不可以的
与过去事实相反had + 过去分词should /would/could/might + have + 过去分词
与现在事实相反一般过去时(be用were) would/should/could/might + 动词原形
与将来事实相反一般过去时或should(were to) + 动词原形Would/should/cold/might + 动词原形