5. The suffix -ity can also be added to bound stems to form nouns. Analyze each of the following nouns into bound stem plus suffix. They all combine by simple addition:
= Bound stem + -ity
= dign + ity
= humil + ity
= abli + ity
= etern + ity
= quant + ity
= qual + ity
= char + ity
= sanct + ity
= necess + ity
= capac + ity
= veloc + ity
= celebr + ity
6. Six of the twelve words in 5 have short vowels at the head of a VCV string that is right in front of the suffix -ity. List the six below:
Word Blocks. Sort the words in the blocks of the pyramids into the two rows of blocks under each pyramid and you will make two words: The first word will be an adjective. The second word will be a noun made of the first word plus the suffix -ity. When you add the suffix -ity in the second word, the stress will shift to the vowel right in front of the suffix. Mark the stress in each word you make:
Word One: Adjective that means “slow to learn; not intelligent”:
Word Two: Adjective + ity = Noun that means “the condition of being slow to learn and not intelligent”:
Word One: Adjective meaning “known by all or most people; open”:
Word Two: Adjective + ity = Noun meaning “information that brings something to the attention of many people”:
1. The main point of this lesson is to reinforce the idea that the Suffix -ity Rule preempts, or overrules, the VCV pattern. Another point that is illustrated here, however, and that you may want to point out to the students, is that the Suffix -ity Rule also stipulates that the vowel in front of the suffix -ity will always be stressed — stressed and short. That stipulation explains the stress shift in pairs like mental and mentality In mental the stress is on the <e>, me´ntal, but when the suffix -ity is added, the stress shifts to the vowel right in front of the -ity, the <a>: menta´lity. You might ask the students to find other instances of stress shifting in this lesson. Instances are the following: liberal/liberality, stupid/stupidity, public/publicity (which also involves the shift from hard to soft <c>), mental/mentality, feminine/femininity, final/finality, rational/rationality, local/locality, solemn/solemnity.
Item 4: You may find it useful to point out to the students that some of the bound bases here are close relatives to some free bases: humil with humble, abil with able, clar with clear, simplic with simple.
Item 5: In charity the <a> spells a sound that in some dialects will sound more like [e] than [a]. In either case it is short. Most dictionaries show it as [a]; Webster's Third International shows both [a] and [e]. For more on the effects the sound [r] has on vowels immediately in front of it, see AES, pp. 307-26.
Word Blocks. The Word Blocks gives the students a chance to work with words that contain the suffix -ity and that undergo the stress shift discussed above.