Question

define simple,compound,and complex sentences

Answer 1

simple sentence are mainly short and have a subject verb combination. compound sentence are sentences which are joined by coordinating conjunctions. and compond sentences are sentences made using several subordinating conjunctions.
hope it helps

Answer 2

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Simple sentence:-

A simple sentence has the most basic element that make it a sentence: a subject, a Verb, and a complete thought.

$\rm \blue{Complex \: sentence:-}$

A sentence containing a subordinate clause or clauses....

$\rm{Compound \: sentence:-}$

A sentence with more than one subject or predicate.