Learn English – “One of THOSE days” vs “one of THESE days”

demonstrativedeterminersphrase-choicephrase-usageusage

I don't know exactly when we'll go but we really must visit them one
of these / one of those days.

When should we use "one of these days" and "one of those days"?

Best Answer

One of these days

One of those days

These are idioms.

The former means sometime in the near future. So you can say "we really must visit them one of these days".

The latter (one of those days) means a bad day; a day when everything goes wrong.

I missed breakfast, got late to work, and got caught in the rain at lunchtime - it was one of those days! (The Free Dictionary).

It looks like it's going to be one of those days (McMillan).

So you shouldn't use this idiom in your sentence presented.

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