thesesmallbusinesses（）（benefit）greatlyfromthefallininterestratesinthepastfewyears.括号里用benefit的正确形式填空!答案是havebenefited.为什么不用被动语态?

Question

these small businesses （ ）（benefit）greatly from the fall in interest rates in the past few years.括号里用benefit的正确形式填空!
答案是have benefited.为什么不用被动语态?

Answer 1

benefit常与from,by连用,是“获益；得益于”的意思,不用被动.
例如：
The plants benefited from the rain.
植物得益于这场雨.
We benefit from daily exercises.
我们得益于每天做操.