How to Say “I Can” or “Cannot” in Japanese – Expressing Ability to Do Something

Click Here to join our 30 day challenge to learn Hiragana

How to Express Ability to do Something in Japanese

1. Using the Sentence Pattern: V+ことができます

This structure is one of the most straightforward ways to express ability. It consists of three parts:

V + こと
The first part, V+こと, involves nominalizing the verb. If the verb is intransitive, like 泳(およ)ぐ (oyogu, swim), you simply add “こと” to the plain form of the verb to turn it into a noun.
Example: 泳ぐこと (to swim)

When expressing something that you can or cannot do in Japanese, you may use the following pattern:

V+ことができます
(Verb + koto ga dekimasu)
“can do (something)….

Japanese Sentence Pattern, image, photo, picture, illustration

Japanese Sentence Pattern

V+こと

For transitive verbs (verbs that take an object), you need to place the object with the particle before the verb and then add “こと” at the end.
Example: 絵(え)を描(か)く e o kaku, to draw a picture.
→ 絵を描くこと (the act of drawing a picture)

が (Particle)
The particle here acts as a subtopic marker for the nominalized verb (V+こと). It’s used to indicate the ability to perform the specific action mentioned.

The particle “が ” acts as a subtopic marker in the sentence. In this case, the subtopic is the nominalized action V+こと. Click here to learn more about this paticle

できます (Verb)
The verb できます means “can” in Japanese. Its plain form is できる. If you want to express inability, change できます to its negative form: できません (cannot).

Complete example sentence

私(わたし)はフランス語(ご)を話(はな)すことができます。
Watashi wa furansugoohanasukoto ga dekimasu
I can speak French.

鈴木(すずき)さんは走(hashiru)ることができません。
Suzukisan wa hashirukoto ga dekimasen
Suzuki cannot run.

Asking & Answering to a Question With できる

When asking others whether he/she can do something, simply add “か” at the back of the sentence
When you are asked a can/cannot question, simple ways to answer are: はい、できます (Yes, I can) or いいえ、できません(No, I cannot)

Example sentences:

キムさんは弁当(べんとう)を作(つく)ることができますか。
Kimusan wa bentou o tsukurukoto ga dekimasuka
Kim, can you make bentos?

はい、できます。
Hai, dekimasu
Yes, I can.

ペンギンは飛(と)ぶことができますか。
Pengin wa tobukuto ga dekimasuk
Can penguins fly?

いいえ、できません。
Iie, Dekimasen
No, they can’t.

Using Potential Japanese Verbs

Another way to express can or cannot do something is by using potential verbs.

Potential Verb Transformation Rule

Group 1: Change the final vowel to the one on the “え column” of the same role then add “る” to the back.
Group 2: Remove “る” at the back and add “られる” (“ら” is sometimes omitted in oral Japanese)
Group 3: する ―できる 来るー来(こ)られる
Japanese Potential Verbs, image, photo, picture, illustration

Japanese Potential Verbs

Example Sentences

コンビニでATM が使(つか)えます.
Conbini dewa ATM ga tsukaemasu
ATM can be used at a convenience store.

レストランでおいしい料理(りょうり)が食(た)べられます.
Resutoran de oishiiryouri ga taberaremasu
You can have delicious food at a restaurant.

私(わたし)は家(いえ)で勉強(べんきょう)できません.
Watashi wa iede benkyoudekimasen
I can’t study at home.

Now that you have learned the 2 ways of expressing ability in  Japanese. What about asking the 5W1H questions in Japanese?

 

 

If you are interested in studying Japanese in Tokyo, find out more about our school by filling out the form below.


Test your Japanese level!


Do a self-test to see which course fits you.

Check your level