be加形容词与beof加名词例句

我的答案是：be加形容词的例句有： is so beautiful! teacher was knowledgeable! sky is y and I are happy.英语中这种主系表结构是非常广泛的。

be of加名词的例句里： is of great is of great patience.实际上，of+名词就相当于一个形容词！