文青，這課我還沒聽。所以語調說不出來什麽。應該注意的是nasal consonants。
ng我目前的水平還聽不出來毛病。
N，M 應該有鼻腔震動的感覺，你拿拇指，食指和中指觸摸鼻腔，發N，M時，感覺到震動的聲音嗎？
Lesson20:Hiking
286. My feet are sore from hiking.
287. We can rest at the top of this hill.
288. I like hiking in real wilderness.
289. Hiking is not yet popular in China.
290. The trail splits into two trails.
291. The rest of the way is downhill. 尤其感到N不到位。
292. Be careful of the slippery rocks.
293. Is your pack comfortable? l也發得不到位，像小麥熊給bingli說的，舌根下壓，舌尖頂上頜。r沒發。
294. I hate people who litter in the forest.
295. Too much noise scares the animals away.
296. How much farther do we have to go?
297. It seems like we’re been walking forever.
298. Sorry, I didn’t realize you were getting so tired. r怎麽沒發到位呢？？？
299. This view is absolutely breathtaking. Don’t you agree?
300. It’s a feeling of satisfaction that we are getting so much exercise and clean air, and see so many magnificent sights.
