仲有如果想改善oral既話, 睇多d tvb pearl都好嫁! 我以前都好鍾意睇american's next top model, malcom in the middle咁...但malcom in the middle好似冇得做lu~睇既時候除左睇劇情之外, 仲可以留意下佢地講野既style, 例如邊度高音d, 低音d咁...學下d外國人講野~做到抑揚頓挫既效果!
至於寫果方面, grammar呢d野有d真係一定要背嫁...好似 to 之後係infinity, like之後最好加ing等...其他呢就要睇多d英文書喇!
To polish up your English skills, my suggestion is simply to read as much as you can.
Eventually, you will have confidence in writing and have your writing devoid of grammatical mistakes.