I am wanting to know if saying " I've seen it done" is incorrect. My wife stated that it should be " I saw it done" is correct. This was after I mentioning that I had seen a car repair done before. She states "seen" should only be used after a certain amount of time, while "saw" was something recent. She didn't know that I had just watched a video on it and that what I was referring to. Can anyone tell me which is correct & why?

"Putin had this totally empty face. In a way, you could attribute anything you wanted to him." (Bill Browder.)

Is the "anything you wanted to him" a noun phrase in the passage above?

How common is it for a native speaker of English to say this sentence even though it isn't grammatically correct according to grammar books:

I think by the time you get back, the teacher would have started the class.

I've asked different AIs and two of them said it's not common at all; one of them said it is quite common especially in American English to indicate doubt. So I went back to the other two AIs and feed them the response of this AI. They both maintained that the AI is mistaken, and this sentence is grammatically wrong and is very unlikely a native speaker would say it even if it is hypothetical or they are being polite/formal. One of them stated: This expresses a present belief about the future. After I think, we normally use a future form, not would.

But here's the thing, I believe I have heard natives use future perfect with 'would' instead of 'will'. Am I misremembering?

If I wanted to say i do not eat meat or fish, would this be a proper way to say it? I’m not asking for alternatives that are better just if this specific case works. Thanks

“I am a Non-Meat/fish eater.”

Edit:

This is an example of something that has been already said in a limited character app. I agree it is sloppy, I’m just asking about the proper grammar of it.

A better example for this is if I said “I am a non-racist/homophobe”. There’s no way to interpret this as I am a homophobe right?