In a passage I encountered:
To an inattentive reader, the expressions,
- “I am the man, who commands you”
and
- “I am the man, who command you”
[reformatted, EA]
may appear to be precisely equivalent. This, however, is by no means the case —(See “The Etymology and Syntax of the English Language explained,” p. 261, fourth Edition.).
I could not find the 4th edition of the referred book, and unfortunately not sure I understand the difference here.