It is useful when a surgeon is preparing to do a laminectomy (back surgery), usually done to free up nerves which have been impinged upon and are causing pain.
Most useful and more useful.
more useful, the most useful
The comparative form of "useful" is "more useful."
more useful, most useful
Computers are so useful to us.Bert is not a very useful person.I find that the phone is a useful invention.Make yourself useful and pass me the spanner.Hopefully these sentences are useful to you.
how are mirrors useful ? how are mirrors useful ?
more useful, most useful
more useful and most useful
is nuclear deal useful for us? why nuclear deal is useful for us? is nuclear deal useful for us? why nuclear deal is useful for us? is nuclear deal useful for us? why nuclear deal is useful for us? is nuclear deal useful for us? why nuclear deal is useful for us?
useful
Extremely useful
Useful for...in a troop? Useful for...in a Circus? No offense, but what do you mean?