精选优质文档-倾情为你奉上1. 铃响(ring)后,开始(begin)唱歌(sing),游泳(swim)时,不要喝(drink)太多的水,否则会下沉(sink)的。ring-rang-rung begin-began-begun sing-sang-sung swim-swam-swum drink-drank-drunk sink-sank-sunk2. 让(let)他关上(shut)门,放(put)下砍(cut)刀,安排(set)读(read)书,以免碰撞(hit)受伤(hurt)后,花钱(cost)。let-let-let put-put-put cut-cut-cut read-read-read hurt-hurt-hurt cost-cost-cost3. 长(grow)大后,才知道(know),不要乱扔(throw)乱吹(blow)乱画(draw)。grow-grew-grown know-knew-known throw-threw-thrown blow-blew-blowndraw-drew-drawn4.