An easy way to determine which to use is to see which pronoun could replace the word.
For example: You are going with him? >>> You are going with WHOM?
WHO is going? >>> He is going.
Thus, if “he” sounds right, use WHO.
If “him” sounds right, use WHOM. Notice: both...
We regularly run into the situation when a sentence we initially write ends in what appears to be a preposition. Sometimes this occurs when we use phrasal verbs. These multiple-word verbs consist of a verb plus a preposition (called a particle in this usage)
or adverb - which creates a meaning...