Future Tense in Japanese: Complete Guide to Conjugation
Introduction: What is Future Tense in Japanese?
If you're wondering how to use future tense in Japanese, here's a surprising fact: Japanese doesn't have a dedicated future tense conjugation like English does. Instead, Japanese uses the same verb forms for both present and future actions, relying on context, time expressions, and auxiliary structures to indicate when something will happen.
This means that the sentence 食べる (taberu) can mean both "I eat" and "I will eat" depending on the context. Understanding how Japanese expresses future meaning is essential for natural communication and is fundamentally different from languages like English, Spanish, or French.
Formation: Japanese Future Tense Conjugation
Since Japanese doesn't have a separate future tense, Japanese future tense conjugation uses the same forms as present tense. The key is understanding how to signal future meaning through other elements.
Basic Non-Past Form (Dictionary Form)
The dictionary form of verbs serves as both present habitual and future tense:
| Verb Type | Dictionary Form | Meaning (Present/Future) |
|---|---|---|
| Godan (u-verbs) | 行く (iku) | go / will go |
| Ichidan (ru-verbs) | 食べる (taberu) | eat / will eat |
| Irregular | する (suru) | do / will do |
| Irregular | 来る (kuru) | come / will come |
Polite Form (ます Form)
The polite form also expresses both present and future:
| Dictionary Form | ます Form | Meaning |
|---|---|---|
| 行く | 行きます (ikimasu) | go / will go |
| 食べる | 食べます (tabemasu) | eat / will eat |
| する | します (shimasu) | do / will do |
| 来る | 来ます (kimasu) | come / will come |
Expressing Strong Intention: ～つもり and ～予定
To explicitly mark future intention or plans, Japanese uses auxiliary expressions:
| Structure | Usage | Example |
|---|---|---|
| Verb + つもりだ | Personal intention | 行くつもりだ (I intend to go) |
| Verb + 予定だ | Scheduled plan | 行く予定だ (I'm scheduled to go) |
| Verb + だろう/でしょう | Probability/conjecture | 雨が降るでしょう (It will probably rain) |
Usage: When and How to Express Future in Japanese
Understanding how to use future tense in Japanese requires mastering context clues and time expressions.
Time Expressions
Adding time words is the most common way to clarify future meaning:
- 明日 (ashita) - tomorrow
- 来週 (raishuu) - next week
- 来月 (raigetsu) - next month
- 来年 (rainen) - next year
- 後で (ato de) - later
- もうすぐ (mou sugu) - soon
Context-Based Understanding
Without time expressions, context determines whether a verb is present or future:
- Responding to "What are your plans?" → future meaning assumed
- Discussing arrangements or appointments → future meaning assumed
- Describing habitual actions → present meaning assumed
Expressing Different Degrees of Certainty
Japanese offers various ways to express future events with different levels of certainty:
- Plain/ます form - neutral statement about future
- ～つもりだ - strong personal intention
- ～予定だ - confirmed schedule or plan
- ～だろう/でしょう - probability or conjecture
- ～かもしれない - possibility (might happen)
Examples: Future Tense in Context
Here are practical examples showing Japanese future tense conjugation in real sentences:
明日、東京に行きます。
(Ashita, Tōkyō ni ikimasu.)
I will go to Tokyo tomorrow.
来週、新しい仕事を始めるつもりです。
(Raishuu, atarashii shigoto wo hajimeru tsumori desu.)
I intend to start a new job next week.
午後から雨が降るでしょう。
(Gogo kara ame ga furu deshō.)
It will probably rain from the afternoon.
来年、日本に留学する予定です。
(Rainen, Nihon ni ryuugaku suru yotei desu.)
I'm planning to study abroad in Japan next year.
彼女はもうすぐ来ると思います。
(Kanojo wa mou sugu kuru to omoimasu.)
I think she will come soon.
週末に映画を見に行こうと思っています。
(Shuumatsu ni eiga wo mi ni ikou to omotteimasu.)
I'm thinking of going to see a movie this weekend.
Common Mistakes: What Learners Often Get Wrong
When learning how to use future tense in Japanese, learners commonly make these errors:
1. Looking for a Separate Future Conjugation
Many learners expect Japanese to have a distinct future tense form like "-will" in English. Remember: the non-past form covers both present and future.
2. Overusing つもり
While つもり expresses intention, using it too frequently can sound overly emphatic or even rude in some contexts. Often, a simple verb with a time expression is more natural.
- ❌ 明日、朝ごはんを食べるつもりです。(Too formal for a routine action)
- ✓ 明日、朝ごはんを食べます。(Natural for everyday plans)
3. Confusing でしょう with Definite Future
でしょう expresses probability or conjecture, not certainty. Using it for definite plans sounds uncertain or distant.
- ❌ 明日、会議に出席するでしょう。(Sounds like you're unsure about your own plans)
- ✓ 明日、会議に出席します。(Confident statement of your plans)
4. Forgetting Time Context
Without time expressions or clear context, listeners may interpret your statement as present tense. Always provide temporal context when discussing future events.
5. Mixing Formality Levels
Ensure consistency between your main verb and auxiliary expressions. Don't mix casual つもりだ with polite ます forms inappropriately.
- ❌ 行くつもりでございます。(Overly mixed formality)
- ✓ 行くつもりです。(Consistent polite level)