1、必修四unit 5词性转换名词形容词副词动词动词ing动词过去式动词过去分词center中心central中心的variety多种多样various各种各样的varied各种各样的vary使不同,使多样化varyingvariedvariedamusement娱乐amused愉快的,被逗笑的amusing好笑的,有趣的amuse逗乐,使发笑amusingamusedamusedattraction吸引,有吸引力的事物attractive有吸引力的attract吸引attractingattractedattractedtourism旅游业tourist游客tour旅行,巡回演出tour到旅行,
2、到巡回演出touringtouredtoureduniqueness独一无二unique独一无二的uniquely独特地preserve保护区preservation保护,保存,维持preserved保存的preserve保护,保存,维持preservingpreservedpreservedlength长度long长的lengthen使变长lengtheninglengthenedlengthenedsettlement定居,解决settler定居者,移民settled稳定的,固定不变的,适应的settle定居,解决settlingsettledsettledathletics竞技体育athlete运动员athletic运动的athletically具有运动员风范地translation翻译translator译员translate翻译translatingtranslatedtranslatedminority少数,少数民族minor少数的employ雇用employingemployedemployedadvance前进,进步advanced先进的,高级的advance前进,促进,提前advancingadvancedadvancedadmission允许进入,承认admitted被承认的admit承认,准许admittingadmittedadmitted