Example 1:
Seth: So what’s happening for Marty’s birthday on Friday?
John: We’re meeting at 6 pm for dinner at the new restaurant in downtown. Do you know which one it is?
Seth: Yes, I’ve seen it but I can’t remember the name. Anyway, I’ll be there! Keep me in the loop in case anything changes.
John: Sure thing. See you!
Example 2:
Marty: Hey, John! Thanks for organizing this awesome dinner for my birthday. I just wish Seth could have made it. I was hoping he would be here.
John: Oh, yeah. That’s totally my fault. I didn’t keep him in the loop once we changed locations. He didn’t know we moved the party. I’m sorry.
Marty: I’ll give him a call. We’re just starting, so there’s a chance he can still come.
Explanation:
To keep someone in the loop is to keep them informed/updated on a plan or project. In the first example, Seth asks John to keephim in the loop / keep him informed about Marty’s party. In example 2, John admits that he didn’t keep Seth in the loop, meaning he didn’t give him the updates on the party changes, so he missed it.
You can also use this expression with the be-verbinstead of keep.
Sean is in the loop. He has all the updated information.
Seth wasn’t in the loop. He didn’t get the new address for the party.
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