Commas
Apostrophes
Subject-verb agreement
Commonly confused words
?
100
The sky was dark and cloudy but the sun was still out.
The sky was dark and cloudy, but the sun was still out.
100
Surely (your, you're) not leaving yet.
you're
100
This collection of poems (look, looks) interesting.
looks
100
(Their, There, They're) going to the amusement park tomorrow.
They're
100
Fish as far as we know breathe only underwater.
Fish, as far as we know, breathe only underwater.
200
The books were informative but I learned even more in my science class.
The books were informative, but I learned even more in my science class.
200
The (teacher's, teachers') desk is bigger than mine.
teacher's
200
Each of those jackets (cost, costs) too much.
costs
200
Alex was (to, too) excited to sleep.
too
200
The dog chewed on (its, it's) squeaky toy.
its
300
If you study for the test you will do much better.
If you study for the test, you will do much better.
300
I am always careful to follow my (moms, mom's, moms') advice.
mom's
300
The rash on her hands (is, are) probably poison ivy.
is
300
The sugar had a negative (affect, effect) on the science experiment.
effect
300
Mrs. Yelverton is the (principle, principal) of GMS.
principal
400
We played games while the adults sat and talked.
We played games while the adults sat and talked.
400
My (dogs, dog's, dogs') were asleep when I got home.
dogs
400
Every one of the actors (need, needs) another rehearsal.
needs
400
The disappearing penny was simply an optical (allusion, illusion).
illusion
400
Because it was dark out I grabbed my flashlight.
Because it was dark out, I grabbed my flashlight.
500
After Heather sorted the laundry she realized she needed detergent.
After Heather sorted the laundry, she realized she needed detergent.
500
All of the (teachers, teacher's, teachers') cars had flat tires.
teachers'
500
Kathy, along with her sister, (has, have) chicken pox.
has
500
I (here, hear) that you've won a trip to Europe.
hear
500
I have seen (a lot, alot) of horror movies.
a lot