Unit 4 Topic 1 Plants and animals are important to us Section B教学案例The main activities are 1a and 2. 本课重点活动是1a和2。. Teaching aims and demands 教学目标1. Learn some useful words and expressions:above, plant, joy, rose, snake, fox, frog, feed, feed on, discuss2. Go on learning comparative and superlative degrees of adjectives:(1) I think animals are more interesting. (2) I like plants better. I think roses are the most beautiful of all the flowers.(3) I like cats best because they are