To make most verbs third person, simply add an "S" at the end.
 Add an -s to each of these verbs:
We visit them regularly. -> 1) He  them on Saturdays.
They speak Russian. -> 2) She  French.
I hope so.-> 3) He  so.
They date each other.-> 4) She  him.
We learn slang in class.-> 5) He  slang words too.
For verbs that end in -ch, -sh, -s, -x, and -z, you must add "ES" to make them third person.
Add an -es to each of these verbs:
They wash the dishes every night. -> 1) He  the dishes every night too.
Spiders catch flies. -> 2) A frog  flies too.
I always pass the salt to my father. -> 3) He always  the salt to my brother.
They watch TV at night. -> 4) She  TV at night too.
We fax business proposals every day. -> 5) The secretary  proposals too.