what does an adj. modify? also, how do you know when a sentence is inverted?

Adjectives modify nouns.

http://www.chompchomp.com/terms/adjective.htm

An inverted sentence can be spotted because the normal word order is reversed. Usually, English sentences have the subject first, then the main verb and anything that goes with it. in an inverted sentence, the main verb and the subject are reversed.

There are some good examples in here:
http://en.wikipedia.org/wiki/Inverted_sentence

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