“〜mae ni / 〜ta ato de”: The Order of Actions [JLPT N5]
Content by NTJ Kuma · Nihongo to Japan editorial team · Updated July 27, 2026
「食べる前に」vs「食べた後で」 — 前に always takes the dictionary form, 後で the ta-form.
Why is 「食べた前に」 wrong? — 前に always takes the dictionary form
Talking about what you do before eating, many learners copy the tense and write 「✗ 食べた前に」 — but whether the event is past or future, 「前に」 always takes the dictionary form (食べる前に). By contrast, 「た後で」 always takes the た-form (食べた後で). This is the core of ordering actions at N5: 前に = not yet done (dictionary form), 後で = already done (た-form). Fix the form and the order never gets muddled.
前に takes the dictionary form, た後で the た-form
- 〜前に = before ~ (the following action happens first; this one isn't done yet) → dictionary form: 出かける前に鍵を確認する (check the keys before going out).
- 〜た後で = after ~ (this action is completed) → た-form: ご飯を食べた後で歯を磨く (brush your teeth after eating).
Key: the verb before 前に is always dictionary form, before た後で always the た-form — regardless of whether the sentence is past or future. For nouns: 「noun ＋ の前に／の後で」 (授業の前に).
How to Connect
| Pattern | Verb form | Example |
|---|---|---|
| 〜前に | dictionary ＋ 前に | 食べる前に |
| 〜た後で | た-form ＋ 後で | 食べた後で |
| noun | noun ＋ の前に／の後で | 授業の前に |
Examples in use
- 出かける前に、鍵を確認してください。(Check your keys before going out.) — 前に (dictionary)
- 寝る前に、歯を磨きます。(I brush my teeth before bed.) — 前に
- ご飯を食べた後で、薬を飲む。(Take the medicine after eating.) — た後で
- 仕事が終わった後で、飲みに行った。(After work, I went for a drink.) — た後で (past, still た-form)
- 授業の前に、教科書を読む。(I read the textbook before class.) — noun ＋ の前に
⚠️ Easy traps to avoid
① 「前に」 is always dictionary form — don't follow the tense. Even for yesterday's event it's 「食べる前に」 (✗ 食べた前に). The verb form is fixed; tense is carried by the sentence ending.
② Nouns need 「の」. 授業の前に, 食事の後で.
③ 後で vs てから. Both mean “after,” but 「てから」 stresses that B follows A closely or as a prerequisite (宿題をしてから遊ぶ = play only after finishing homework); for a plain time order, use 「た後で」.
🔄 Compare with similar forms: 前に / た後で / てから / ながら
| Pattern | Meaning | Example |
|---|---|---|
| 〜前に | before ~ (the other action first) | 寝る前に |
| 〜た後で | after ~ (this action completed) | 食べた後で |
| 〜てから | after ~ (close sequence / prerequisite) | 手を洗ってから食べる （eats after washing his hands） |
| 〜ながら | while ~ (simultaneous) | 音楽を聞きながら勉強 |
💡 The key point in use
Lock in one line: 「前に」 takes the dictionary form, 「た後で」 the た-form — the verb form is fixed. Learners get pulled off course by their own sense of tense and want to write 「食べた前に」 for a past event — resist! Tense lives in the sentence ending (〜ました etc.); before 「前に」 it's always the dictionary form. Burn that into reflex and you won't lose points on something this basic.
❓ FAQ
Q: For a past event, is 「前に」 still dictionary form?
Yes! “Last night I brushed before bed” is 「昨日、寝る前に歯を磨きました」 (✗ 寝た前に). The past is shown by 「磨きました」; the verb before 「前に」 stays dictionary form.
Q: Are 「た後で」 and 「てから」 interchangeable?
Often close, but 「てから」 stresses “only after doing A, then B” (a sequence or prerequisite: お金を払ってから使う); for a plain time order, 「た後で」 is fine.
🖊️ Practice Quiz
Q1. 「映画を見___に、予告を確認する。」(before watching the movie) Which is correct?
(A) る前 (B) た前 (C) る後 (D) た後
Q2. 「出かける___、鍵を確認してください。」(before going out) Which is correct?
(A) 後で (B) 前に (C) てから (D) ながら
Q3. 「ご飯を食べ___後で、歯を磨く。」(after eating) Which is correct?
(A) る (B) た (C) て (D) ない
Q4. Which sentence is correct?
(A) 食べた前に手を洗う。
(B) 食べる前に手を洗う。
(C) 食べた前で手を洗う。
(D) 食べるの前に手を洗う。
Q5. 「授業___前に、教科書を読む。」(before class — noun ＋ 前に) Fill the blank.
(A) の (B) を (C) に (D) で
Answer Key
1. (A) る前 ── 「前に」 always takes the dict. form (even for the past): 見る前に (✗ 見た前に).
2. (B) 前に ── 出かける前に = before going out; 前に takes the dict. form.
3. (B) た ── 「後で」 takes the ta-form: 食べた後で.
4. (B) 食べる前に手を洗う ── 前に takes the dict. form (✗ 食べた前に); a noun adds の (食事の前に).
5. (A) の ── a noun before 前に adds の: 授業の前に.