I've been at this school for over two years .for over two years 可不可以用since over two years age

Is this all I've been waiting Is this all I've been waiting for Is this all I've been searching for是什么意思 Is this all I've been waitting for? Is this all i've been searching for my love I've been waiting for laugh at you! I've been expecting I've been cryin Ive been to I've been filming. What's these sentences mean?Thanks!This is how I am I've been like this,I've been like this my whole life,Just leave me alone 为什么I've been like this since last week不能变成I've liked this since last week I've been at this school for over two years .for over two years 可不可以用since over two years age I’ve been knocking at the door.I don’t think anybody is in.翻译下 I've been to me I've been waiting for i've been referred to I've Been Waiting 歌词