Part 1
The Core Rule
Singular subject + singular verb
If the subject means one person, place, thing, or idea, the present-tense verb usually takes s or es.
The boy reads every evening.
boy = one, so reads
A good teacher explains slowly.
teacher = one, so explains
The story begins in a village.
story = one, so begins
Plural subject + plural verb
If the subject means more than one, the present-tense verb usually does not take s or es.
The boys read every evening.
boys = many, so read
Good teachers explain slowly.
teachers = many, so explain
The stories begin in a village.
stories = many, so begin
Do not match the object
The verb agrees with the subject, not the noun that comes after the verb.
The box contains old letters.
box is the subject, not letters
The letters contain old secrets.
letters is the subject
A list of books is on the desk.
list is singular; books is only inside a phrase
10 example practice bank
More examples for The Core Rule
Read the sentence, find the real subject, then check why the verb works.
The lamp glows in the corner.
lamp = one, so glows
The lamps glow in the corner.
lamps = many, so glow
My answer seems correct.
answer = one, so seems
Their answers seem correct.
answers = many, so seem
The basket holds three apples.
basket is the subject, not apples
The apples fill the basket.
apples is the subject
A collection of stamps belongs to Nia.
collection = one set, so belongs
The stamps in the album belong to Nia.
stamps = many, so belong
One chapter explains the rule.
chapter = one, so explains
Five chapters explain the rule.
chapters = many, so explain