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Is it correct to use “Time flies so fast”?
This is correct

See below for usage and alternatives.

Time flies so fast

Additional information about
Time flies so fast


This is a common idiom used in English to indicate that time seems to pass more quickly in certain situations.


Many native English speakers use this phrase, and it is perfectly correct. However, in more formal situations, it is better to replace the word fast with quickly.

Preferred Phrase

Time flies so quickly


Time flies quickly.

The time has flown.

Time really flies.

The years have passed quickly.


Time flies so fast when you're having fun!

It's been so long since I've seen you -- I can't believe how fast the time flies!

My baby is already starting school; time flies so fast!

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