I was just about to (do something).

Use this expression to talk about something that you were planning to do next. For example, at work:

A: Hey, are you busy?

B: Actually, I was just about to leave. What do you need?

This expression is useful in situations where you're a little bit late doing something:

A: Hey, can you send me those sales projections?

B: Yes, sorry. I was just about to do that.

This makes it seem like you were already planning to send them soon, even if this person didn't remind you.

This phrase appears in these lessons: