3.2 Theoretical Aspects of Movement
Consider a sentence such as the following:
(46) | who does Harry hate? |
The verb hate typically has two arguments, experiencer and theme, and is transitive with the theme as its object:
(47) | Harry hates him |
But in (46) the object appears to be missing. This is not a case of an ‘understood’ object, where the argument is present at a semantic level, as it is fairly obvious that the interrogative pronoun who has the grammatical function of the object. Yet, this pronoun is not sitting in the canonical object position, the complement of the verb, directly after it. Indeed, the interrogative pronoun is occupying a position that no other object can occupy:
(48) | *him does Harry hate |
The obvious questions to ask are: why is the object sitting at the front of the sentence in (46)?; and how is the interrogative pronoun interpreted as an object when it is not sitting in an object position? As to the first question the obvious answer is that it has something to do with the interrogative nature of the clause: the clause is a question and interrogative clauses of this kind start with an interrogative phrase such as who.
The second question is a little more difficult to answer. In English, an element typically is interpreted as object depending on the position it occupies:
(49) | a | Harry hates him |
b | He hates Harry |
In (49a), the pronoun him is interpreted as the object as it is sitting in the complement position. Harry on the other hand is the subject and is sitting in a specifier position. In (49b) it is the other way round: He is the subject, sitting in the specifier position, and Harry is the object, sitting in the complement position. If who in (46) is interpreted as object, we should expect it to occupy the object position. The grammar that we will be adopting in this book assumes that this is exactly the case: the interrogative pronoun does indeed sit in the object position at some level of description of this sentence. However, at another level of description, the interrogative pronoun is in another position, one at the beginning of the clause. The assumption then is that this element undergoes a movement which takes it from the object position into the sentence initial position.
Movement processes turn out to be a central aspect of grammar in many languages and we will see many instances of it in this book. In this section we will introduce the main theoretical considerations relating to movement processes and which play a role in the description of virtually all English sentences.
3.2.1 Move α
3.2.2 D-structure and S-structure
3.2.2.1 D-structure and Theta Theory
3.2.2.2 S-structure and Case Theory
3.2.3 Traces
3.2.4 Locality Restrictions on movement