was和did用法分不清
回答
愛揚(yáng)教育
2022-01-16
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did是過去式的助動(dòng)詞,通常表示發(fā)生在過去的動(dòng)作,后邊跟名詞作賓語。
擴(kuò)展資料
如:
He was a student ten years ago.
He was doing his homework at nine last night .
He did his homework just now.
Did he do his homework just now ?