英语语法,求指导!

问题描述:

英语语法,求指导!
By comparison,listings in the US have raised $51bn thi year,while $43bn has been raised in the UK in initial public offerings.句中has 为什么?$43bn 是不是该念成43 billion dollars?

has用法是正确的,这里43billion dollars是一个整体,是一个三单的形式,后面的读法也是正确的.