第1个回答 2009-12-07
其实和现在时的形式都一样。改疑问句时,两种情况:1.借用助动词did,并提到句子主语之前,主语后面的语序不变,只是谓语动词要由过去式变成原形。He watched TV alone last night.--Did he wach TV alone last night?2.如果句子里的谓语是was或were,就只需把它们提到主语前。例:He was born in September.--Was he born in September?
改否定句也两种情况:在谓语是一般动词时直接在动词前加did't,同时动词由过去时改成原形。I visited my aunt yesterday.--I did't visit my aunt yesterday.2.若谓语动词时be动词,就在was/were后加not.There were a book on the table.--There were not a book on the table.
否定句改疑问句也一样,找准谓语动词,或借助did或直接把be动词网前提。
例I didnt like playing baskerball.--Did you like playing basketball?
He wasn't frendly to his new roommate.--Was he friendly to his roommate?
第2个回答 2009-12-07
否定句改疑问句,找准谓语动词,或借助did或直接把be动词往前提。
改一般疑问句,将did,do does be 提前
否定句在谓语动词后加not
第3个回答 2009-12-08
(一)
比如:
i told you that yesterday 这句。它是一般过去时态
一般疑问句就应该是:
did you tell me that yesterday?用do来占位置,所以一般过去时态里面的told变原型tell。
否定句:
i didn't tell you that yesterday.和一般疑问句一样,用do来占位置,told变原型tell。
陈述句就是一般过去时态本身的这个句子。
(二)
过去式的否定改为一般疑问句的话,先否定,再疑问。
(1)否定:i didn't tell you that yesterday.
(2)疑问:didn't you tell me that yesterday?
陈述句还是一般过去时态本身的这个句子。
第4个回答 2009-12-07
陈述句:She eated an apple an hour ago.
否定句 she didn't eated an apple an hour ago
一般疑问句 Did she eat an apple an hour ago?
Did she not eat an apple an hour ago?