The phrase "act in the role of" is correct and usable in written English.
It can be used to express the idea of someone taking on certain responsibilities or duties, often as a substitute or in place of someone else. For example, "My assistant had to act in the role of project manager while I was away."
Marvel performs a kind of vanishing act in the role of Regina: now you see her, now you don't.
"It is not an easy task to know how to act in the role of the ex-president," he said.
They act in the role of roaches, although leeches seems a better analogy from the animal kingdom.
Ludwick was drawn away in 1997 from Big Bag to act in the role of Kate in Annie, the 20th Anniversary, the Broadway musical on tour revival of the 1977 Broadway theatre production of Annie.
Alternatively, someone, somewhere in our legal system should act in the role of a citizen's legal ombudsperson and have the authority to say at the point legal action is threatened, "This action reflects contempt for the legal system and an individual's (or a group's) resources should not be consumed in defending such nonsense".
Writer Robyn Brothers sees the addition of the "Hallelujah" coda as indicating that while organized religion may act in the role of a sedative, a notion akin to other Zoo TV themes, the role of personal faith may still have a "desiring, affirming, and 'deterritorializing' force".
Liverpool manager Jurgen Klopp acted in the role of peacemaker during the touchline row between his staff and the staff of Sunderland, it has been revealed.
Acting in the role of battle management system operator, 20 participants undertook four simulated drives, two under high motion (representative of an unsealed road) and two under normal motion (representative of a sealed road), whilst performing various battle management tasks.
El-Sherbini's widower, brother and parents acted in the role of 'co-claimant' and were represented by eight lawyers.
Acting in the role of clinician, the physician's highest priority is the welfare of the individual patient.
Data fields included the procedure date, the trainees' role (i.e. whether the trainee was directly supervised, not directly supervised, or acted in the role of supervising junior staff), hospital, and supervising attending staff physician.
