sing 唱study 学习start 开始smile 微笑see 看见smoke 抽烟smell 闻snatch 夺取snow 下雪sleep 睡觉sharpen 磨快；削尖scare 惊吓scream 尖叫search 寻找seem 好像seat 使...就做sell 卖seize 抓住select 挑选send ...