Prepositional Adjectival Phrases - Letter "C" | GiveMeSomeEnglish!!!
(to be) In Charge / In Charge Of (something) – The first phrase, without the preposition "of" just means to be the boss, manager, leader, main decision-maker. The second phrase, with the preposition "of" means the same thing, but is used to be either more specific or to say that one is responsible for a specific thing (project, team, department) but nay not be the main decision-maker or boss.