Tree substitution grammar is a strict notational variant of the more
standard phrase structure grammar notation based on rewrite rules. The "Trees"
program works with tree substitution grammars, which may be extended in various ways, for example by the addition of adjunction or transformations. This
assignment is based on a grammar in which the substitution operation is supplemented with adjunction to handle modification by PPs and adverbs. Download the grammar tool
to do the exercise below.
The following sentences are structurally ambiguous. For
each one, use the grammar tool to construct two tree diagrams, one corresponding to each interpretation.
- I enthusiastically recommend this candidate with no qualifications.
- I like the house on the corner with no sign.
- John will answer the question precisely at noon.