单数三人称,使用does+not来否定。 一般过去式,任何人称主语都使用did+not否定。 They didn't swim last night. 他们昨晚没有去游泳。主语是他们,过去式,都用did+not 来否定。 提问和回答使用助动词提问和回答 1. He often plays ping-pong. Does he often play ping-pong? Yes, he does./No,he doesn't. 使用dose 主语是三人称单数,he,she,it。 2. They go to school by bus. Do they go to school by bus? Yes,they do./No,they don't. 一般现在时,主语非单数三人称,用do。 3. Tom had breakfast yesterday. Did Tom have breakfast yesterday? Yes ,he did. /No ,he didn't. 一般过去式,did。 巩固练习(请将下面陈述句改成疑问句,并分别做出肯定和否定回答)
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