Islands -

Subjects usually provide "old" information (the background). Trying to pull a "new" focus out of a backgrounded subject creates a mental clash.

Once a subject moves to its final position, its internal structure is "frozen" and cannot be accessed.

Many generative grammarians argue that islands are a result of the of human language. Islands

Not all subject islands are equally strong. Some violations become acceptable if they are "saved" by a second gap in the sentence, known as a .

Some researchers suggest the problem isn't grammar, but . Subjects usually provide "old" information (the background)

The second gap is inside an "island," but the first "licit" gap makes the whole sentence feel okay to a native speaker.

"*Who did [a picture of ___] hang on the wall?" (The phrase is the subject). Why Do Islands Exist? Many generative grammarians argue that islands are a

A occurs when the grammatical subject of a sentence acts as one of these barriers. In English, you can usually extract a word from the object of a sentence, but doing the same to the subject results in an ill-formed "island violation".