发音
双唇成圆形, 稍向前突出
舌尖不触下齿,发短促音[ u ]

单词
bull full pull
push bush put
hood good foot
book cook look
brook crook rook
wood wool whoops
could would should
pudding sugar bullet

句子
The look is good.
The bull is pulled.
I will buy the cook book.
The pudding is full of sugar.
The woman would buy the cushion.

辩音
[u] [u:]
full fool
pull pool
soot suit
stood stewed
cook kook