How to Memorize

do/change it on the fly

Analysis

To do something 'on the fly' is to do something in a way that isn't planned. Similar in meaning to 'improvise' or 'make it up as you go along'. It can also mean to do something or change plans while you are in motion or while something is already in progress. "We didn't plan our route, we just drove along the coast and stopped in different places on the fly." "My grandmother is a great cook, she never follows recipes she just adds things on the fly as she goes." This is an idiomatic expression used more often in social contexts.

Social Examples (Advance)

1. When Richard was too sick to give the presentation yesterday, I had to deliver it on the fly, so it wasn't my best work.
2. To save time, let's begin working and solve any problems on the fly as we go along.
3. The photographer will take pictures on the fly throughout the night.

Professional Examples (Advance)

1. When Richard was too sick to give the presentation yesterday, I had to deliver it on the fly, so it wasn't my best work.
2. I'm a great believer in planning. I like to organise myself ahead of time and avoid getting caught out on the fly.

Further Suggestions