it is high time that后的句子如果是Be动词,是不是一定要用were?

it is high time that后的句子如果是Be动词,是不是一定要用were? it is time that 句型中跟过去式,当动词是be动词时,过去式用was还是were? 在虚拟语气it is (high)time that句型中 从句谓语动词一定要用过去式吗? It is high time that something were done upon it It is high time that something were done upon it. 1.It's high time that something were done upon it.为什么是用were? it is high time that . it is high time that +should do 与it is high time that +did的区 It is time(high time)that . It is/was .that 句型,在be动词后如果跟的是名词和名词词组就是定语从句吗 如果是介词和短语和副词? it is high time后面加什么形式的动词 用it is in a high time that 造个句子?