wish后的宾语从句的虚拟语式
要表示与现在事实相反的愿望，从句谓语一般过去时或过去进行时，表示与过去相反的愿望，从句谓语用过去完成时或would / could+have +过去分词，表示将来没有把握或不太可能实现的愿望，用would (could)＋动词原形。如：
I wish I were not so busy. 但愿我不那样忙碌。
I wish I could be of some use. 我希望我能有什么用处。
I wish you would be more respectful to your father. 我希望你对你父亲更尊敬些。
注：从句的时态只与从句所指的时间有关，而与 wish 的时态无关，比较：
I wish I were rich. 要是我现在有钱就好了。
I wish I had been rich. 要是那时我有钱就好了。
I wished I were rich. 当时我后悔自己没有钱。
I wished I had been rich. 当时我后悔自己曾经没有钱。