DONGGUO ASKED HIM FOR HELP AND TOLD HIM WHAT HAD HAPPENED

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DONGGUO ASKED HIM FOR HELP AND TOLD HIM WHAT HAD HAPPENED
WHAT 什么用法

had done 是过去完成的用法,此处"发生了什么事情-what had happened" 中的"发生"是在told 之前,所以用过去完成时态.