I can only refer to some examples:
whom is the objective form of who. In everyday spoken or written English, people usually use who rather then whom: Who did you send it to? Whom is usually used only in the phrases: one of whom, none of whom, some of whom etc. (Longman dictionary). In formal writing whom is preferred in sentences like these: the man to whom he sold his car and in the others mentioned below:
1. the person whom I mentioned earlier... ([STRIKE]about who[/STRIKE])
2. the person to whom I spoke... ([STRIKE]to who[/STRIKE], who I spoke with)
3. the boy pointed at the girls, one of whom was crying (one of them)
That is means I use whom with (object). Right?
If this is right, could you give me sentences for who to compare?
If you are going to continue using the forum, you need to learn and use the rules of written English:
- Start every sentence with a capital letter.
- End every sentence with a single punctuation mark (full stop, question mark, exclamation mark).
- Always capitalise the word "I" (first person singular).
Please note that I only corrected the capitalisation, punctuation and spacing in your post above. I did not correct the grammar.
Am I to assume that this post was written ironically? The first two rules I gave you were "Capitalise the first word of every sentence" and "end every sentence with a punctuation mark. Your reply is "thanks" with no capital letter and no full stop. Here is how your post should have looked.
We expect learners to take notice of our advice on this forum. In future, I will not help or reply on any posts where you fail to follow those basic rules.