1、Unit 4 词组总结1.be familiar with .对.熟悉2. be familiar to sb为某人所熟悉3.lose track of 不了解.的情况，不了解.的动态4.Keep trackof 与.保持联系; 记录例句: He lost track of his good friend after graduation5.deliver sb. a lecture.作报告6.thanksto归功.多亏.7.in advance 提前8. change significantly变化显著9.tend to照顾,10tend to do sth.倾向于.11.enable sb
2、.to do sth.使某人有能力做某事12.throw the baby out with the bathwater 不 分 良 莠 一 起 抛 弃13pourin蜂 拥 而 至15.pourdown( 雨 )倾 盆 而 下14.be anxious about . 担 心 / 担 忧 17.with anxiety 忧 虑 地15.postpone (=put off ) doingsth, 推迟做某事16，Make ones fortune 发财17correspind wit.通信联系18.turn up 1)(意外或终于)出现 2)调低(音量)19.be ashamed of 对.
3、难为情20.work out 理解:锻炼;训练;进展顺利;算出;拟出(计划、安排) .21.face to face 面对面22.stay in touch with .保持联系23.are up to 从事24.make friends online 网上交朋友25make it clear to sb. that 对某人清楚表明26be set in 以为背景27.figureout 计算出;理解28.hear from sb,收到某人来信29.strike the match 划火柴30.a plain clothes 便服31.step out of 迈步 走出32.felt lost 感到茫然33.in the distance 在远处
