英语/r/怎么发音我在一个地方看到是这样TopronounceR,openyourmouthslightly,raisethemiddleandbackofyourtonguetowardtheroofofyourmouthwithouttouchingit,andvibrateyourvocalcords.在另一个地方看到是这

　　英语/r/怎么发音

　　我在一个地方看到是这样TopronounceR,openyourmouthslightly,raisethemiddleandbackofyourtonguetowardtheroofofyourmouthwithouttouchingit,andvibrateyourvocalcords.

　　在另一个地方看到是这样（1）Roundyourlipjustalittle

　　（2）Raisethetipofthetonguetowardsthehardbumpbehindyourupperfrontteeth,BUTdon'tletyourtonguetouchthebump

　　（3）Thecenterofthetongueisalittledown

　　（4）Thebackofthetongueisraisedandpulledintoatightball

　　（5）Thesidesofyourtongueareup,justenoughtotouchtheuppersideteeth

　　为什么感觉不一样,第二个的说法似乎是中间低前后高有点儿卷,第一个是后面和中间都抬高