2023年初中英語時(shí)態(tài)：一般過去時(shí)三種變化技巧

　　一變：肯定句變?yōu)榉穸ň?br />
　　【技巧1】當(dāng)句中含有情態(tài)動(dòng)詞或助動(dòng)詞could，would，should等時(shí)，可直接在其后面加not構(gòu)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】當(dāng)句中含有系動(dòng)詞was，were 時(shí)，可直接在其后加not構(gòu)成否定句。例如：

　　I was on the Internet when you called me. → I was not / wasn't on the Internet when you called me.

　　【技巧3】當(dāng)句中謂語是除情態(tài)動(dòng)詞、助動(dòng)詞、系動(dòng)詞was,were以外的動(dòng)詞時(shí)，在該動(dòng)詞之前加did not / didn't，動(dòng)詞還原，構(gòu)成否定句。例如：

　　The famous singer sang some Chinese songs. → The famous singer did not / didn't sing any Chinese songs.

　　二變：陳述句變?yōu)橐话阋蓡柧?br />
　　【技巧1】移動(dòng)詞語的位置。將was，were,could，would，should等移到句首。例如：

　　He could pack his things himself. → Could he pack his things himself?

　　【技巧2】添加助動(dòng)詞did。謂語是除情態(tài)動(dòng)詞、助動(dòng)詞、系動(dòng)詞was,were以外的動(dòng)詞時(shí)，在主語之前加did，動(dòng)詞還原。例如：

　　Mr Li looked very old. → Did Mr Li look very old?

　　三變：陳述句變?yōu)樘厥庖蓡柧?br />
　　【技巧1】確定疑問詞：人who / whom，物what，地點(diǎn)where，時(shí)間when / what time，原因why，頻率how often，長度how long，距離how far等等。例如：

　　They gave the concert last night. → When did they give the concert?

　　【技巧2】辨認(rèn)結(jié)構(gòu)形式：疑問詞+情態(tài)動(dòng)詞/助動(dòng)詞/ was / were / did +主語+...? 例如：

　　The accident happened near the station. → Where did the accident happen

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