a.of词组有哪些?
问题描述：
a.of词组有哪些?
如果给出答案,我会给分数的
答
a piece of 一块（片）
a kind of 一种
a tuft of (hair,feathers,grass,etc.)
a skein of (yarn,thread,etc.)
a hank of (wool,silk,etc.)
a bob of (silk,hair,etc.)
a bowl of 一碗
a glass of
a cup of
a lot of
a type of
a number of