2
11
a great many
很多
There are a great many people who are unemployed.
有很多人失业了。
12
a group of
一群，一组
A group of tourists was waiting at the station.
一群游客在车站等候。
13
a kind of
一种
This plant is a kind of daisy.
这种植物是菊花的一种。
14
a little
一点儿
I'm a little tired, but I'll manage.
我有点累，但我会应付的。
15
a lot of
很多
She has a lot of friends.
她有很多朋友。
16
a matter of
关于
It's just a matter of time before the truth comes out.
真相暴露只是时间问题。
17
a piece of
一块，一片
She gave me a piece of paper.
她给了我一张纸。
18
a series of
一系列
We have planned a series of events for the weekend.
我们计划了一系列周末活动。
19
a set of
一套
I need to buy a new set of dishes for the kitchen.
我需要为厨房买一套新的餐具。
20
a type of
一种类型的
This bird is a type of finch.
这种鸟是雀类的一种。