The phrase "act as the speaker" is correct and usable in written English.
It can be used when referring to someone taking on the role or responsibilities of a speaker in a discussion or presentation.
Example: "In this debate, I will act as the speaker for our team, presenting our arguments clearly and effectively."
Alternatives: "serve as the speaker" or "take on the role of the speaker".
After judging the speech, each student acts as the speaker's "speech coach" and writes a list of suggestions for the speaker to follow in order to become a more effective or convincing speaker.
For example, for users 1 and 4 (cf. red-marked elements in (varvec{P_{sigma }})), the meeting probability is (p_{14}=0.31) (user 1 acts as the speaker) and (p_{41}=0.54) (user 4 acts as the speaker).
You can also set up a true 5.1 theatre system by adding two Play 3 devices, which can act as the rear speakers.
After the formation of the Fox-North Coalition, Mansfield agreed to act as Speaker of the House of Lords, taking up his post in February 1783.
If you place or receive a call, your car speakers will act as your iPhone speaker and hear the voice of the person you're talking to.
Illocutionary force concerns the act the speaker intends to do in performing the speech act.
These restructured papyrus drapes will act as speakers for the music that will ooze from its pores, a layering of metaphors and creative dimensions that aim to both titillate and lead the audience.
Whenever the lieutenant governor became acting governor, the Senate was to elect one of its members to act as Speaker; that individual then became next in the line of gubernatorial succession.
For this reason, the decision in Velazquez set an important precedent for how the government may act as subsidizer and speaker.
The bedside unit gains points for its ability to act as a decent speaker for your devices, however, and for the extra charging port it offers for your iPhone's USB cable, which means you won't have to plug in yet another device into the power bar many of us now have beside our beds.
Invite experts in the field of drug addiction and treatment to act as guest speakers.
