So - Neither - Either
English Grammar Rules
SO is used to show agreement with positive statements.
SO + Auxiliary/Be + Subject (pronoun)
The Auxiliary (or To Be/Have) needs to agree with the verb tense in the original statement.
It is similar to using TOO at the end of a sentence.
|Person A||Person B|
|I am happy.||So am I.||= I am happy too.|
|I'm going to Brazil in the summer.||So am I.||= I am going to Brazil too.|
|You look nice today.||So do you.||= You look nice too.|
|Stephanie has a new boyfriend.||So does Mary.||= Mary has a new one too.|
|We went to the concert last night.||So did I.||= I went to the concert too.|
|I would love a coffee right now.||So would I.||= I would love a coffee too.|
|He will win a prize.||So will I.||= I will win one too.|
|They have finished their homework.||So have I.||= I have finished too.|
|I can speak two languages.||So can I.||= I can speak two too.|
|He should study more.||So should I.||= I should study more too.|
|We could see the mountains.||So could we.||= We could see them too.|
|My brother had eaten too much.||So had I.||= I had eaten too much too.|
Sometimes you can use So + Auxiliary + Subject as a continuation of the first part of the sentence.
- John can sing well and so can his brother.
(= John can sing will and his brother can sing well too)
Neither is used to show agreement with negative statements.
Neither + Auxiliary + Subject (pronoun)
The Auxiliary needs to agree with the verb tense in the original statement.
It is similar to using either at the end of a sentence, although Neither is more commonly used, especially in spoken English.
A: I don't understand Spanish.
B: Neither do I. (= I don't understand Spanish either.)
A: I cannot swim.
B: Neither can I. (= I can't swim either.)
Sometimes people respond Me Neither instead of Neither + Auxiliary + Subject though this is very informal spoken English.
|Person A||Person B|
|I am not hungry.||Neither am I.||= I'm not hungry either.|
|I'm not going to quit.||Neither am I.||= I'm not going to quit either.|
|They don't speak French.||Neither do I.||= I don't speak French either.|
|Stephanie doesn't eat meat.||Neither does Mary.||= Mary doesn't eat meat either.|
|Mary didn't go to the party.||Neither did I.||= I didn't go either.|
|I wouldn't like to do his job.||Neither would I.||= I wouldn't like to do it either.|
|He won't stop talking.||Neither will you.||= You won't stop either.|
|You haven't finished your meal.||Neither have you.||= You haven't finished either.|
|I can't reach the top shelf.||Neither can I.||= I can't reach it either.|
|You shouldn't talk in the movie.||Neither should you.||= You shouldn't talk either.|
|We couldn't hear him.||Neither could we.||= We couldn't hear him either.|
|I hadn't seen her before.||Neither had I.||= I hadn't seen her before either.|
Try our interactive game to practice the difference between these words at: So - Neither - Either.
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