I shall never forget it

I shall never forget it it is an experience I shall never forget and shall value for I'll never forget it and i never forget it You have saved my life;I shall never forget it.为什么用have不用had You have saved my life;I shall never forget I shall never forget those years____I lived on the farm____y when will we die?i shall never forget... something I will never forget it the moment that I never forget it ：） I will never forget it． I shall never forget the day.这句话对吗?还是把shall never 换成don't al I shall never forget the day in which I joined the league