I tend to agree with Joey, they are teaching and preparing you for exams.

Beacuse Chinaese believe in exam more than practice

Well why not? :) Look at it this way: isn't it cool that you're being taught the language THIS profoundly? Not only it can become interesting in itself - IF you try - but in the end even the native speakers would perhaps be amazed to see a foreigner who knows something they may not know themselves (not that it is the main point, of course, but a pleasant bonus nevertheless, don'cha think? :) ).

Im a chinese student, i already learn English some years,I know you said this problem, but this is not our problem can be resolved to learn English from a teacher where the radical, or learn things are still as you stated, although the Chinese people to learn English and more proficient, but not many good at ..

what sort of sayings.... ? Pls provide some examples