Explanation

Words like has, have, is, am, are, was, were considered to be Helping verbs. 

Explanation

The number of + singular verb

A number of + plural verb

Explanation

Explanation

We use do, does present simple to give extra force to the main verb.

Explanation

This sentence belongs to Present Perfect Tense.

Have and Has are helping verbs of Present Perfect Tense.

Third form of verb is used with have or has.

Explanation

This sentence belongs to Present Perfect Tense.

We use third form of a verb with this tense.

First form: Spend

Second form: Spent

Third form: Spent

He has spent six years in Lahore means وہ لاہور میں چھ سال گزار چکا ہے

Explanation

When a Plural Noun (A hundred rupees) denotes some specific quantity/amount considered as a whole, the Verb is generally Singular.

Explanation

Here twenty minutes shows something happened in the past.

We use Past Indefinite Tense here

We use second form of verb (left) in simple sentences of Past Indefinite Tense

Explanation

Is, am, are, was, were etc. are examples of Helping Verb. 

Explanation