English grammar questions, answered by Alan
- EC Teacher
- Posts: 12822
- Joined: Mon Dec 29, 2003 7:56 pm
- Status: English Teacher
- Location: Japan
Reasons already explained: the phrases that it introduces have an implicit agency that the true prepositional phrase can never have. Simply to label it a 'preposition' (which, admittedly, some reference works do) is, to my mind, sacrificing accuracy for the sake of simplicity!