So do I !! Neither do I !!
agreeing I like ice-cream. So do I. I’m wearing jeans. So am I. I can swim. So can I. I went out. So did I.
I don’t like working. Neither do I. I can’t drive. Neither can I. I haven’t been to Paris. Neither have I.
neither = not … either
disagreeing I don’t like Mary. I do. We’re going now. We aren’t. I can speak Polish. I can’t. I haven’t been skiing. I have.
I like blue cheese. I don’t. I saw Pat yesterday. I didn’t. I’m going to have some coffee. I’m not.