Let me give you some examples:
1.- I'm seven years old. The predicate of this sentence is am.
-Me, too. (me too) (so this is am, not do)
2.- I walk to school naturally. (the predicate of this sentence is walk)
-Me, too. (Me too)
Me too. It means the same as others, and usually has no meaning of action. For example, when two people go to the water, A says "I want a cup of coffee" and B says "Me too", which means the same as A. 。
So do i generally means that when one person says he did something and another person says he did the same thing, he uses so do I, and the scope of use of so do I is smaller than mine.
If he says "I like apples", then I suggest you say me too.
Me too, and the difference between me too.
The first is the usage of so do I.
This structure is mainly used to show that the above situation also applies to the people or things behind. The auxiliary verb do in this structure can also be changed into is, am, are, was, was, does, did, can, could, etc. For example:
He passed the exam, so did I.
He passed the exam, and so did I.
He and I both passed the exam.
He and I both passed the exam.
He passed the exam, so did I. /He and I both passed the exam.
Another example is:
They went to the zoo yesterday. So do we. They went to the zoo yesterday, so did we.
But if the above situation is negative, use inside, nor to lead to inverted sentences (so it cannot be used at this time). For example:
He can't do it, nor can she. He can't do it, nor can she.
He is never late. He is never late, and neither am I.
Second, the usage of So I do
This structure is mainly used to strengthen the tone, indicating ["indeed, indeed"], indicating that the latter agrees with the former's words or opinions, but only further emphasizes and repeats what was mentioned in the previous sentence. The subjects of the previous sentence and the latter sentence refer to the same person or thing. The auxiliary verb do in this structure can also be changed into is, am, are, was, was, does, did, can, could, etc. For example:
He did a good job. He did a good job.
That's true. He really did a good job.
The difference between my willingness and my unwillingness is that.
The former means yes and the latter means no.
I usually play football.
Me too.
I often play football.
Me too.
I never play football.
I don't know, either.
I never play football. I never play either.
I don't usually play football.
I don't know, either.
I don't often play football. Me too.