必修四（Unit2-Unit3）1.减少2.出口3.使信服4.使欢乐，款待5.导演，指挥6.遗憾7.斗争，努力8.自由9.时刻，场合10.十年11.战胜，克服12.低语13.滑行14.评论15.反应16.因此17.扩大，伸展18.发现19.装备20.生产21.使迷惑22.遍及，贯穿23.不幸地24.失败25.脏或乱的状态26.解释27.信心28.特殊的29.用旧的30.平常的31.幽默32.化学的33.土壤34.总结，摘要35.饥饿36.industrial37.circulate38.nationality39.mineral40.outstanding41.astonishing42.optimism43.drunk44.amuse45.detective46.statistic47.underline48.battle49.occupation50.enjoyment51.performer52.brighten53.depressed54.vast55.actress56.leather57.snowstorm58.homeless59.entertaining60.bored61.comedy62.skim63.nutrition64.root65.personality66.disturbing67.super68.crop短语：1.摆脱，出去2.集中3.对….满意4.对…满足5.挑出6.导致7.直到现在8.幸亏，由于9.宁愿10.切断11.使…免受12.逐渐增强
