[b] Introduced of compound sentences:

[vustudents]

A compound sentences has at least two finite verbs
and two clauses joined by co-ordinate conjunctions,
i.e, and ,and,but,for,either...or,neither...nor, etc.
The clauses of a compound sentences are co-ordinate
clauses and each of these is an independent clause
expressing a complete idea.a compound sentences can
be broken into two or more simple sentences.

I am going to multan today and(I) shall return tomorrow
This compound sentences has two co-ordinate clauses
joined by and.
we can write it in the from of two simple sentences.
I am going to multan today

I shall return tomorrow