Forum   Blog   Links  

It's all in the past

← Previous (Negative Verbs) | Table of Contents | Next (Particles 2) →
Go to Exercises



Changing verbs to the past tense

We will finish defining all the basic properties of verbs by learning how to express the past and past-negative tense of actions. I will warn you in advance that the conjugation rules in this section will be the most complex rules you will learn in all of Japanese. On the one hand, once you have this section nailed, all other rules of conjugation will seem simple. On the other hand, you might need to refer back to this section many times before you finally get all the rules. You will probably need a great deal of practice until you can become familiar with all the different conjugations.

Past tense for ru-verbs

We will start off with the easy ru-verb category. To change a ru-verb from the dictionary form into the past tense, you simply drop the 「る」 and add 「た」.
To change ru-verbs into the past tense

Examples

(1) ご飯は、食べた
- As for meal, ate.

(2) 映画は、全部見た
- As for movie, saw them all.

Past tense for u-verbs

Changing a u-verb from dictionary form to the past tense is difficult because we must break up u-verbs into four additional categories. These four categories depend on the last character of the verb. The table below illustrates the different sub-categories. In addition, there is one exception to the rules, which is the verb 「行く」. I've bundled it with the regular exception verbs 「する」 and 「来る」 even though 「行く」 is a regular u-verb in all other conjugations.

Past tense conjugations for u-verbs
EndingNon-Pastchanges to...Past
す→したした


く→いた
ぐ→いだ
いた
いだ




む→んだ
ぶ→んだ
ぬ→んだ
んだ
んだ
んだ




る→った
う→った
つ→った
った
った
った
      
Exceptions
Non-PastPast
する
くる
行くった*
* exceptions particular to this conjugation

Examples

(1) 今日は、走った
- As for today, ran.

(2) 友達来た
- Friend is the one that came.

(3) 遊んだ
- I also played.

(4) 勉強は、した
- About homework, did it.

Past-negative tense for all verbs

The conjugation rules for the past-negative tense are the same for all verbs. You might have noticed that the negative tense of just about everything always end in 「ない」. The conjugation rule for the past-negative tense of verbs is pretty much the same as all the other negative tenses that end in 「ない」. You simply take the negative tense of any verb, remove the 「い」 from the 「ない」 ending, and replace it with 「かった」.
To change verbs into the past-negative tense

Examples

(1) アリスは食べなかった
- As for Alice, did not eat.

(2) ジムがしなかった
- Jim is the one that did not do.

(3) ボブも行かなかった
- Bob also did not go.

(4) お金なかった
- There was no money. (lit: As for money, did not exist.)

(5) 買わなかった
- As for me, did not buy.

(6) いなかった
- There was no cat. (lit: As for cat, did not exist.)

← Previous (Negative Verbs) Table of Contents Next (Particles 2) →
Go to Practice Exercises

This page has last been revised on 2007/1/3