Explain the term "A social butterfly"

It means a person who likes to attend parties and other social gatherings. Basically its a people person.

Some examples are, She's a true social butterfly and loves parties and social events. Or, you're the social butterfly who is attractive, smart and creative.

Hope this helped!

the sentence does not violate the phrase structure second rule (introduced by noam chomsky) because noun phrases consist of a determiner such as a, the or every, and a noun. in the sentence, the noun phrase the cake includes a determiner (the) and a noun (cake).

on the other hand, the first rule indicates that a sentence encloses a noun phrase, followed by a verb phrase. the example sentence can be analysed as follows:

john (n) + ate (v) + the (det) + cake (n).