Before we talk about tip, The most important need to think is how much your understand of English. Why? Because, Learn a language is not only learn about grammar and the others. But, You must THINK, TALK, SPEAK and READ in english also.
From elementary to collage, You have learnt about sctructure and grammar. But, Why, it's feel so hard? That because We only memorize it but lack of understanding and accustom talk in daily life.
Toefl test needs your skill in listening, sctructure, reading, speaking and writing. I think, you can also improve your ability with your self. Surely, With your basic skill from what you've got in elementary until collage.
I have simple tips to improve your score and i will devide to 4 section :
- Listening : You have to often watch movie in english (whether in british accent or american accent) without subtitles. Try to find out how much percent your understanding from conversation in that movie.
- Reading : There is no other ways besides , you have to read literature or reading material in english. Not Have to with text book or others, but you can start with light reading material, for example : Magazine, Newspaper and Tutorial in english. Every Time you practice, Do estimation, how much your understanding from that reading material.
For Vocabulary : You can start with making list words that you don't know from what you've read. After that, Don't open dictionary immediately. Try to guess it first. if you get stumbled, you can open dictionary.
- Structure : Structure or Grammar in english is difficult enough. It is need hard struggle. Because, eventhough we've learned grammar from junior high school to collage. but for part people grammar still difficult. The only thing you need to do is you have to be patient and serious to master it.
- Speaking : Create english day twice a week. But Talking in english is easy and so simple. As long as you are confident in it. You need to make it as as habit, otherwise, you'll never be able to have a good command on english language.
Last Tips, You must learn about material test seriously, even from book or enroll to course. Believe me, You should keep learn english although you've already confident with your skill in english.