Islands ★ Free Forever

Some researchers suggest the problem isn't grammar, but .

"Who did you see [a picture of ___]?" (The phrase is the object). Islands

The second gap is inside an "island," but the first "licit" gap makes the whole sentence feel okay to a native speaker. Some researchers suggest the problem isn't grammar, but

Linguists debate whether these "walls" are built into our mental grammar or caused by how we process information. 1. The Architectural View Islands

"Which book did you file ___ [without reading ___]?"

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