it's time to do something. 是做.的时候了.
所以这句可以翻译为：吃饭时间到啦.
如果要强调,可以加个high,
it's high time to do something.该是做.的时候了(要抓紧哦)
还有加从句的句型.
it's time sb. (should) do something. 基中 should是可选的,但是do一定要用动词原形.从句是虚拟语句句型.
如:it's high time John clean up the house.约翰该清理一下房间了.