In five sentence patterns in English, subject, predicate, object and double object are all sex words that complement the object. For example, what part of speech do most subjects have?

There are nouns (such as boy), nominative pronouns (such as I), numerals, infinitives, gerunds, clauses and so on.

The predicate can be an intransitive verb (vi. ) without an object, forming a subject-predicate structure. It can also be a transitive verb. ) Be sure to add an object after it. Predicates must Be verbal, so verbs such as be verbs and transitive verbs vt. And intransitive verb vi are used as predicates.

When Be verb is used as predicate verb, the structure of subject +Be verb+object is the main system table structure. The object in the cardinality table structure is usually adjective adj.

The object or double object depends on the predicate. It can be a noun, a noun phrase, an adjective or a clause.

Predicate: it can be a noun, a noun phrase, an adjective, or it can form a system table structure with a series of verbs.