如果在高中裡，真正有效地學好英文

To be honest, you have to do a lot of past papers, after doing it, you still have to learn from the mistakes that you made, if you do not understand, you can ask your teachers, Moreover, you should try to read a passage aloud every day so as to improve your pronunciation, if you don't know how to pronounce the word, you should ask the teachers, then, you have to do a newspaper cutting every week. Even if the teacher did not have the time to mark it for you, you still have to write some comments so as to improve yor fluency in writing.

你的文法,標點改下吧

試試看這個看英文短片的網站, 有中英對照, 以及英美政治家的演講, 你可以從最簡單的開始, 慢慢地就聽得越來越多了.
看YouTube學英文
http://www.wretch.cc/blog/YYteacher