yes you could say which is better or worse
No. Use "less bad" or "better" It is, though people tend to opt for the positive, i.e. it is better
No. If something is in a less fortunate state, then it is worse, not worser.
No it is not unless it is in the context of an indirect object where "to" or "for" plus the above phrase is grammatically correct. In addition, it is better to say "my partner and I" although that can lead to rather convoluted sentences.
No, the phrase "of which we are all" is not grammatically correct. It would be better to say "of which we all are" or simply "which we all are."
No, it is not grammatically correct. The correct way to say it is "your older sister."
It is grammatically correct to say: There is nothing wrong with this machine.It is not grammatically correct to say: Will it is be grammatically correct to say ....The correct way to write that or say that would be: Would it be grammatically correct to say....
'What a drunkard you are' is a grammatically correct English sentence.
Yes, as the object of a verb or a preposition: I saw Bob; I saw her; I saw Bob and her. Some people think "her and Bob" sounds better, but it is not any more correct. There is nothing wrong grammatically with the construction 'Bob and her' as the object of a verb. Whether it sounds better or worse than 'her and Bob' is a question of usage or taste, not of grammar.
No, it is not grammatically correct to say "what a fun." It should be corrected to "What fun!" to make it grammatically accurate.
No. Him and me is correct.
This sentence is grammatically correct.
It is not, but it is widely used because it conveys the general idea of the question as well as its grammatically correct version.No you should say "Where are you" the at at the end is not needed.