a broad，range of修飾什麼名詞

既可以修飾可數名詞也可以修飾不可數名詞:

它的含義是:大量的

如: I have a broad range of words.

I know a lot of words. 

I own a broad range of land

I own a lot of land. 

用單數者，說明主語的中心詞是 a range 或 a group，而後面的of 短語，作定語修飾range 或group。

用複數者，說明主語的中心詞是of 後面的那個複數名詞。而把a range of 或 a group of 整體看作限定語，修飾後面的名詞

1、 A wide range of colours and patterns are available.

a wide range of修飾後面的名詞 句意為很多可以選擇的 所以是複數

2、 A broad range of issues was discussed.

3、 If a group or range of things is diverse， it is made up of a wide of variety of things.

range是主語之一  單數

4、 A fairly narrow range of people are responsible for key decisions.

同句一 a fairly narrow range of為修飾 句意為很少一部分人 複數