JLPT N5 Grammar (cha ikenai / ja ikenai)

Meaning

must not do (spoken Japanese)

How to use

Verb ちゃだめ
ちゃいけない
ちゃいけません
Verb じゃダメ
じゃいけない
じゃいけません
jlpt-n5-grammar-meaning-ちゃいけない-じゃいけない-cha-ikenai-ja-dame-文法例文

Learn Japanese grammar: (cha ikenai) / (cha dame) / (ja ikenai) / (ja dame). Meaning: must not; may not; cannot (spoken Japanese).

This grammar is a more casual way to say we should not do / may not do something. To be more formal, you can use .

Which to use: ちゃ VS じゃ

  • Use the verb’s て form, but then remove the て
    • たべる -> たべて -> たべ
    • “taberu” -> “tabete” -> “tabe cha”

  • If the て form is で, then ちゃ turns to じゃ
    • のむ -> のんで -> のん
    • “nomu” -> “nonde” -> “nonja”

3 Main Ending Patterns

  • (dame) = standard, casual
  • (ikenai) = standard, casual
  • (ikemasen) = same, but more formal

cha ikenai ja dame ちゃいけない じゃだめ jlpt n5 grammar meaning 文法例文 learn japanese flashcards

Click the image to download the flashcard.

Download all N5 grammar flashcards.

Supporters on Patreon can download our full N5 Grammar Master Complete Study Guide!

become a patron

Become a JLPT Sensei member on Patreon for extra bonus downloads.

- Example Sentences

Each example sentence includes a Japanese hint, the romaji reading, and the English translation.

Click the below red button to toggle off and and on all of the hints, and you can click on the buttons individually to show only the ones you want to see.

Example #1

ねるまえにスマホをみちゃだめよ。
neru mae ni sumaho o micha dame yo.
You shouldn't look at your smartphone before going to bed.
Example #2

ここはきけんなので、はいっちゃだめだよ。
koko wa kiken nano de, haiccha dame da yo.
This area is dangerous, so you're not allowed to enter.
Example #3

やっちゃいけないことをやっちゃった。
yaccha ikenai koto o yacchatta.
I did something I shouldn't have...
Example #4

じしんをなくしちゃいけません!
jishin o naku shicha ikemasen!
You mustn't lose confidence!
Example #5

そんなにじゅぎょうをさぼっちゃだめよ。
sonna ni jugyou o saboccha dame yo.
You shouldn't skip class so much.
Example #6

かれをしにょうしちゃいけない。
kare o shinyou shicha ikenai.
We cannot trust him.
Example #7

あかしんごうをむししちゃいけません。
aka shingou o mushi shicha ikemasen.
You must not ignore red lights!
Example #8

やさいをたべるまでデザートをたべちゃいけないよ。
yasai o taberu made dezaato o tabecha ikenai yo.
No eating dessert until you finish eating your vegetables.
Example #9

こどものまえにわるいことばをいっちゃいけません。
kodomo no mae ni warui kotoba o iccha ikemasen.
We must not say bad words in front of children.
Example #10

はたちみまんのひとはおさけをのんじゃいけません。
hatachi miman no hito wa osake o nonja ikemasen.
People under the age of 20 cannot drink alcohol.

Vocabulary List

KanjiKanaEnglish
寝るねるto sleep
前にまえにbefore
スマフォsmart phone
見るみるto look
危険きけんdangerous
入るはいるto enter
授業じゅぎょうclass; lecture
さぼるto skip
かれhim
信用しんようtrust
野菜やさいvegetables
食べるたべるto eat
やるto do
自信じしんconfidence
無くするなくするto lose
赤信号あかしんごうred light
無視むしto ignore
子供こどもchildren; child
悪いわるいbad
言葉ことばword; words
言ういうto say
20歳はたち20 years old (adult in Japan)
未満みまんnot yet
お酒おさけalcahol
飲むのむto drink

View all JLPT N5 Vocabulary Lessons

JLPT N5 vocabulary list

View all JLPT N5 Grammar Lessons

JLPT N5 grammar list

Recommended JLPT N5 Books

Nihongo So-matome: JLPT N5

This book covers everything you need to pass the JLPT N5 in just 6 weeks! (Kanji, Vocabulary, Grammar, Reading Comprehension, Listening Comprehension)
See price on Amazon

GENKI I: An Integrated Course in Elementary Japanese

This is the best all around book for beginners learning Japanese in English. I used this in my first year studying Japanese. I found it to be far better and easier to use than the many other books I was using.
See price on Amazon

Jlpt N5 Japanese Lauguage Proficiency Test Official Practice Test

This is the official practice test of the JLPT N5. I highly recommend doing at least 1 practice test before taking the real test.
See price on Amazon

Jlpt N5 Japanese Lauguage Proficiency Test Official Practice Test (NEW 2018)

This is the new version of the official JLPT N5 practice test. If you've already taken the old practice test, this is a good option to practice with some different questions.
See price on Amazon