it is time that we should do something for our country.关系词为何

it is time that we should do something for our country.关系词为何 It is something we like to do in our free time just for the “It is something we like to do in our time just for the fun It is a ____________(please) to do something for our country 英语句式时态分析?It is (about/high)time that + 从句（过去式）/should do.为何+ That is not the way ＿＿ I do it.空格填什么关系词?为什么? It is time to do something.和It is time for something.有什么区别 It is time for something.和It is time to do something.有什么区别? It is high time that we should do有这种用法吗 这It is high time that we should do有这种用法吗 We are suppose to study hard to do something for our country You should do something to _____ famous in our country.