Assignment 3, Linguist 503 
                         Due: Feb. 28, 2003 




1. Provide derivations for the following sentences:

a. The door might have been opened.
b. The doors had both been opened. 

2. Construct a derivation for the following example. 

a. The doors had been both opened. 

What can we conclude about the intermediate positions available to 
"the doors" from this example? 

The following example is ungrammatical.

b. *The doors had been opened both. 

What can we conclude about the intermediate positions available to 
"the doors" from this example? How does this fit with our prior assumptions
about floating quantifiers?