Third person : Do not forget to put " s " to the verb.
when any sentence has an " s " in the verb are talking about third person ( it is used with : she , he, it).
spot on. i eat, you eat, she eats. i scream, you scream, we all scream for ice cream (she/he screams)
Except modal verbs: she/he/it may/might/can/could/shall/should/will/would/must/ought.
present tense only, and not if a modal verb is used in the sentence. he goes, but he can go, does he go, he doesn't go, he will go.