Verb | Nakereba ikemasen

• Introducing verb modification form

  ....なければいけません

• Learn how to use this form to express necessity or obligation.

IT'S A MUST!!

Lesson Overview

What is the
～なければいけません
form?

The verb modification form "～なければいけません" (nakereba ikemasen) in Japanese means "must", "need to" or "have to". It's used when there's something you must do, expressing a sense of obligation or necessity.

The "～なければ" (nakereba) part is a negative conditional form that means "if you don't do....", and
the "～いけません" (ikemasen) part is the negative potential form that means "cannot go." When you combine them together, it implies that if the action is not done, it's not acceptable or not good.

Example:

たべなければいけません Tabenakereba ikemasen → I must eat

​

VERB (ない nai form) + ければいけません kereba ikemasen

Conjugate the verb into their ない (nai) form, drop the い (i) and add ければいけません (kereba ikemasen)

• GROUP 1
  Drop ます (masu) → change the last "i" syllable to the "a" sounds of it's column → add ない (nai)

• GROUP 2
  Drop ます (masu) → add ない (nai)

• GROUP 3
  - します (shimasu)　→　しない (shinai)

  - きます (kimasu) 　→　こない (konai)

​

​GROUP 1

​Drop ます (masu), change the last "i" syllable to "a" sounds of it's column, and add ない (nai). After that drop the い (i) and add ければいけません (kereba ikemasen).

Example

いきます ikimasu　→　いき iki 　→　いか ika 　→　いかない ikanai
いかない　ikanai 　→　いかな　ikana　→　いかなければいけません
　　　　　　　　　　ikanakereba ikemasen

What is the ～なければいけません ....nakereba ikemasen form of this verb?

• たちます　tachimasu

• のみます　nomimasu

Answer on the zoom chat box!

Drag and Drop

"Drag and drop the step of conjugating this verb よみます (Yomimasu) to the "must" form."

​

Placeholder

→ ​

Placeholder

→ ​

Placeholder

→ ​

Placeholder

→ Yomanakereba ikemasen​ ​

Drag these tiles and drop them in the correct blank above

Yomi

Yoma

Yomanai

Yomana

Yomimasu

Yominai

Drag and Drop

What is the "must" form of the verb あるきます arukimasu

​

Placeholder

nakereba ikemasen

Drag these tiles and drop them in the correct blank above

aruka

aruku

aruki

arukanai

arukana

Drag and Drop

What is the "must" form of the verb かいます kaimasu

​

Placeholder

nakereba ikemasen

Drag these tiles and drop them in the correct blank above

kawa

kaa

kai

kawana

kaina

​

​GROUP 2

​Drop ます (masu) and add ない (nai). After that drop the い (i) and add ければいけません (kereba ikemasen).

Example

たべます tabemasu　→　たべ tabe 　→　たべない tabenai
たべない　tabenai 　→　たべな　tabena　→　たべなければいけません
　　　　　　　　　　tabenakereba ikemasen

What is the ～なければいけません ....nakereba ikemasen form of this verb?

• みます　　mimasu

• おきます　okimasu

Answer on the zoom chat box!

Drag and Drop

"Drag and drop the step of conjugating this verb きます (Kimasu) to the "must" form."

​

Placeholder

　→　​

Placeholder

　→　​

Placeholder

　→　Kinakereba ikemasen

Drag these tiles and drop them in the correct blank above

Kina

Kinai

Ki

Kiru

Kira

Kimasu

Ku

Drag and Drop

What is the "must" form of the verb おきます Okimasu

​

Placeholder

nakereba ikemasen​

Drag these tiles and drop them in the correct blank above

Okina

Okana

Oka

Oki

Drag and Drop

What is the "must" form of the verb きめます Kimemasu

​

Placeholder

nakereba ikemasen​

Drag these tiles and drop them in the correct blank above

Kimena

Ki

Kima

Kimana

Kime

Fill in the Blanks

What is the "must" form of this verb

Group 2 →　Tabemasu

Fill in the Blanks

What is the "must" form of this verb

Group 1 →　Kaimasu

Fill in the Blanks

What is the "must" form of this verb

Group 1 →　Ikimasu

Fill in the Blanks

What is the "must" form of this verb

Group 1 →　Tsukurimasu

Open Ended

How confident are you with this verb conjugation?