We will confirm receipt when we received/receive it.主句用将来时,从句用一般现在时还是一般过去式?

问题描述:

We will confirm receipt when we received/receive it.主句用将来时,从句用一般现在时还是一般过去式?

用一般现在时,用一般过去时时,常常是在间接引语中,这个句子从属于另一个主句为过去时的句子,如:
He said that they would confirm receipt when they received it.
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