I didn't know you painted.这句话里面painted加ed是因为过去式吗,可是不是已经有didn't 表过去了吗

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I didn't know you painted.这句话里面painted加ed是因为过去式吗,可是不是已经有didn't 表过去了吗
I didn't know you painted.这句话里面painted加ed是因为过去式吗,可是不是已经有didn't 表过去了吗

I didn't know you painted.这句话里面painted加ed是因为过去式吗,可是不是已经有didn't 表过去了吗
这个句子是一个主从复合句.
you painted实际上是一个宾语从句.它的时态有以下规则：
当主句是一般现在时,宾语从句用它本来的时态；
当主句是一般过去时,宾语从句用相应的过去时态（即一般现在时转化为一般过去时,现在进行时转化为过去进行时,现在完成时转化为过去完成时,一般过去时转化为过去完成时,一般将来时转化为过去将来时等）

know后省略了that
此处paint是不及物动词

这是个宾语从句，主句为I didn't know,后面省略了引导词that; 从句为you painted。因为主句的时态为一般过去时，故从句通常使用过去时态的某种形式（除了客观规律、真理等仍然使用一般现在时）。

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