Communication

let someone know

inform someone

To let someone know means to tell someone something, especially by giving them an update or asking them to contact you when something happens.

B1 very common mostly spoken

expression

Hear it in real life

Are we still meeting at six?

I am not sure, but I will let you know.

Play the conversation

Please let me know if you need any help with the report.

The mistake everyone makes

Not: I let him know to call me when he arrived.

Say: I told him to call me when he arrived.

Use 'let someone know' to pass on information, not as a substitute for 'tell someone to' when giving an instruction.

Build it

How it fits in a sentence.

let me know; let her know; let someone know if

Your turn: say it out loud

Please let me know if you need any help with the report.

Say it out loud two or three times, until it feels like yours.

let someone know

inform someone

“Please let me know if you need any help with the report.”

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