Making requests with ください
Ask someone to do something, or ask for something you want.
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Add ください to a verb’s te-form: 待って ください means “Please wait,” 見て ください means “Please look,” and 話して ください means “Please speak.” These are polite but direct requests.
Keep two patterns separate. For an action, use te-form + ください with nothing between them. For a thing, use noun + を + ください: コーヒー を ください means “A coffee, please.” Do not insert を after the te-form as in 見て を ください.
These patterns are useful in cafés, stores, and everyday instructions. Polite grammar alone does not make every request appropriate: your tone, the situation, and how much you are asking of someone still matter.
Examples
待って ください。
Please wait.
本 を 見て ください。
Please look at the book.
水 を ください。
Water, please.
日本語 で 話して ください。
Please speak in Japanese.