发音
嘴巴张开略圆,逐渐合拢
双唇逐渐收成圆形,舌后部抬起

单词
how now owl
flour hour sour
allow cow crowd
town flower tower
round shout sound
out outcome output
doubt found house
loud mount mountain
about account around
council count discount

句子
There is an owl.
I like sour cream.
The town is crowded.
We’ve found some flour
The flowers are in the house.

同音
[aʊ]
hour our
foul fowl
flower flour
bough bow
aloud allowed
council counsel

辨音
[aʊ] [əʊ]
now know
town tone
loud load
clown clone
drown drone
couch coach
noun known