1、Language PointsWelcome Unit1. exchangen./vt.交换；交流an exchange student一位交换生exchangeAfor B用 A 交换 Bin exchange for .作为交换.exchange sth with sb与某人交换某物2. anxiousadj.焦虑的anxietyn.焦虑；忧虑be anxious about某事或某人担心或担忧be anxious to do sth渴望做某事3. annoyvt.使恼怒annoyingadj. 使人恼怒的；annoyedadv. 恼怒的；感到恼怒的frighteningadj. 使惊恐的
2、；引起恐惧的frightenedadj. 害怕的；惊恐的interestingadj. 有趣的interestedadj. 感兴趣的excitingadj. 令人感到兴奋的；excitedadj. 兴奋的；激动的4. impressvi. 留下印象；vt. 使钦佩；给留下深刻的好印象impressiveadj.让人印象深刻的；impressionn.印象first impression第一印象impress sb deeply给某人留下深刻印象be impressed by对.印象深刻leave/ make a good impression on sb给某人留下好的印象5. what if.要是.会怎么样呢？6. curiousadj.好奇的curiosityn. 好奇curiouslyadv. 好奇地be curious about对.好奇out of curiosity出于好奇7. have confidence in对.有信心be confident in对.有信心
