Translation guide
The English phrase 'make sure' is used to express ensuring, verifying, or confirming something. In Japanese, there is no single direct equivalent; instead, various verbs, phrases, and sentence patterns are used depending on the nuance.
To take action so that something happens or is done; to make certain of something.
This pattern means 'to make sure to do something' or 'to see to it that something happens'. It implies conscious effort or arrangement.
Please make sure you don't leave anything behind.
I'll make sure not to be late tomorrow.
This verb means 'to check' or 'to verify'. It is used when you want to confirm a fact or situation.
Please make sure of the departure time.
A more formal verb meaning 'to confirm' or 'to check'. Often used in business or official contexts.
Please make sure of the contract details.
This phrase means 'to do without fail' or 'to be sure to do'. It emphasizes certainty and determination.
Make sure to lock the door.
A casual phrase meaning 'to do properly' or 'to make sure to do'. It implies doing something thoroughly or correctly.
Make sure you do your homework.
To confirm that something is true, correct, or in a certain state.
The most common verb for 'to check' or 'to verify'. Used in everyday situations.
I made sure the gas was off.
A more formal synonym of 確かめる, often used in written or business contexts.
I made sure of the email (I checked the email).
Means 'to look up' or 'to investigate'. Used when you need to find out information.
A pattern specifically for 'make sure whether or not'. Used for yes/no questions.
To guarantee or ensure that a certain condition is met.
A formal pattern meaning 'to confirm that...'. Often used in business or official settings.
Please make sure that everyone participates.
As above, this pattern can also be used for ensuring a condition, especially when it involves an action.
Emphasizes that something must be done without fail.
Make sure to submit the report.
Both mean 'to check' or 'to verify', but 確認する is more formal and often used in business or official contexts. 確かめる is more common in everyday speech.
I checked his phone number. (casual)
I will confirm your reservation. (formal)
Do not translate 'make sure' literally as 確かを作る or similar. It is not a direct translation and will not be understood.
Make sure you lock the door.
Using 必ず for emphasis
I'll make sure to call you tomorrow.
Please make sure the information is correct.
Please make sure whether he is coming or not.
電車の時間を調べておいて。
Make sure of the train schedule (look it up).
Make sure whether the door is closed or not.
Make sure the children can play safely.