hard to find
Population ecology on snakes is particularly difficult because they're really hard to find. This sentence comes from http://www.science.gc.ca/default.asp?Lang=En&n=94DF84A8-1.
I was wondering if infinitive " to find " in clasuse " because they are really hard to find" acts as an adverb ?
If infinitive function is an adverb , it modifies an adjective " hard" , then it can match which of them " when , where , how, why"
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