The phrase "act as a preview" is correct and usable in written English.
You can use it when describing something that serves as an introduction or a glimpse into what is to come.
Example: "The trailer will act as a preview for the upcoming movie, giving audiences a taste of the storyline and characters."
Alternatives: "serve as a preview" or "function as a preview."
A good title will act as a "preview" for what your paper will be about.
Your introduction should also identify the main idea of your autobiographical essay and act as a preview to your story.
Keep in mind that your introduction should identify the main idea of your critical essay and act as a preview to your essay.
Keep in mind that your introduction should identify the main idea of your expository essay and act as a preview to your essay.
Firstly, she frames the short narrative with a description of the children's life before the catastrophe; this frame acts as a preview to some of the themes developed in the main narrative, which has a markedly fairytale style.
Comcast, not to talk your ear off on all this stuff, but Comcast just came out with a software that works on their iPad that acts as your remote control, acts as a preview device.
It acted as a preview of the music and style that would surface on the next album, The Soft Bulletin (1999) and is the predecessor to the band's more conventional surround sound releases.
The party hopes that Kejriwal's super-short rule in Delhi will act as a tantalizing preview for voters going to the polls in staggered nationwide voting in April and May.
The city acts both as a retrospective memory and as a preview of our possible-someday lives.
The present clinical trial update consists of a review of two of eight current studies (the 10981-22023 AMAROS trial and the 10994 p53 trial) of the European Organization for Research and Treatment of Cancer Breast Cancer Group, as well as a preview of the MIND-ACT trial.
This event acted as sort of a preview for future Fortnite events, as Epic has planned a $100 million worth of prize pools to give away across other events this year, and we saw the debut of spectator tools to help with that.
