So do I, neither do I – so, neither plus auxiliaries



This is definitely a difficult topic. I have never heard any of my Vietnamese friends using properly this form of response properly.  However, there are also other, perhaps easier forms available.

You say: “I love English”.
I say: “So do I” or “Me, too” (more informal and much more common).

You say: “I went to the cinema last Sunday”.
I say: “So did I” or “Me, too”.

You say: “I am not American”.
I say: “Neither amI” or “Not me either”/”Me neither” (more informal and much more common).

You say: “I can’t fly”.
I say: “Neither can I” or “Not me either”/”Me neither” (more informal and much more common).




You say: “I have been to Vietnam”.
I say: “So have I” or “Me, too”.

You say: “I wouldn’t like to go to there”.
I say: “Neither would I” or “Not me either”/”Me neither” (more informal and much more common).

Use so do I / neither do I etc. to say that you have something in common with somebody. (I am a teacher. So am I ….. Don’t say: So I am.). Format: So/neither + Auxiliary (from the start-up sentence + Person (can be any, not only ‘I’; if there’s no auxiliary, just a normal, lexical verb, use ‘do/did’).  “So” is used in a positive sentence and “neither” is used in a negative sentence (take a look at the examples above).

Note: The auxiliary you use in your response depends on the tense used in the sentence you are responding to. Take a look at the second example; “I went to the cinema last Sunday.” – Past Tense. The auxiliary in your response has to be in Past Tense (“So did I”).

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