一、单元写作准备。

Sports items: basketball, football, volleyball, tennis racket, running shoes, swimming cap, gym clothes, badminton shuttlecock, table tennis bat, yoga mat
Possessive pronouns: mine, yours, his, hers, its, ours, theirs
Frequency words: always, usually, often, sometimes, never, hardly ever, once a week, twice a month
Kinds of exercise: run, swim, play basketball, play football, do yoga, ride a bike, go jogging, play tennis, do morning exercises, climb mountains

1. 回忆Unit 3中出现的运动物品名词，如球类、运动装备等；2. 确定名词性物主代词的基本形式；3. 列举本单元学习的频率副词；4. 总结有关运动的动词及短语。