So and neither – so am I, neither do I, etc.

So-too, neither-either – Grammar charts

So do I – so, neither

Neither do I – so, neither

A is or does the same as B

To say that A is or does the same as B, we can use so + auxiliary verb + subject in affirmative sentences and neither + auxiliary verb + subject in negative sentences.

What auxiliary verb do we need?

After so/neither we use the same auxiliary or modal verb as in the first sentence: be, do, have, can, will, must, etc.

When there isn’t an auxiliary or modal verb in the first sentence, we use do/does in the present and did in the past.

Nor = neither

We can use nor instead of neither.

Neither is negative

Neither/nor is a negative word, like not. For this reason, the auxiliary verb after neither should be affirmative.

 

Too, either

Another way of saying that A is or does the same as B, is the use of too or either at the end of the sentence. We use too for affirmative sentences and either for negative sentences.