■ You can use for one to emphasize that a particular person is definitely reacting or behaving in a particular way, even if other people are not.
- I, for one, hope you don't get the job.
■ I, for one, ...: used to emphasize that you believe something, will do something etc and hope others will do the same
- I, for one, am proud of the team's effort.
- There were several other people absent that afternoon, weren't there? Mr Ashton for one.