Find comparative forms of adjectives in the text of the conversation. Study the information in the Think about grammar section and explain how these comparatives were formed. Give comments on their spelling.

longer is formed by adding -er to the end of the adjective long. This follows the rule for one-syllable adjectives.
bigger is formed by doubling the last consonant and adding -er to the end of the adjective big. This follows the rule for one-syllable adjectives that end in a vowel + consonant.
newer is formed by adding -er to the end of the adjective new. This follows the rule for one-syllable adjectives.
easier is formed by changing the -y to -i and adding -er to the end of the adjective easy. This follows the rule for two-syllable adjectives ending in -y.
more boring is formed by adding more before the adjective boring. This follows the rule for two or more syllable adjectives.
more interesting is formed by adding more before the adjective interesting. This follows the rule for two or more syllable adjectives.
better is an irregular comparative form of the adjective good. The spelling changes completely.
worse is an irregular comparative form of the adjective bad. The spelling changes completely.