This is nice, 文青。
This is a good example of the subtle difference between a good pronunciation and a perfect native pronunciation.
The Chinese guy's pronunciation is not bad already,even Rachel says that at the end, but there are still that many words are a little off.
So, when correcting your pronunciation, slow down. Even just one word, ok, say, just this word, "word". when you practice, if the sound comes out from your mouth doesn't sound the same as that of a native speaker. Find out why, ask someone, or watch some videos. Then work on it, ...slowly.
Try to pronounce,"Word", try to feel how you curl up you tongue, slowly, ... making that "r" sound. If it is off. Try it again, feel your tongue, let it curl up, slowly. When you feel it starts getting "off track" again, stop. Try to move your tongue or muscle a little differently, to see if it sounds better. Experiment on it, do this until you get a perfect, or at least almost perfect pronunciation as what Rachel describes. Once you get it, don't get too exicited yet, I know you will. But instead, do this, remember this feel/position,OF YOUR TONGUE and MUSCLE, then do it again and again to stengthen it until you can COMFORTABLY reproduce this native sound. Then you can get excited and take a break.
This is how you will be able to correct the pronunciation of a word. This might take you a week or two or even a month to get one word,vowel or consonant done(like native). However, once you have done it for the first time, the next time would be easier so this process will be shorter every time you "conquer" a new phoneme.
Hope this helps other people who has similar experiences.
