In these Tenses, Verb shows the present time without telling about completion of action but tells simply.
For simplicity, we shall take one example with three persons of singular as well as plural number.
Read these sentences.
[table “9” not found /]
It means, in present tense if we take third person and singular numbered noun as subject, we should use the verb with addition of s or es. Sentence of third person and singular number takes the Verb with addition of s.
Go over-