As much as

Pastel, I have a headache already! ~L~
Let's go step by step

I agree with what you said about the first pair of sentences (me/I do).

Your other example, "I don't like him as much as you" can certainly be ambiguous; the two interpretations you posted are possible.

I agree with your analysis of 2-a.
I'd say, however, that the two sentences would be affirmative rather than negative:
"I like him."
"You like him."

Now, 2-b is the sentence that may be ambiguous, as I've just said.
The personal pronoun "you" has that same form as subject and object. 'You' and 'it' and the only two personal pronouns that have the same form as subject and object; the other pronouns change. Anyway, since you don't have an auxiliary very accompanying "you", you are right to say that the objective form is used. But, be careful; the fact that an objective form is used in this type of sentence depends only on the fact that "as" is a preposition, so when it is followed by a pronoun, it will be an objective pronoun. You can choose between that and a finite clause such as "You do". This example will probably be more clear with other pronouns (those who have different subject and object forms).
"I don't like him as much as you" can mean either that you like him more than I do or that I like you more than I like him.

"He doesn't like her as much as we" sounds weird to you because it is not grammatically correct.
"He doesn't like her as much as us" and "He doesn't like her as much as we do", on the other hand, are correct.
The meaning of "He doesn't like her as much as we do" is clear: we like her more than he does.
The meaning of "He doesn't like her as much as us" is, again, ambiguous. The two possible interpretations are "we like her more than he does", as in the previous example, or "he likes us more than he likes her".

I'm not sure what you mean by the "transformation" part of your post. but let's give that a try as well.

Step 1- "I don't like him as much as you don't like him."
I would avoid that construction if I were you! It isn't correct.

Step 2- "I don't like him as much as you like him."
This sentence is correct, but it can be improved to avoid redundancy.

Step 3- "I don't like him as much as you do."
This is perfect, but it does not mean what you think. The mening of this sentence is the sentence in step #2.
- We both like him, but you like him more than I do.
- We both like him, but I like him less than you do.
- We both like him, but I don't like him so/as much as you do.

The three sentences have the same meaning. In your example, the negation applies only to the first main verb, the verb whose subject is "I".

One more thing:
"I don't like him as much as you do" and "I dislike him as much as you do" have different meanings.


I'm not sure this is what you were looking for. If I misunderstod your question, let me know?

Miriam

Hello again, Pastel
You are definitely complicating my winter holidays! ~L~

Let's have a look at this concept of "negation" in relation with "I don't like him as much as you do".

You posted:
Back to our original sentence, there is a nagative auxiliary that makes me relate its function to form a negation of the main verb 'like', therefore, I think of "dislike".
"I dislike him."
"You dislike him."
Both of us dislike him but you dislike him more than I do.
( Can you feel my headache now? ;>_

I can feel both your headache and mine right now! ~L~

The sentence "I don't like him as much as you do" speaks of a person (he) who is liked by you and by me. The only difference is that I like him less than you do (or you like him more than I do, which is the same thing in the end).

It is not possible to derive the sentences "I dislike him" and "You dislike him" from the original sentence because it clearly says that "you" like him. "Like" and "Dislike" are antonyms. You cannot possibly use one when you mean the other.

The original sentence means "You like him. I like him too, but not so/as much as you do." It is true that you have a negation in that sentence, but you have to take into account what follows the negation:
1. "I don't like him as much as you do"
is not the same as simply
2. "I don't like him"
It is only in the second sentence that you are saying you don't like him.

In the original sentence you're making a comparison: we both like him, but to different extents.
Now, when you just say "I don't like him", then you have a negative idea. You are not making any comparisons there. However, in the original sentence you are not saying "I don't like him but you do".

Suppose you say "I don't like strawberries as much as I like cherries".
You are not saying that you don't like strawberries, you are noly saying that you like them less than you like cherries.

Let me know if this is still not clear?

Miriam

Can I say "I don't like him, as much as you do." I add a comma to the sentence.

Hi, maj

I'm afraid I wouldn't do anything with your examples. Thank you.