二. [重点词组] (Key Phrases)
1. 形容词比较级：taller, shorter, thinner, longer, heavier, calmer, wilder,
quieter, funnier, smarter, more athletic, more popular
2. more, than, twin, both,
3. twin sister, look the same, look different, go to parties, in common,
be good at, make sb. do sth, elementary school, enjoy doing sth.,
