Various forms of prediction:
Nouns as predicates
Africaisabigcontent。 (Zhou is the predicative in the sentence)
Africa is a continent.
Second, pronouns act as predicative.
What is your fax number?
What is your fax number?
Thirdly, adjectives are used as predicative expressions.
Ifeelmuchbettertoday。
I feel much better today.
Fourthly, numerals are used as predicative words.
She learned about it first.
She is the first person to know.
Verb (abbreviation of verb) infinitive or ing form as predicative.
Her job is selling computers.
Her job is selling computers.