(22) Which is the correct way to say it: worth to do or worth doing? - Quora

(22) Which is the correct way to say it: worth to do or worth doing? - Quora

Something is worth doing, worth seeing, worth remembering, and so on. The whole expression "worth ____ing" behaves as an adjective.

E.g. That rule is worth remembering. That pie was not worth eating.

"Worth to do" is never part of a grammatically correct expression. What you may have heard is "It's worth it to do," and not noticed the "it," because it is unstressed.

"Worth it" is an idiomatic phrase that functions as an adjective meaning "worth some unspecified or implicit cost, discomfort, or effort.

Examples

That dish took a long time to cook, but the result was worth it! (worth the time it took)

This brand of shampoo is expensive but worth it. (worth the extra expense)

Now, there is a transformation in English under which

(gerund) is (adjective) becomes It's (adjective)(infinitive).

Under this transformation,

"Cleaning up after dinner is nice" becomes "It's nice to clean up after dinner."

"Cleaning up after dinner is useless" becomes "It's useless to clean up after dinner."

and

"Cleaning up after dinner is worth it" becomes "It's worth it to clean up after dinner."

This is how we end up with both "It's worth doing your homework," and "It's worth it to do your homework." But never, ever say, "It's worth to do your homework."

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