What is the difference between intensive verbs and extensive ones?could you please give examples in sentences?

Intensive verbs(or linking or copular verbs) are verbs that describe and focus on one

thing : the subject (hence the name intensive). They are followed by a noun,noun phrase, adjective, or a prepositional phrase. Examples:

- She is sleepy.

- They seem nice people.

- The boys are in the kitchen.

Extensive verbs are most other verbs that do not have a subject complement. They focus on a wider area extending far beyond and taking information away from the subject. Examples:

- She sings beautifully.

- Ahmad sells mobile phones.

1. An "intensive verb" – usually called a linking verb or a copular verb – is one which is used to describe its subject. Examples are verbs like be, seem, appear, look, become.

2. An "extensive verb" is all the other verbs. The verb goes out – extends itself – away from the subject. It describes the actions or the activities of the subject, in sentences like Mary met the president.

An "intensive verb" – usually called a linking verb or a copular verb – is one which is used to describe its subject. Examples are verbs like be, seem, appear, look, become.After the verb we can use a noun or noun phrase, an adjective, or a prepositional phrase as a subject complement in sentences like these:Jack is the president.Jack looks tired.Jack is in his office."Intensive" in this case means to focus in, intensely, on one thing: the subject.An "extensive verb" is all the other verbs. The verb goes out – extends itself – away from the subject. It describes the actions or the activities of the subject, in sentences like these: Mary met the president.Mary knows the answer.Mary lives near me.An extensive verb does not have a subject complement. It may have an object."Intensive verb" and "extensive verb" are not the usual terms we use. They come from the linguistic theories of M A K Halliday, an Australian linguist of the 1960s and 1970s.

I agree with specialties answers. Thanks. 

Apologized for the answer, leave the answer for the professionals.