Sentence examples for last that long from inspiring English sources

"last that long" is a correct and usable phrase in written English.
It is commonly used to describe the duration or longevity of something. Example: I can't believe my phone battery lasts that long on a single charge. (Here, the phrase is used to describe the duration of the battery's charge.) Our relationship didn't last that long, but it was still meaningful. (Here, the phrase is used to describe the duration of the relationship.) I doubt that sandwich will last that long in the fridge. (Here, the phrase is used to describe the longevity of the sandwich in the fridge.).