2、+物质名词=bemade/builtof例:Thebridgeisofstone=Thebridgeisbuiltofstone.这座桥是石头砌成的。Manythingstodayareofplastics=Manythingstodayaremadeofplastics.今天有许多东西都是塑料做的。3、beof+集合名词=belongto例如:Workers and peasants are of one family=workers and peasants belongs to one family. 工农是一家 We are of the same
3、class=we belong to the same class 我们是同一个班的同学 4、be of +the+形容词最高级+复数名词=be one of +the+形容词最高级+复数名词。例如:He is the shortest puipils in ourclass=Heisoneoftheshortestpupilsinourclass.他是我们班级里个子矮的学生之一。5、beof+one’s+动名词表示某人亲自做某事。例如:Thedishisofmy(own)cooking.这道菜是我亲自烧的Isthisthetreeofyourplanting?