Please check my grammar

My son’s an engineer. He works at a factory. He knows French and German. He learns English and is doing very well. He has his English in the morning. He's always in time for the lessons. In the evening he does his homework. He often translates sentences from Russian into English. He often reads English magazines and newspapers at home. He likes English classes very much.

Your grammar is perfect but your essay very boring and not natural.  

A native speaker might write something like this: 

My son's an enginner at a factory.  He knows French and German but is still learning English.  He is doing well in his class which he attends in the morning.  Always on time; does  his homework in the evenings and translates Russian into English.  Often at home, he reads English magazines and newspapers.  He likes his English class very much.

Please check my grammar

My son’s an engineer. He works at a factory. He knows already speaks French and German, but also He learns studies English and is doing very well. He has his English classes in the morning. He’s always in time for the lessons. In the evening he does his homework. He often translates sentences from Russian into English, and He often reads English magazines and newspapers at home. He likes English classes very much.

<em>Way too many 'He...' sentences - not ungrammatical but grating. Since you asked for grammar review only, I won't make style corrections except where I cannot resist it! haha</em> 

Please check my grammar

My son is an engineer. He works in a factory. He knows French and German. He learns English and is doing very well. He has an English class in the morning. He’s always on time for the lessons. He does his homework in the evening. He often translates sentences from Russian into English. He often reads English magazines and newspapers at home. He likes English classes very much.