英语名词表语

大家都熟知,英语的名词作表语,通常表示主语的类属和身份,例如: China is a socialist country. She is an English teacher. That one over there is our dormitory. 但是,我们也偶尔看到,有些名词(主要是抽象名词),虽处于表语的位置,并不表示主语的类属和身份。请看: The two boys are the same weight.这两个孩子体重一样。The building is concrete.