Tom’s life a period until now.请问a period until now怎么理解呢?有例句吗,谢谢啦~~

Tom’s life a period until now.请问a period until now怎么理解呢?有例句吗,谢谢啦~~ Time spent at a university is a most worthwhile period in a young person's life.This is a time whe翻译 英语翻译The way of life that a group of people builds up over a long period of time becomes the people's culture stage period of life,人生的阶段.请问是在stage后面加s,还是在period后面? Thus in American society,which labels both youth and retirement the golden age,which can beconsidered a better period of one's life? what's the difference between'over a period of time'and 'during a period of time'? Tom’s double life还是the double life of Tom 哪种说法正确呢 I guess It's just a lonely period... The time when I first met Nelson Mandela was a very difficult period of my life. Who's that?A It's Tom BThis is Tom Where's ______?A.Tom's pants B.Tom's pen's C.Tom's pen D.pen of Tom 宋岳庭有一首Life‘s A Struggle , life s a struggle 歌词 A Showman's Life 歌词 miss a period of A period of five it's + a period of time + before/since 的区别?it's + a period of time + before... 与 “it's + a period of time since...”的区别是什么?什么时候用 since 什么时候用 before This desk is_________.A.Tom and kateB.Tom's and Kate'sD.Tom's and KateC.Tom and Kate's