PHONOLOGY: Phonological contraction of want and to to wanna, going to to gonna, etc. In syntax this phenomenon is used in an argument to make a distinction between wh-trace and other empty elements, such as NP-trace or PRO.
(i) Why do you want PRO to go -> ... wanna go (ii) Whoi do you want ti to go -> *... wanna goThe intervening PRO subject in (i) does not block wanna-contraction, but the wh-trace in (ii) does.
|LIT.||Lasnik, H. and M. Saito (1984)|
Riemsdijk, H. van and E. Williams (1986)