After reading the comments and answer for this post, I have realized that the best (and/or maybe the only) way to master elliptical structure is seeing and examining more examples in this subject.
I have seen that we can have the following typical examples in elliptical structures:
I answered the question yesterday, and him answered the question today.
She made him angry, not him made her angry .
(Please note that in above examples the elided words are indicated with subscripts.)
But, I expected that the following must be correct:
I answered the question yesterday, and he answered the question today.
She made him angry, not he made her angry .
Can any one help me to answer the following?
Are the former typical examples correct? Why do we have such typical examples? Are English speakers free to use objective pronouns instead of subjective ones whenever they want?
If all of them are correct, which form is more appropriate for formal writing?
Updated
For those who may claim that the above examples are absolutely incorrect I want to cite the following passage from Hudson’s article1(pages 61& 62):
”In particular, pronouns often appear in their non-subject form when they are in the subject position of a gapped conjunct: He likes her, and her, him. Some speakers say they prefer the subject form in such cases (He likes her, and she, him), but we simply do not know for sure who actually uses which form in speech ... The main fact is that non-subject pronoun forms are far more acceptable in subject position when they precede a gap than in other situations.”
1. Hudson, R. 1989. Gapping and grammatical relations. Journal of Linguistics 25, 57-94. One can read the article here.