The house is on offer.这所房子出售.这里的on是做什么的啊?是不是动词和名词之间得加点什么啊?那为什么加on啊?

The dish is on the house The black house is on the right of the river,Where is the white house? the blackhouse is on the left,the red house is on the right ehere is the white house The bird is singing on the t_____ of the house. The bitd is singing on the t______ of the house. The house on the The house which stands on the hill is mine. if the red house is on the right and the blue house is on the left,where is the White House? If the red house is on the right and the biue house is on the left,where is the white house? on the house ON THE HOUSE There is a house _____（work） on the ground. H_ _ The house is on fire!填空 The house is on fire and rooms are full____smoke. my house is on the five floor 改病句 This is on the outside of a house or aparment 请帮我详细地分析一下句子成分,it is no use……句型,谢谢~It is no use offering the manual laborer, tired out with a hard week's sweat and effort, the chance of playing a game of football or baseball on Saturday afternoon.其中,offe my house is on the other side of the street.同义句my house is ____ _____ the street.