Verb Conjugation「入る (はいる、hairu)」enter, will enter | Learn Japanese Grammar

Japanese verbs have conjugations.「入る (はいる、hairu)」is a verb and means “enter” or “will enter.” It can also be translated as “join” or “be in” depending on the sentence. We will teach you the conjugation on this page. You can also learn example sentences using verb conjugations.

When you do not know how to use the conjugation, please learn about it in our conversation lessons or our mail support. In our mail support, we check your Japanese every time. If you have an internet connection and a PC/smartphone, you can learn Japanese with us all over the world.
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Vocabulary Video

Before you learn the conjugations, please learn about the pronunciation of the verb in dictionary and polite forms.

Video: Coming soon

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Dictionary Form/ます Form

As you know, English tenses are roughly divided into present, future, and past tenses. However, it is said that Japanese tenses consist only of “Past Tense” and “Non-Past Tense.” Therefore, we used “Dictionary Form,” not “Present Tense” in this heading.
Japanese people use two types of language. One is “non-honorific language” and the other is “honorific language.” When we focus on these languages, “dictionary” and “plain” forms are in “non-honorific language.” “Polite form” is in honorific language.

English Meaning: enter, will enter

Positive	Conjugation	Romaji Reading
Dictionary & Plain Form	入はいる	hairu
ます & Polite Form	入ります	hairimasu

「辞書じしょ形けい (dictionary form)」is the original form. The technical term is for non-native Japanese speakers. Therefore, native Japanese usually do not know the word.「ます形けい (ます form)」is the polite form of a dictionary form. The term is also for non-native Japanese speakers.

I’m going to soak in a hot spring with Miho-san tomorrow.

明日あした美穂みほさんと一緒いっしょに温泉おんせんに入る。(Plain Form)
明日美穂さんと一緒に温泉に入ります。(Polite Form)

温泉に入る＝ soak in a hot spring　お風呂ふろに入る＝ take a bath

English Meaning: do not enter, will not enter

Negative	Conjugation	Romaji Reading
Plain Form	入はいらない	hairanai
Polite Form	入りません	hairimasen

I’m not going to soak in a hot spring with Miho-san tomorrow.

明日あした美穂みほさんと一緒いっしょに温泉おんせんに入らない。(Plain Form)
明日美穂さんと一緒に温泉に入りません。(Polite Form)

Past Tense

English Meaning: entered

The plain form is in “た form”. “た form” is also a technical term for non-native Japanese speakers. Therefore, native Japanese usually do not know the word.

Positive	Conjugation	Romaji Reading
た & Plain Form	入はいった	haitta
Polite Form	入りました	hairimashita

A ball hit the glass and cracked it.

ボールがガラスに当あたってひびが入った。(Plain Form)
ボールがガラスに当たってひびが入りました。(Polite Form)

ひびが入る＝ get cracked

English Meaning: did not enter

Negative	Conjugation	Romaji Reading
Plain Form	入はいらなかった	hairanakatta
Polite Form	入りませんでした	hairimasen deshita

Even though a ball hit the glass, it didn’t crack.

ボールがガラスに当あたってもひびは入らなかった。(Plain Form)
ボールががガラスに当たってもひびは入りませんでした。(Polite Form)

て Form

English Meaning: N/A

We cannot know the exact meaning without knowing the sentence and situation.

	Conjugation	Romaji Reading
て Form	入はいって	haitte

About the phrases「ている」and「ています」: Here
About the phrase「～てください。」: Here

I soaked in a hot spring bath with my father and drank milk.

父ちちと温泉おんせんに入って牛乳ぎゅうにゅうを飲のみました。(Polite Form)

We have a habit of drinking milk after we soak in a hot spring.

Volitional Form 1: Will, (Own) Intention, Determination

English Meaning: will enter

	Conjugation	Romaji Reading
Plain Form	入はいろう	hairō
Polite Form	N/A	N/A

This phrase is used only in plain form. This is because we use it when we talk to ourselves or think in our minds. When we talk or think to ourselves, we usually do not use the polite form.

I’ll join a movie club.

映画えいがサークルに入ろう。(Plain Form)

入る ＝ join, become a member

Volitional Form 2: Solicitation, Intention, Invitation

English Meaning: let’s enter

	Conjugation	Romaji Reading
Plain Form	入はいろう	hairō
Polite Form	入りましょう	hairimashō

Let’s enter the classroom as the class starts.

授業じゅぎょうが始はじまるので教室きょうしつに入ろう。(Plain Form)
授業が始まるので教室に入りましょう。(Polite Form)

Potential

English Meaning: can enter/be able to enter

Positive	Conjugation	Romaji Reading
Plain Form	入はいれる	haireru
Polite Form	入れます	hairemasu

My grandfather can join this nursing home from this month.

祖父そふは来月らいげつからこの老人ろうじんホームに入れる。(Plain Form)
祖父は来月からこの老人ホームに入れます。(Polite Form)

English Meaning: cannot enter/not able to enter

Negative	Conjugation	Romaji Reading
Plain Form	入はいれない	hairenai
Polite Form	入れません	hairemasen

My grandfather still can’t join that nursing home.

祖父そふはまだあそこの老人ろうじんホームには入れない。(Plain Form)
祖父はまだあそこの老人ホームには入れません。(Polite Form)

Imperative Form

English Meaning: enter! (order, command)

Positive	Conjugation	Romaji Reading
Plain Form	入はいれ	haire

Take a bath!

お風呂ふろへ入れ。(Plain Form)

“Imperative form” is used only in plain form and this phrase often becomes rude depending on the situation. Please show us your Japanese when you use it. We will check and teach suitable Japanese.
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Prohibition and Order

English Meaning: do not enter!

Negative	Conjugation	Romaji Reading
Plain Form	入はいるな	hairuna

Don’t get in the water because the waves are high!

波なみが高たかいので海うみに入るな。(Plain Form)

Conditional Form

English Meaning: if (subject) enter

Conjugation	Romaji Reading
入はいれば	haireba

If you enroll in a cram school, your grades will improve.

塾じゅくに入はいれば、成績せいせきが上あがるでしょう。(Polite Form)

Hypothetical/Definite Conditions, Sequence of Actions

English Meanings: if/when ~ enter, ~ entered and ~

The form「～たら」has different usages. It has other meanings except from those listed above. More explanations are in our conversation lessons or mail support.

Conjugation	Romaji Reading
入はいったら	haittara

Here is an example sentence wherein「たら」indicates a “sequence of actions.”

When I got in the water, fish were swimming.

海うみに入ったら、魚さかなが泳およいでいました。(Polite Form)

Causative Form

English Meaning: make/let/have (person) enter

Positive	Conjugation	Romaji Reading
Plain Form	入はいらせる	hairaseru
Polite Form	入らせます	hairasemasu

I’ll let my son join a soccer club.

息子むすこにサッカークラブに入らせる。(Plain Form)
息子にサッカークラブに入らせます。(Polite Form)

English Meaning: do not make/let/have (person) enter

Negative	Conjugation	Romaji Reading
Plain Form	入はいらせない	hairasenai
Polite Form	入らせません	hairasemasen

I won’t let my son join a soccer club.

息子むすこにサッカークラブに入らせない。 (Plain Form)
息子にサッカークラブに入らせません。(Polite Form)

To Learn Correct Verb Conjugations

Japanese verb conjugation is too complicated and there are many learners who use it incorrectly. Therefore, we provide lessons and services where we teach and correct your Japanese daily. If you want to know more about the details, please check out our website.
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