充当表语的词类：

1 名词

  Your word is a lamp to my feet and a light for my path.

2 形容词（带‘的’）

  The sky is blue.

3 代词

  He is nobody.

4 数字

  Ten and eleven is twenty-one.

5 副词

  I am here.

6 介词短语

  Jesus is on the right of Father.