At a glance
Noun にします means "I'll have / I'll go with [noun]". Use it to state a choice from options, such as when ordering food, shopping, or picking a day.
[Noun] に します。
私はお茶にします。 I'll have tea.
How to form it
Put に after the noun you choose, then add します. It attaches to nouns, including これ, どれ and 何.
| Form | Polite | Casual |
|---|---|---|
| Present | にします | にする |
| Past | にしました | にした |
| Question | にしますか | にする？ |
| Let's | にしましょう | にしよう |
The past form にしました means "I decided on" or "I chose".