Some important terms to improve your grammar:- 

 1) To improve its grammar as early as possible read all rules of grammar very carefully.

 2) Identify the correct tense of the sentence and after that translate it into english . 

 3) Tense play an important role to learning english speaking fastly and easy. 

 4) All the stories are represent into past tense so past tense is the most important tense to speaking english. 

5) Remember all the basic rules of english grammar such as noun, pronoun, tense, sentence, adjective etc.  

6) Solve a exercise everyday to improve basic grammar.

7) If you will try to speak english with your friend who know english very well it will also help you . 

8) Practise is the most important for understanding basic rule in grammar. 

9) if you will belive itsself, you can speak.