Here are some practice exercises:
http://www.chompchomp.com/handouts/wordchoice07.pdfhttp://www.towson.edu/ows/exercisewho-whom2.htm
http://www.tolearnenglish.com/exercises/exercise-english-2/exercise-english-6923.php
Here are some rules:
Use the he/him method to decide which word is correct. he = who him = whom | ||
Examples: | Who/Whom wrote the letter? He wrote the letter. Therefore, who is correct. | |
For who/whom should I vote? Should I vote for him? Therefore, whom is correct. | ||
We all know who/whom pulled that prank. This sentence contains two clauses: We all know and who/whom pulled that prank. We are interested in the second clause because it contains the who/whom. He pulled that prank. Therefore, who is correct. (Are you starting to sound like a hooting owl yet?) | ||
We want to know on who/whom the prank was pulled. This sentence contains two clauses: We want to know and the prank was pulled on who/whom. Again, we are interested in the second clause because it contains the who/whom. The prank was pulled on him. Therefore, whom is correct. |