How to Improve English  

How to Improve English
This rule is only valid for speaking. But if you are taking exams then it is essential to have good grasp over grammar rules. If you want to speak English fluently then you must not pay too much attention to grammar rules. By doing this, you will only improve your grammar rules and will slow down and get confused while speaking.
The native English speakers are not much aware about the rules and still speak English fluently. This is same with the native speakers of all languages. They just speak.