1、选择性必修一选择性必修一unit 1unit 1单词讲解单词讲解crucial至关重要的；关键性的（adj）crucial关键性地；至关重要地(adj)cruciallybe crucial to/for 对是重要的vital/key/importantcrucial至关重要的；关键性的（adj）Teachers are crucial to the success of the school.She played a crucial role in the meeting.vital至关重要的（crucial）必不可少的 （necessary）充满生机的 （energetic）1.Oxyge
2、n is vital to life.2.Exercise can keep you young and energetic.3.The sciences are a vital part of the school curriculum.指出vital在句子中的含义必不可少的充满活力的重要的commit犯（罪或错等）（commit crimes）自杀（commit suicide）承诺；保证忠于；全心全意投入commit oneself to sth./doing sth.致力于去做某事academic学业的；学术的（adj）academic研究院；学会（n.）academyShe rece
3、ived awards for her academic achievements.objective目标；目的（n.）客观的（adj）subjective主观的（adj）evaluate评价；评估（v.）evaluative 评估的;评价的（adj）evaluator评估家（n）property财产；性质；特征（n.）We are not responsible for the loss of personal property.He was trying to sell stolen property.distinct清晰的；清楚的；有区别的;不同的（adj.）There are thre
4、e distinct categories.boil沸腾；煮开；烧开（n./v.）boiling water 开水；沸水boiled water 凉开白；白开水liquid液体(的)（n./adj.）gas 气体solid 固体obtain获得；赢得Knowledge is kind of difficult to obtain.同义词：get;acquire acknowledge承认 doing sth.(公开)感谢 微笑、挥手等）致意;They acknowledged him as their leader.She acknowledged his greeting with a smile.He acknowledged the gift with a card.承认致意感谢defeat失败；挫败
