1、项目 单词及其词性变化（语法填空必备）重点单词1impression n.印象；感想；印记impress v.印；使有印象impressive adj.给人印象深刻的2constant adj.时常发生的；连续不断的constantly adv.不断地3previous adj.在前的；早先的previously adv.在前地；早先地 4uncertain adj.不确切的；无把握的5guide vt.& n.指引；指导；导游6tablet n.药片15fasten vt.系牢；扎牢16switch n.&vt.转换；开关17exhausted adj精疲力尽的；疲惫不堪的exhaust v
2、t.使精疲力尽；用尽 & n.废气；排气装置18optimistic adj.乐观（主义）的optimism n.乐观（主义）optimist n.乐观（主义）者19pessimistic adj.悲观（主义）的20desert n.沙漠；荒原 v.遗弃21alien n.外星人；外国人 adj.陌生的；外国的；外星球的22imitate vt.模仿；仿造23moveable adj.可移动的；活动的move n.移动；迁居 v.移动；感动movement n.活动；运动24citizen n.公民；居民；市民25typist n.打字员typewriter n.打字机typewritten
3、adj.打印的type v.打字 n.类型；种类26instant n.瞬间；片刻 adj.立即的；立刻的instantly adv.立刻；立即27receiver n.接受者；接受器；电话听筒receive vt.收到28efficiency n.效率；功效efficient adj.效率高的；有能力的29dustbin n.垃圾箱30ecology n.生态；生态学ecological adj.生态的；生态学的ecologically adv.生态意义上ecologist 生态学者 38motivation n.动机motivate v.激发；刺激；给动机重点短语1take up 拿起；接
4、受；开始；继续2be back on ones feet (困境后)恢复；完全复原3lose sight of 看不见4sweep up 打扫；横扫5slide into (快捷而悄声地)移动；溜进6speed up 加速7as a result 结果是8as if/though 仿佛；好像9be similar to 与相似10(a) lack of 缺乏11in all directions/in every direction 朝四面八方经典句型（高考书面表达必备）1Worried about the journey, I was unsettled for the first few days.我担心这次旅行，所以头几天心里总是不踏实。
