Compound Sentence Generator

Structure

Pattern A — Coordinating conjunction:
[Independent clause] , [conjunction] [Independent clause]

"The student studied hard, and she passed the exam."
"The teacher prepared a new activity, but the
 students had already completed it."
"The researcher found the pattern early, so she
 submitted the report before the deadline."

Pattern B — Semicolon:
[Independent clause] ; [Independent clause]

"The student reviewed her notes carefully;
 she felt confident before the examination."

Pattern C — Conjunctive adverb:
[Independent clause] ; [conjunctive adverb] ,
[Independent clause]

"The first draft was complete; however, it
 required significant revision before submission."

The comma rule

Always place a comma before the coordinating
conjunction when joining two independent clauses:

✅ "The student studied hard, and she passed."
❌ "The student studied hard and she passed."

Exception: when both clauses are very short, the comma is sometimes omitted in informal writing. In formal and academic writing, always use the comma.

The FANBOYS conjunctions

Compound sentence vs simple sentence with compound predicate

Simple (compound predicate — one subject):
"The student reads and takes notes."
(one subject: the student)

Compound (two independent clauses):
"The student reads, and she takes notes."
(two subjects: the student / she)