Thread: Some phrasal verbs

Hello.
I would like to know if my use of phrasal verbs in these sentences is right and if someone might correct all my mistakes:
My cousin Thomas has invited me to his wedding. I must get back to him this afternoon without delay!
After a few months of peace, feelings of violence started coming up.
You think I´m playing at something. But I´m not, actually.
It is imperative to calm those crowds down.
Well, thank you.
Best regards.

My only question is about "to play at". Perhaps it is new slang, slang used by much younger people, etc. I've certainly heard "to play" meaning "to joke, not be serious, etc." Otherwise, your phrasal verbs look great to me.

You think I´m playing at something. But I´m not, actually.

This is fine.
"Play at" means to pretend, or to do something with less than a full, sincere effort.

"You think I´m playing at something."

Without adding context to the above, would you truly expect to hear the sentence in a conversation? By adding context, sense can be given to almost anything uttered under the sun, but the sentence is as above written. Sorry, folks, but I'm not buying it.

For me, the original sentence brings to mind a conversation between two people in a romantic relationship. One person is being accused of participating in the relationship without really being committed.

"Play at" isn't the most formal way to express the idea, but it's also not slang or something only younger kids would say.

I think Vicente's examples are good.

If something is good in context, then it's good, right? Lot's of very correct utterances are hard to interpret out of context.

Well, thanks (to?) all of you for the answers, especially Vicente, howdy???
Could anybody give me a synonym of To play at?
This forum is great!!! (cool, would be fine?)
My best wishes