立て替える (tatekaeru) conjugation
to pay in advance, to pay for another
立て替える (たてかえる, tatekaeru) is an ichidan verb. Ichidan verbs are the tidy ones: drop the final る and add the ending. Nothing inside the word ever changes. Every form below is tappable — hear it, then say it back.
Conjugation table
| Form | Plain (casual) | Polite (~ます) | When you use it |
|---|---|---|---|
| Dictionary / plain | 立て替える tatekaeru | 立て替えます tatekaemasu | The form you look up. Also the casual present and future. |
| Plain negative | 立て替えない tatekaenai | 立て替えません tatekaemasen | “doesn’t / won’t”. From here it conjugates like an i-adjective. |
| Plain past | 立て替えた tatekaeta | 立て替えました tatekaemashita | The casual past — same ending as the te-form, with た/だ. |
| Plain past negative | 立て替えなかった tatekaenakatta | 立て替えませんでした tatekaemasendeshita | “didn’t”. The negative past, still i-adjective-shaped. |
| Te-form | 立て替えて tatekaete | — | The connector: requests, linking clauses, ~ている. |
| Progressive (~ている) | 立て替えている tatekaeteiru | 立て替えています tatekaeteimasu | “is ~ing”, or an ongoing resulting state. |
| Desire (~たい) | 立て替えたい tatekaetai | 立て替えたいです tatekaetaidesu | “want to ~”. Behaves as an i-adjective. |
| Volitional | 立て替えよう tatekaeyou | 立て替えましょう tatekaemashou | “let’s ~” / “I think I’ll ~”. |
| Potential | 立て替えられる tatekaerareru | 立て替えられます tatekaeraremasu | “can ~”. What you could do; the object often takes が. |
| Passive | 立て替えられる tatekaerareru | 立て替えられます tatekaeraremasu | “is ~ed”. Also the honorific and the suffering passive. |
| Causative | 立て替えさせる tatekaesaseru | 立て替えさせます tatekaesasemasu | Make or let someone do it. |
| Causative-passive | 立て替えさせられる tatekaesaserareru | 立て替えさせられます tatekaesaseraremasu | Be made to do it — the long one. |
| Imperative | 立て替えろ tatekaero | 立て替えてください tatekaetekudasai | Blunt order. Use ~てください in real life. |
| Prohibitive | 立て替えるな tatekaeruna | — | “don’t!” — dictionary form + な. |
| Conditional (~ば) | 立て替えれば tatekaereba | — | “if ~”. General rules and hypotheticals. |
| Conditional (~たら) | 立て替えたら tatekaetara | — | “if / when ~”. The everyday conditional. |
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Why it conjugates this way
Ichidan verbs are the tidy ones: drop the final る and add the ending. Nothing inside the word ever changes.
See the full rules on the verb conjugation guide.