 The discussion so far has been at a rather high level of abstraction. It may be useful to contrast the three tendencies by looking at how they each would analyze a particular linguistic phenomenon. We have selected the syntax of double-object clauses like Hand the guard your pass (also called ditransitive clauses), in which the verb is immediately followed by a sequence of two noun phrases, the first typically denoting a recipient and the second something transferred. For many such clauses there is an alternative way of expressing roughly the same thing: for Hand the guard your pass there is the alternative Hand your pass to the guard, in which the verb is followed by a single object noun phrase and the recipient is expressed after that by a preposition phrase with to. We will call these recipient-PP clauses.