介词on (上面 (某物以另一物为支撑 (具象：位置 (she was on her feet. 她站起来了), 抽象：靠...维持 (she…
she was on her feet.
she lives on vegetable.
I cut my hand on a piece of glass.
The people in the south live on rice.
My parents are on a long trip.
It is on the left.
Professor Li will give us a talk on traveling in America.
The house next to mine was on fire.
she picks on every detail.
Theory must be based on practice.
The train arrived on time.
she did it on purpose.
I've come here on business.
the dinner is on me.
The workers were on strike.
Grapes from Sinkiang are on sale.