At a glance
いつか means "someday" or "one day". It is used for a time in the future that is not decided yet, often with wishes and suggestions.
いつか + [future action / wish]
いつか ～たいです。
いつか日本に行きたいです。 I want to go to Japan someday.
How to form it
いつか is an adverb. It usually goes at the start of the sentence or right after the topic (私は), before the verb phrase. It does not change form.
| Combines with | Example | Meaning |
|---|---|---|
| ～たいです (wish) | いつか日本に行きたいです。 | I want to go to Japan someday. |
| ～ましょう (suggestion) | いつか一緒に行きましょう。 | Let's go together someday. |
| ～ます (future plan) | 私はいつか車を買います。 | I will buy a car someday. |
| Casual ～たい | いつか外国で働きたい。 | I want to work abroad someday. |