I am confused about the usages of the phrases 'dependent upon', 'depend on' and 'depend upon'.
For example, for the sentence below, which I found when I look up the phrase 'dependent upon' on the yahoo Korea website. I think the underlined part could use 'depend on' too.
The charity is totally dependent upon money from the public.
Top answer
dependent upon is an adjectival phrase depend on = depend upon (more formal) is a phrasal verb
— Inchoateknowledge
dependent upon is an adjectival phrase depend on = depend upon (more formal) is a phrasal verb
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In American English, "on" and "upon" are used interchangeably. I would say all of the following are correct, but vary in their level of formality -- 1 being the most formal; 4 being the most informal.
The charity is totally dependent upon money from the public.
The charity is totally dependent on money from the public