I have bought the bike和I have bought the bike for two years,

I have bought the bike和I have bought the bike for two years, I have bought the bike for two years.此句有错吗? I bought the bike three years before和I have seen the film ag I bought the bike two years ago.(同义句) I have bought the computer for two years.怎么改? I bought the bike two years ago.=_____ _____ two years _____ 怎样理解I have had the bike for two years/since two years ago中的h I have already bought the book for about two years.这句话错在哪里? I have bought two _ for the coming Chritmas party I have had the bike for ten years. I___(buy) the bike two weeks ago .I ___(have) the bike for t I have already bought a bike.(改为否定句)