infinitive clauses

William wants to go to Morocco. 

Stephanie wants [Stephanie] to be a firefighter.

>>The term equi is used to characterise any construction in which an overt NP in once clause and a covert NP in another clause are identical.

>>In Stephanie wants to be a firefighter, the equi is subject controlled; this means that the content of the lower, covert subject is determined by the content of the higher subject.  


Stephanie wants her son to be a firefighter. 

>>If the subject of the infinitive clause is different from that of the higher verb, the subject must be explicitly stated.