Learning English Grammer is not easy but still ur text book will help u a lot,also u can read english news paper,it helps a lot,the best one for me was watching english news channels it really helps,as these channels uses catchy lines which are very easy to learn and speak,also u can repeat the lines after them,and u will become fluent in english grammer.

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To make a sentence-
First write the subject
then helping verb
and then main verb
Example-      He    is   playing
              (subject)(h.v)(main v.)