So do I / Neither do I
Educall Language Academy
We use so do I and neither do I to agree with an opinion or statement.
so + auxiliary verb + subject to agree with a positive statement:
I like apples. - So do I.
I saw this movie. - So did I.
I love English. - So do I.
They were really excited about the trip. - So were we.
neither/nor + auxiliary verb + subject to agree with a negative statement:
I don't like apples. - Neither do I. / Nor do I.
I didn't see this movie. - Neither did I. / Nor did I.
I don't like English. - Neither do I. / Nor do I.
They weren't excited about the trip at all. - Neither were we. / Nor were we.
***In spoken English we can use object pronoun + too for positive sentences or object pronoun + neither for negative sentences:
I like apples. - I like apples, too. / Me, too.
I don't like English. - I don't like English, either. / Me, neither.