1Unit 7 Seasons Period 2 Reading 重点单词1butterfly n. 蝴蝶2shower n. 阵雨;阵雪3memory n. 记忆,回忆4stream n. 小河,溪流5shade n. 阴凉处,树荫处6pile n. 堆7upon(on) prep. 在之上8harvest vt. & vi. 收割,收获9crop n. 庄稼,收成10as conj. 当时;随着11temperature n. 温度12drop vi. & vt. 下降,落下13rise vi. 上升;升起重点短语1be full of 充满22play among flowers 在花丛中嬉戏3be busy harvesting crops 忙于收割庄稼4on a hot summer afternoon 在一个炎热夏季的午后5drop below zero 降到零度以下6forget to do sth 忘记要做某事7cover the whole earth 覆盖整个地面8fall into piles 掉落成堆