syuumatu ni tomodati to issyo ni otya wo nomimasen ka?

The form 〜ませんか (negative + question particle) is a very common way to make a polite invitation or suggestion in Japanese. Literally it means “won’t you…?”, but its function is more like “would you like to…?” or “shall we…?” in English.

• Using 飲みませんか instead of 飲みますか softens the tone and makes it clear you’re inviting someone to join you, rather than just asking if they drink tea or not.
• It’s considered friendlier and less direct than a positive question.

They serve different purposes:

1. The first に in 週末に marks the point in time (“on the weekend”).
2. The second に is part of the adverbial phrase 一緒に, turning the noun 一緒 (“together”) into “together (with someone).” Without that に, 一緒 would just be a noun, not an adverb.

They look similar but play different roles:

• 友達と uses the particle と to mark your companion: “with a friend.”
• 一緒に is an adverb meaning “together.”

You could say 友達とお茶を飲みませんか and it would still make sense, but 友達と一緒に emphasizes the idea of doing it “together with a friend.”

The prefix お is an honorific/polite marker added to certain words.

• お茶 is the standard, polite way to say “tea.”
• If you drop the お and just say 茶, it can sound overly casual or literary. Stick with お茶 in everyday conversation.

Both forms can suggest doing something together, but their nuances differ:

• 飲みませんか is a direct invitation: “Would you like to drink…?”
• 飲みましょうか often sounds like you’re deciding on a plan (“Shall we drink…?”) or offering to do something for someone (“Shall I get you a drink?”). It’s less of an inviting question and more of a proposal.

Yes. Thanks to particles, Japanese word order is quite flexible. You could say:

• 週末に友達と一緒にお茶を飲みませんか？ (time → companion → verb)
• 友達と一緒に週末にお茶を飲みませんか？ (companion → time → verb)

Both are grammatically correct, though putting the time phrase (週末に) first is the most common and natural for setting the scene.