In Numbers^x, Past tenses^x, Inflections^x

For my home grammar assignment I am to "describe the form of the verb phrases in the following sentences (:finiteness, tense, modality, aspect, voice): 1. The house had been painted a bright red before it was sold. 2. Pigeons will be nesting on the statue's head. 3. It is good to have seen...

1) Derivation often changes the word's lexical category, but not always: great (adjective) => great+ly => greatly (adverb) dog (noun) => dog + house => doghouse (noun) 2) Inflection doesn't change the word's lexical category. It adds meaning: number, person, tense: Number: dog (singular...