中考英语知识点总结2021.doc

中考英语知识点总结2021本站为您整理“中考英语一般过去时知识点：三种变化技巧”欢迎阅读参考更多精彩内容请继续关注本网站相关栏目发布的信息。中考英语一般过去时知识点：三种变化技巧一变：肯定句变为否定句【技巧1】当句中含有情态动词或助动词couldwouldshould等时可直接在其后面加not构成否定句。例如：I could get you a concert ticket. I could not / couldn't get you a concert ticket.【技巧2】当句中含有系动词waswere 时可直接在其后加not构成否定句。例如：I was on the Inter when you called me. I was not / wasn't on the Inter when you called me.【技巧3】当句中谓语是除情态动词、助动词、系动词was,were以外的动词时在该动词之前加did not / didn't动词还原构成否定句。例如：The famous singer sang some Chinese songs. The famous singer did not / didn't sing any Chinese songs.二变：陈述句变为一般疑问句【技巧1】移动词语的位置。将waswere,couldwouldshould等移到句首。例如：He could pack his things himself. Could he pack his things himself?【技巧2】添加助动词did。谓语是除情态动词、助动词、系动词was,were以外的动词时在主语之前加did动词还原。例如：Mr Li looked very old. Did Mr Li look very old?三变：陈述句变为特殊疑问句【技巧1】确定疑问词：人who / whom物what地点where时间when / what time原因why频率how often长度how long距离how far等等。例如：They gave the concert last night. When did they give the concert?【技巧2】辨认结构形式：疑问词+情态动词/助动词/ was / were / did +主语+.? 例如：The accident happened near the station. Where did the accident happen.第 3 页 共 3 页