What is a letter? Give the name and the sound of each of the letters in the three following words: letters, name, sound. Into what classes are letters divided? Define each class. Name the vowels. What is a word? What is artificial language? What is English Grammar? What is a sentence? What is the difference between the two expressions, ripe apples and apples are ripe? What two parts must every sentence have? Define each. What is the analysis of a sentence? What is a diagram? What are parts of speech? How many parts of speech are there? Give an example of each. What is a noun? What is a verb? What must every predicate contain? What is a pronoun? What is a modifier? What is an adjective? What adjectives are sometimes called articles? When is a used? When is an used? Illustrate. Give an example of one modifier joined to another. What is an adverb? What is a phrase? What is a preposition? What is a conjunction? What is an interjection? Give four rules for the use of capital letters (Lessons 8, 15, 19, 87). Give two rules for the use of the period, one for the exclamation point, and one for the interrogation point (Lessons 8, 37, 63).