it is high time for you to work hard请问这句话的准确意思是?

It is high time It is high time it is high time的high是什么意思 it is high time that . it is high time for us relected everything 还是 for us to relect..这个it is high time..虚拟语气要用吗 那个不定式的对不低啊? It is time(high time)that .It is time( high time)that it is high time that的用法 It is high time you leave for Shanghai .这句话哪错了?怎么改? it is high time for you to work hard请问这句话的准确意思是? It is high time that sb.should do 其中 high it is high time to 例句：It is high time to protect the animal It is high time that they started out.他们该动身了.It is high time中high是何意?It is high time如何翻译 It is high time that something were done upon it. It is high time that something were done upon it It is time for school It is time for go it is time for ~~`~~·~~~~~~~``~~~~~~ it is time for sleeping