一、用法说明
动词wish后接宾语从句时，从句谓语要用虚拟语气。若要表示与现在事实相反的愿望，从句谓语用一般过去时或过去进行时;若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;若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 were [was] better looking. 要是我长得漂亮些就好了。
She wished she had stayed at home. 她后悔的是她当时要是留在家里就好了。
I wish you would go with us tomorrow. 要是你明天同我们一起去就好了。
I wish you wouldn’t look down on this kind of work. 我希望你不要看不起这种工作。
This watch has gone wrong. I wish I had bought a better make. 这只表坏了，我真愿意我买的是好一点的牌子。
I wish you wouldn’t smoke any more. 我希望你不再抽烟了。
I wish you would be more respectful to your father. 我希望你对你父亲更尊敬些。
I wish I could be of some use. 我希望我能有什么用处。
二、特别注意
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。
From:https://www.zgghmh.com/CET-6/20007543.asp