too difficult to / for ??

too difficult to:

to do something， usually followed by an action

e.g: This task is too difficult to complete.

too difficult for:

for someone, usually followed by a person

e.g: This task is too difficult for him.

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too difficult to + verb
eg: the things are too difficult to finish

too difficult for + noun
eg: the job is too diffucult for her to finish