Because I'm the best there is at what I do.请帮我讲解一下这句话的结构,

I`m the best!中文! Because I'm the best there is at what I do.请帮我讲解一下这句话的结构, I'm_(确信)I'm the best I'm the best中的best前为何加the I,m the best ,isn,t it? Best case scenario:I love myself ; I enjoy living ; I smile because I’m happy not because I have to. I like ____ the best. Because i can _____ in the water. I'm the best colour of the world . I'm the best colour of the rainbow family. I'm the best friend of the children . I'm the best looking boy in the world I'm not the best,but the only one I'm hurt!Because I fell from the heaven!翻译 I will try my best to change myself and I think I can,because the gril who I I'm alone now because I lost my best friend.Can you tell me what I should do for it? I love you because you bring the best out of me? she always says to _______(she),“i‘m the best.” I'm not the person who you love best