I often go to school by bus.
I often take the bus to school.
by后面直接加交通工具的名称,例:by bus/car/bike
take后面要加the/a等再加交通工具
I often go to school by bus.或I usually take buses to school
I often go to school by bus./ I often take a bus to school.
I always go to school by bus.
I often go to school by bus.