it upset him that nobody had told him about it为什么从句不用过去式

it upset him that nobody had told him about it为什么从句不用过去式

it upset him说明使他沮丧的事情已经发生过了.
因为upset没有加s,说明是过去式.所以那件事发生在过去的过去
对于这种在句子里有明确时间顺去的,我们要用过去完成时太
还有问题追问哦亲~