do\doing\done\does\did这些分别是do的什么时态,一般现在是还是别的什么,说清楚点

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  • dodoingdonedoesdid这些分别是do的什么时态?

    它们不是什么时态,而是动词的几种基本形式.如do是动词原形,doing是现在分词,done是过去分词,did是过去式.

    它们是构成动词各种时态的基本要素,例如一般现在时态,通常要用动词原形来表示(例They do their homework every day.他们每天做作业),但是如果主语是第三人称单数时,动词要用三单现形式(如He does his homework every day.他每天做作业)does是do的第三人称单数现在式形式);

    再如They are doing their homework now.他们正在做作业.(现在进行时态)

    He / They did his / their homework yesterday.他(他们)昨天做了作业.(一般过去时态)

    He has already done his homework.他已经完成作业了.(现在完成时态)等等.

    动词时态的掌握要从时态的意义、构成、结构和常用时间状语等方面来掌握就比较容易了.