What is the meaning of Sentence structure?

TYPES OF SENTENCES ACCORDING

TO STRUCTURE:

CLASSIFICATION (SORTS) OF SENTENCES

1.

A simple sentence:

A sentence that contains one independent clause and no subordinate clause.

I bought some books yesterday. Pakistan exports rice.

Students, teachers, and the Principal of our college went on a picnic by bus early in the morning. (one verb/one thought)

2.

A compound sentence:

A sentence that contains two independent clauses of equal rank. (These clauses are generally joined with a comma and a co-ordinating conjunction- and, but, nor, or, for, and yet.)

Man is guided by reason, and beast by instinct.

She normally lives here, but she goes to Murree in summer.

He didn’t write me a letter, nor did he come to see me.

3.

A complex sentence:

It contains one independent clause and one or more dependent (subordinate) clauses.

I know that you are a student.

The man

who was sitting under the tree was watching us.

He told us

that he could not buy stamps because they were out of stock.

I saw her when she arrived.

Where ignorance is bliss,

it is folly to be wise

.

Clauses in Bold

are main and underlined are subordinate)

4.

A compound-complex sentence:

A sentence consisting of two or more independent clauses and one or more subordinate clauses.

We saw a family of elephants, but they didn’t notice our presence

because we were hiding behind bushes.

While we were crossing the river,

we looked into the clear water and saw a huge fish, that was swimming towards us. (An extract from: Gondal English Grammar & Composition For Degree Classes. By Prof. Muhammad Aslam Gondal)