Conjunctions
Commas in Conjunctions
Subject of sentence
Object of sentence
Preposition
100

She wanted ice cream, so she went to the store.

so

100

They prepared a delicious dinner for they were celebrating their anniversary.

comma before for; after dinner

100

Sarah and Emily play soccer after school.

Sarah, Emily

100

Alex bakes cookies.

cookies

100

The book is on the table.

on

200

He likes to read, but he doesn't enjoy math.

but

200

John likes to read but he doesn't enjoy math.

comma before but; after read

200

The birds sing in the trees.

birds

200

The teacher assigns homework to the students.

homework, students

200

The bird flew over the rainbow.

over

300

Emily bought a new dress and shoes, for she was going to the prom.

and, for

300

They went to Waikiki Beach but it started raining.

comma before but; after Beach

300

In the distant galaxy, stars collide in a spectacular display of light.

stars

300

The artist paints a portrait of his cat.

portrait, cat

300

The river flows through the canyon.

through

400

Eric saved up his allowance, for he wanted to buy a new bicycle and helmet.

for, and

400

I wanted to go swimming but didn't have any goggles.

no comma

400

In the enchanted forest, fairies dance under the moonlight.

fairies

400

The scientist conducts experiments in the laboratory.

experiments, laboratory

400

They hiked up the mountain beyond the tree line.

up, beyond

500

I bought a cake for Thomas yet forgot the ice cream!

yet

500
Alice and Jacob went to Local Lime for they needed tacos.

comma before for, after Lime

500

The discovery of the ancient artifact amazed historians.

discovery

500

The explorer discovers hidden treasure in the jungle.

treasure, jungle

500

The stars shimmered against the backdrop of the night sky.

against, of