新一轮中考复习备考周期正式开始, 一般过去时的构成: 1) 肯定形式:S+动词过去式(v.+ed)+O. 2) 否定形式:S+助动词did not+动词原形+O. 3) 疑问形式:助动词Did +S.+动词原形+O. eg. Last week Tom helped his parents do housework at home (责任编辑:admin) |
新一轮中考复习备考周期正式开始, 一般过去时的构成: 1) 肯定形式:S+动词过去式(v.+ed)+O. 2) 否定形式:S+助动词did not+动词原形+O. 3) 疑问形式:助动词Did +S.+动词原形+O. eg. Last week Tom helped his parents do housework at home (责任编辑:admin) |