Which of the subjects do you like best,Eddie?

题目

Which of the subjects do you like best,Eddie?
Which subjects do you like best,Eddie?中的subject要不要加s

答案

如果在of 短语中肯定要加!
注意：
of 在这里是表范围的“在.之中”
Which of the subjects do you like best?
但：
Which subject（单数） do you like best.