What is grammar? According to an Oxford dictionary, grammar is 'the rules in a language for changing the form of words and joining them into sentences'. In my opinion, it is very important for English learners to learn grammar.
Some people argue that it is not necessary for English learners to learn grammar, because native speakers never do so. I disagree with this view. The reason is because English learners normally do not have the type of background or environment that native speakers do - they speak, read, write and think in English and listen to English since they are very young. In other words, they live in an 'English' environment and English is part of their lives. Most learners, on the other hand, do not have such an advantage. Therefore, unless learners have an 'English' environment, it is extremely important for them to learn grammar.
Learning grammar makes the process of English learning a whole lot easier. For example, how are verb forms like 'write', 'wrote', 'written' and 'writing' used to formed tenses? If you know the rules of grammar well, you will be able to answer the question easily.
If you do not know grammar rules, it is possible for you to figure out how verb forms are used to form tenses? Yes, it is still possible, through regular or constant practice. The problem is, it takes much longer for an average learner to understand how they are used this way. But, if you specifically learn about the rules on how they are used, it would be much easier and quicker for you get the whole picture. It is even better if you learn the rules and apply them in practice.
In my teaching career, I have come across students who have a sound knowledge of grammar but they face a lot of problems when it comes to writing. To put it in another way, they have problems with sentence structure. If you have problems with sentence structure, they can usually be solved through plenty of reading. It is an activity which will help you tremendously if you wish to master the sentence structure of the English Language. I have written a blog on the benefits of reading. If you have not already read it, you can do so by clicking the link below:Reading does matter
Good luck to everyone.