How to distinguish predicates from non-predicates?

1. Predicate verbs can be used as predicates alone in sentences, while non-predicate verbs cannot be used as predicates alone.

Tom teaches us English.

Tom teaches us English. (teach? Verb as predicate)

Mr. Gavin came to our classroom last week and talked with us.

Mr. Gavin came to our classroom last week to talk with us. ? (Talk about ...? Infinitive as adverbial)

2. Predicate verbs are limited by the person and number of the subject, while non-predicate verbs are not.

Mary likes pop music.

Mary likes pop music. ? (verb in singular third person form)

Mary has nothing to do today.

Mary has nothing to do today. (do? In the prototype)

3. Predicates are different from non-predicates. Predicate mainly embodies sixteen basic tenses (including passive), while non-predicate has only three fixed forms (passive and complete) to do, do and complete.

Like what? Has he finished reading? .

He finished reading these novels.

It's over? Is it a predicate verb, the tense is the simple past tense, reading? What do you do in non-predicate verbs? Form.

Extended data

Related differences of non-predicate verbs: the difference between infinitive and gerund as subjects

1, gerund as subject often indicates ordinary and general behavior, infinitive as subject often indicates specific behavior. When the infinitive (or infinitive phrase) is used as the subject, it is often replaced by "it", which is called the formal subject, and the real subject (infinitive) is placed at the end of the sentence.

Collection? Information? About what? Children's? Healthy? Is it? His? Work.

It is his job to collect information about children's health.

Is it? Is it necessary? Where to? Discuss? That? Question? With what? Ann? Experienced? Teacher.

It is necessary to discuss this problem with an experienced teacher.

2. The sentence patterns with infinitive as the subject are:

1 yes? Difficult? (important, necessary) for? Someone (short for someone)? Where to? do ...

2 yes? Kind? (kind, friendly, polite, careless, rude, cruel, smart, stupid, brave)? Someone (short for someone)? Where to? do ...

3, commonly used gerund as the subject of sentence patterns are:

1 yes? No? Okay？ (use, fun) to do ...

② It？ Is it? Answer? Waste? Yes? What is time doing? ...