英语疑难问题TheroadwaslinedonbothsidesbysmallhousesThestreetswerelinedonbothsideswithpeople第一句为什么用by,第二句为什么用with?

　　英语疑难问题

　　Theroadwaslinedonbothsidesbysmallhouses

　　Thestreetswerelinedonbothsideswithpeople

　　第一句为什么用by,第二句为什么用with?