it was high time that . 从句要用过去完成式吗? 请赐教

it's high time that sb were还是was It is high time It is high time it is high time的high是什么意思 It is (high / about) time that.问：is可以 用was吗?It was (high / about) time that 请大师详解 It's high time that...It's high time that the voice of the people 【was heard】 in the house.句子意思?其中was heard 意思,为什么? 虚拟语气句型“it was (high)time that”请问,虚拟语气的句型“it was (high)time that”和“it is (high)time that”在句子表达的意思上有什么区别?请分别举例句说明,谢谢. it is high time that . It is high time that something was done about it.为什么要用was done 不是必须要有should It was high time that sb had done?是had done吗? it was high time that . 从句要用过去完成式吗? 请赐教 It was high time to bring matters to a bead请翻译一下 It's high time that such a practice was put an end 虚拟语气句型“it is (high)time that”中的is变成was请问：1.虚拟语气的句型“it is (high)time that”和“it was (high)time that”在句子表达的意思上有什么不同?请区别性举例,2.这个“it was (high)time that” It is time(high time)that .It is time( high time)that It is high time that sb.should do 其中 high it is high time that的用法 It's high time...的用法