Question

这道英语选择题为什么选A？麻烦详细解答下，谢谢！

When you want to introduce yourself to an american, you can just try a _____, such as "Hello,my name is ..."
A.commonly used greeting
B.used commonly greering
C.commonly using greeting
D.using commonly greeting
为什么选A呢？

Answer 1

greeting 是名词，肯定放在最后这个不用说吧
就是看前面两个修饰的定语，谁先谁后了。
used 看句子成分，used 是修饰greeting的
而commonly 则是修饰 used greeting的

Answer 2

commonly is an adverb and this adverb modifies greeting. And this greeting is used rather than unused.

Answer 3

.....commonly used greeting 用一个常用的招呼语做开头

(副词)( 被用来)