was和did用法分不清

回答
爱扬教育

2022-01-16

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was是过去式的be系动词,后跟形容词\名词\副词,作为助动词时后跟动词ing或动词的过去分词。通常表示过去的某种状态,可跟形容词作表语,过去分词表被动等。
did是过去式的助动词,通常表示发生在过去的动作,后边跟名词作宾语。

扩展资料

  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 ?