He becomes a very valuable person. (Exclamatory) (Change the sentence)

English is not a native language. (Affirmative) = English is a foreign language. 

Without learning English we cannot hope to get any good job. (Complex) = If we do not learn English, we cannot hope to get any good job. 

The man who knows English well, can go abroad. (Simple) = The man knowing English well can go abroad. 

You must learn English. (Negative) = You cannot but learn English. 

Everybody knows this truth. (Imperative) = Let everybody know this truth. 

Our students are going to practice English more and more. (Passive) = English is going to be practiced more and more by our students.