First speakerpositive negative

Repl

y posi

tive

object pronoun + tooOR

So + positive auxiliary + subject pronoun.

A: I like chocolate.B: Me too. / So do I.

A: I can swim.B: Me too. / So can I.

subject pronoun + positive auxiliary

A: I don’t like chocolate.B: I do.

A: I’ve never been to America.B: I have.

nega

tive

subject pronoun + negative auxiliary

A: I like chocolate.B: I don’t.

A: I’m going to the party tonight.B: I’m not.

object pronoun + neitherOR

Neither + positive auxiliary + subject pronoun

A: I don’t like chocolate.B: Me neither. / Neither do I.

A: I won’t have a drink.B: Me neither. / Neither will I.

me either (AMERICAN SPOKEN)

used when someone else has made a negative statement and you mean it is also true of you. This is considered to be incorrect by speakers of British English who would say “Me neither.”

A: I don't like horror movies.B: Me either.

Definition taken from: http://www.macmillandictionary.com/us/dictionary/american/either, 30th July 2013

By Sandy Millin