有three days ago用一般过去时还是现在完成?

有three days ago用一般过去时还是现在完成? i bought a book three days ago.改为一般疑问句. 一般过去式与过去完成时的区分jack __(be)ill three days ago这里是要添一般过去式还是过去完成时态,应该怎样区分. we went three days ago 对three days ago She___(give) the book to me three days ago有ago的话,是用过去式还是完成时呢? I cleaned the whole house three days ago改为一般疑问句 he worked on the farm three days ago.(改为一般疑问句） where were you three days ago? three days ago是时间点吗?如题……那么since three days ago是用过去式还是现完？ Linda left Beijing three days ago改为同义句：____ ____from Beijing____ three days ago Paul left China three days ago,(改为同义句Paul ( ) (　　) ( ) ( )China since three days ago. There are lost of buses and cars.改为一般疑问句What did you do three days ago?做出回答 --When did your toothache start?--_____.A:About three daysB:Three days laterC:Three days beforeD:About three days ago 按要求改写句子 they read books in the library three days ago （用what) 过去的点时间有哪些,three years ago 是点时间吗 会英文的人士进.Three days ago I have been there.如果有,三天前,我去过那.用英文怎么说? three days later 的意思和用法、 与 in three days 的区别.three days ago 是三天前? 为什么用一般过去式?has your husband returned from shanghai yet?Yes,but he ______at home for only three days before he went to jepan on business.用was为什么?去日本是went 之前不是过去的过去吗？