Use 'leave' to express movement away from a place.

 

I left the house at five o'clock.

She always leaves for work at seven in the morning.

 

Important Note: 'Leave' can also express the idea that someone has forgotten or placed something in another place.

 

She left her keys on the table.

I usually leave the papers in the top drawer.

 

Verb Forms: Leave - Left - Left - Leaving

 

Use 'let' to express the idea that someone allows another person do something.

 

I let them leave work early.

She lets her children watch TV on Saturdays.

 

Important Note: Remember that 'let' is always followed by an object and a verb in the base form without 'to'.

 

Verb Forms: Let - Let - Let - Letting