我升中五，完全唔識英文，想DSE拎2。

If you want a grade2 you're interested in Eng.culture, can get a certificate of Proficiency,can enchance your qualification, then you'll be interested to read well.
Try get a tutor on a one-to-one basis,then join a large tutorial course.to make you believe you really understand Eng.
I suggest you can read the newspaper every mornng;or read a stated amount of knowledge gained from textbook.
To read aloud for others to hear,or nobody, for 15 minutes.Listen at same time.Write something down .
Try to obtain and use the information from a computer storage system. The disk drive reads data from the disk into the computer's memory.
Read and learnt from you-tube is both interesting and enjoyable to.
Then you can study a subject at u, reading history/law/tourism/literature/buz etc.
Then you accept something as true or right without the need to talk about it; take something as read from u-2 in English.Best of wishes.

2015-06-30 17:28:25 補充：
After google translation u look hard with the eyes-,mind moving around in Great English Grammar Google-eyed with English Grammar standing out as if God knows !

我覺得你應先找個私人補習老師惡補後再去補習社的雞精班,如果直接去補習社可能你會唔明.

有時比D錢去搵D 雞精補習班係好既,
你比一次雞精錢好過你再讀多次,
浪費一年既青春同錢