A little culture with Miyabi
Kudasai vs Onegaishimasu: Two Ways to Make a Request
Compare kudasai and onegaishimasu with restaurant and everyday examples. Learn where both work and why they cannot always replace each other.
Everyday Japanese
ください (kudasai) and お願いします (onegaishimasu) both appear in polite requests, but they are not interchangeable translations of “please.” Start with two reliable patterns: an item plus をください to request that item, and a suitable noun plus お願いします to ask for something or a service.
Request an item with kudasai
水をください (mizu o kudasai) means “Water, please.” これをください (kore o kudasai) means “This, please.” The particle を is written wo in some typing systems but pronounced o in these sentences.
ください also follows a verb’s te-form: 待ってください (matte kudasai) means “Please wait.” You cannot attach it to any dictionary-form verb unchanged. Learn the whole expression first if verb forms are still new to you.
Ask for a service with onegaishimasu
お会計をお願いします (okaikei o onegaishimasu) means “The bill, please.” もう一度お願いします (mou ichido onegaishimasu) asks for something once more, such as a repeated explanation. These are common situations where a request is about an action or service.
水をお願いします (mizu o onegaishimasu) can also request water. In this kind of order, both expressions can work. The difference is not a universal rule that one is polite and the other is rude; both can be polite in appropriate patterns.
Know where swapping fails
In 待ってください, do not simply replace ください with お願いします to make 待ってお願いします. That does not preserve the same natural grammatical pattern. More elaborate requests exist, but they require a different construction.
よろしくお願いします (yoroshiku onegaishimasu) is another expression you should learn as a whole. Depending on the situation, it accompanies an introduction or a request for cooperation. Replacing its ending with kudasai does not produce an equivalent phrase.
Practice three requests
For an item on a menu, say これをください。For the bill, say お会計をお願いします。When you missed what someone said, use もう一度お願いします。Give each request its own imagined setting.
Now ask someone to wait: 待ってください。Notice that this sentence uses a verb pattern, while the menu request uses a noun. Recognizing that difference is more reliable than trying to rank every sentence by which English translation of “please” it seems to contain.