Are this two sentences the same?  
1) The English language has changed over time.  
2) The English language has been changed over time.

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Also,  
which one is correct?  
1) How the English language has been changed over time?  
2) How has the English language been changed over time?  
3) How has the English language changed over time?  

Are they the same?

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I watched a video about English Language history, and a man who was native speaker said: "How has the English language changed over time?"
But, why that man didn't use the word "BEEN".  
I mean: "How has the English language **BEEN** changed over time?"