Questions about example sentences with, and the definition and usage of "Ppt"

A: prepare the ppt = prepare the powerpoint file. set up the slideshow

prepare for the ppt = prepare for the presentation itself. get ready to speak in front of people and talk through the slides. preparing for the presentation might also include preparing the file but it means more than that

A: First sentence makes sense.
Second sentence is incorrect grammar and unnatural sentence.

You can also say “I didn’t expect that they would prepare the PPT”.

A: Formal/Business meetings:

Good morning/afternoon/evening everyone. On behalf of [name of company], I'd like to welcome you today to [event or purpose of presentation]. My name is [name] and I am the [job title or background information].

Informal/quick presentation:

Hello everyone! I'm [name] and this is my presentation about [purpose of presentation].

A: Yes. Although I'd say power point presentation instead of just PPT.

A: I am from Australia and we would normally say powerpoint rather than ppt.

Also just a note you can't say really great - either really good, or great. We don't exaggerate as much in English as you would in Chinese.

A: yes, that's ok, so long as the intended audience knows what PPT is, because I don't 🤔

A: Consider switching the first clause with the second so it would sound more natural. As in, I moved the class in the evening because I failed to load the PPT in the afternoon. Thank you for your understanding/consideration. ^_^

A: In any presentation, the information you present is the one you feel is important. Most likely you will choose what everyone else considers to be important too. So don't worry!

But to answer your question, a good way to do that is compare what 2 or 3 sources have in common. Good luck with your presentation!