Add S, ES or IES to verbs for third person singular pronouns

There are some specific grammar rules for using third person singular pronouns. 

Read more about the definition of first, second, and third persons here – 3rd Person Singular Pronouns

When using verbs with a subject that is a third person singular, you must add “s”, “ies”, or “es” to the end of the verb.

First person singular subject is “I” and a second person singular subject is “You”.  Third person singular subjects are “he”, “she”, or “it”.

But, the rules are not as simple as they should be.  This chart helps you to understand when to add “s”, “ies”, or “es” to a verb.

For example, I can say “I work” – no “s” required to be added to the verb because the subject is a first person. However, if I say: “He works” then the subject is a third person singular so “s” must be added to the verb.

First person singular subject is “I” and a second person singular subject is “You”.  Third person singular subjects are “he”, “she”, or “it”.

When using a verb with a third person singular, for most verbs you will just add an “s”.

For verbs ending with “y” and are not preceded with a vowel, you will change the “y” to “ies”.

For verbs ending in “o”, “sh”, “tch”, “x”, or “ss” then you will change the last letters to “es”.

When using a third person singular pronoun, you must also use the correct form of Have/Has, Do/Does and Don’t/Doesn’t.

Read more here – Have/Has, Do/Does, Don’t/Doesn’t