JAPANESE VERB

かくにんする

確認する

to check, to confirm

Conjugation

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Form	Polite	Plain
AffirmativeI check
NegativeI don’t check

finished actions

Form	Polite	Plain
AffirmativeI checked
NegativeI didn’t check

て形 · joining actions, “doing”, requests

可能形 · “can”

Form	Polite	Plain
AffirmativeI can check
NegativeI can’t check

たい形 · “want to”

Form	Polite	Plain
AffirmativeI want to check
NegativeI don’t want to check

意向形 · “let’s”, “I’ll”

Form	Polite	Plain
Let’slet’s check

条件形 · “if” and “when”

命令形 · from gentle to blunt

受身形・使役形 · “is done”, “make someone do”

Form	Polite	Plain
PassiveI am checked
CausativeI make someone check

One sentence for each tense, the way people say it.

Present and future

まいあさ、メールを かくにん します。

Every morning I check my email.
Past

よやくのじかんをでんわで かくにん した。

I confirmed the reservation time by phone.
Te-form

メールのないようを かくにん してください。

Please check the contents of the email.
Potential

このがめんでざんだかが かくにん できます。

You can check your balance on this screen.
Want to

しゅっぱつのまえにてんきを かくにん したい。

I want to check the weather before we leave.
Volitional

こたえをもういちど かくにん しよう。

Let's check the answers once more.
Conditional

ちゃんと かくにん すれば、ミスはへります。

If you check properly, mistakes go down.
Commands and requests

わすれものがないか、 かくにん しなさい。

Check that you haven't forgotten anything.
Passive and causative

ホテルでなまえとじゅうしょを かくにん された。

At the hotel they checked my name and address.

The same pattern, on other verbs: する verb.