grammar review

• Noun-Clause Starters
  "We use various words to start noun clauses. . . .
  
  "These words include the word that, which in its role as a noun clause starter is not arelative pronoun, for it serves no grammatical role in the clause; it just starts the clause. For example: The committee stated that it would follow the agent's policy. Here the noun clause serves the noun role of direct object of the transitive verb stated. But a careful look at the clause reveals that the word that does not serve any role within the clause, other than simply to get it going.
  
  "Other noun clause starters do serve grammatical roles within the clause. For example: We know who caused all the trouble. Here the noun clause starter is the relative pronoun who. Notice that inside the noun clause who serves as the grammatical subject of the verbcaused.
  
  "Additional words serve as noun clause starters. A relative adverb can get one going: Howhe won the election mystified the pundits. So can a relative pronoun acting as an adjective: We know which career she will pursue. In these two sentences, how is an adverb modifying the verb won, and which is a relative-pronoun-adjective modifying the noun career."
  (C. Edward Good, A Grammar Book for You and I--Oops, Me!. Capital Books, 2002)



• "I have run,
  I have crawled,
  I have scaled these city walls,
  These city walls
  Only to be with you,
  Only to be with you.
  But I still haven't found what I'm looking for."
  (written and performed by U2, "I Still Haven't Found What I'm Looking For." The Joshua Tree, 1987)