airline n.航空公司;航线
典型例句:The United Airlines is the largest airline company in the world.
译文:美国联合航空公司是世界上最大的航空公司
巧记:air(空中)+line(线)=航线
airplane n.飞机
巧记:air(空中)+plane(飞机)=飞机
airport n.机场,航空站
典型例句:The enemy army invaded and bombed their important airports.
译文:敌军侵入并轰炸了他们的重要机场
巧记:air(飞机)+port(港口)=飞机场
alarm n.惊恐,忧虑;警报
alcohol n.酒精,乙醇
典型例句:If you want to be in shape,you must keep away from alcohol in any kind.
译文:如果你想保持健康,必须远离任何种类的酒
导学:该词属于常考词汇,据统计,在历年的四六级考试中出现次数不少于3次,尤其常出现在听力、阅读部分。
alert a.反应敏捷,活跃;警惕的
历年真题:One should remain alert when the disease is spreading.
译文:在疾病传播时人人都要保持警惕。
导学:此词的考试题型以短语搭配为主,如be on the alert(注意,提防,警戒);alert to do(留心做)。
想一想:①alertly ②alertness
Key: ①ad.提高警觉地,留意地 ②n.警戒,机敏
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