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1、Welcome UnitVocabularyexchange1.exchange rate 汇率2.exchange students (两国)交换生3.exchange A for B 把A换成Be.g.Id like to exchangesome pounds for dollars.我想把一些英镑兑换成美金。4.in exchange for 作为(对的)交换e.g.He gave me an apple in exchange for a cake.他给我一个苹果，换一块蛋糕。5.exchange with sb.和某人交换lecture1.give a lecture 作演讲2.i
2、n the lecture hall 在报告厅design1.design to do sth.打算做2.be designed for sb./sth.为.设计的e.g.The course is designed forbeginners.这门课程是为初学者设计的。e.g.He designs to become a musician.他立志成为一个音乐家。anxious1.be anxious about sth.担心某事2.be anxious for sb./sth.为某人担心/渴望某事物3.be anxious to do sth.渴望/急于做某事e.g.Parents arena
3、turally anxious for their children.父母自然为儿女担心。e.g.She was very anxious to get away from cities and back to nature.他特别渴望离开城市，回归自然。e.g.They are anxious about their sons health.他们很担心儿子的健康。anxiety n.忧虑，焦虑，担心with anxiety 焦虑地=anxiously adv.焦急地，忧虑地annoyed1.be annoyed with sb.对某人生气 2.be annoyed at/about 因为.而
4、生气e.g.He gotvery annoyed with me at my carelessness.因为我的粗心，他非常生气。impression1.first impressions 第一印象2.leave/make a(n).impression(on sb.)（给某人）留下.的印象e.g.His words made a strong impression onus.他的话给我们留下了深刻的印象。impress v.给留下深刻的印象，使钦佩；使铭记impressive adj.给人深刻印象的what if1.What if.?要是.会怎样呢？倘若.又如何？What if?相当于“Wh
5、at would happen if.?”，表示假设、邀请或建议，e.g.What if it rains tomorrow?要是明天下雨怎么办？What would happen if it rains tomorrow?要是明天下雨怎么办？concentrate1.concentrate on 集中精力于，全神贯注于e.g.Be quietlet me concentrate onmy homework.安静，让我专心做家庭作业。curious1.be curious about 对.感到好奇e.g.Babies are curious abouteverything around them.婴儿对周围的一切感到好奇。