- Walking back home is gonna take longer than I presumed
- Walking back home is gonna take shorter than I presumed
I'm a bit confused here, is sentence #2 valid?
It certainly doesn't sound right.
If sentence #2 is invalid, how could i rephrase it?
I'm a bit confused here, is sentence #2 valid?
It certainly doesn't sound right.
If sentence #2 is invalid, how could i rephrase it?
The sentence #2 is not what is the plain opposite of sentence #1. Not only that I'm afraid to say there is no direct opposite of "take longer" as in sentence no #1 - or anything I am aware of, that is. And hence, sentence no #2 is not correct.
You could say
Walking back home wont take as long as you expected.
Walking back home will be quicker than you expected