hi , I have question about the difference between . He know and He Knows
and which once is correct . Sometime I read He know and some time I read He knows . Both correct or not ?
As stand-alone sentences He knows is correct and He know is not correct.
He know can be part of a longer sentence, e.g. Does he know too?

We, I, They + Object-----> Prular Subject
He,She, It + Verb(es) + Object -----> Singular subject