Have you ever wondered when to use 'whom' or 'who' in a sentence? Here is a good web page that gives the solution as well as some handy tips:
Ref. https://ask.yahoo.com/ask/20021113.html-
On the web site of the Meredith College Writing Center, we found another handy rule of thumb -- only pronouns that are objects end in the letter "m" (whom, him, them).
Ref. https://www.meredith.edu/learn/wrtngctr/grammar/case.htm
I love using 'whom' when it's appropriate. I was taught the second way about differentiating between 'who' and whom.' If the person being written about ended with an 'm' or the parallel of that (him, her) then 'whom' would be used. If it was something along the lines of 'he' or 'she' then it's 'who.'
I have always employed the same tactic as Ambria in determining whether or not it should be who or whom. I use a similar tactic with I or me.
I learned the subject/object rule in school but I still found myself second guessing the use of them, and often. I like the way they restate the statement to make it as simple as possible. Once you do so, it is easier to figure out which one to use. Thanks for the tip!
I sometimes get this wrong, and get corrected by my Son who is taking English language A level at college, we have a good laugh about it, and he reminds me that as Malexander referred to the subject/object rule, this has to be used as to whether you are describing from someone who is known to you or not.
I'm just glad that it's not me doing these exams that he is taking!
I occasionally use whom, but only when I place a preposition directly before it: "I like the person to whom I gave the flower." Usually, I only use "whom" in a formal setting or within a formal school paper.
I dislike how some people feel the need to be overly proper by using it in a sentence as such: "Whom is that, in the white shirt?" Whom does indeed sound more proper, but in fact it is not, unless it is used in the correct context. "To whom did she give the paper?" would be a sentence with the proper use of whom. To avoid confusion, I think it best to use "whom" mainly when there is a preposition directly preceding it, although I suppose that "whom" can be used in sentences where the preposition comes last: "Whom did she give the paper to?" is a valid use, but then again, ending a sentence with a preposition, unless it is part of a verb, is itself against a grammatical rule. Sentences with an objective use of "whom" is appropriate as well: "Whom did you see standing near the taxi?" In this case, the subject is "you" and the object is "whom".