六级必背1、以便:convenient/convenience2、效率:efficient/efficiently/efficiency3、节省和挥霍:save time/money/space; economical, thrift waste time/money/space; costly, lavish4:人旳心理健康:independent, cooperative, competitive, considerate, confident, creative, sociable, perseverance; selfish, isolated, conservative5、人旳身体健康:health, disease, strong, strength, energetic6、娱乐:colorful, pleasure, joy, recreation, entertainment, relax tired, boring, lonely7、环境:environment, pollute, poisonous, dirty8、安全和危险:safe, danger, risk9:经验:experience, social experience, enter the society10、人际:humane, fair, unfair, help, assist, freedom, freely基本体现(Basic Elements of English Writing):越来越:be increasingly + adj
, be on the rise, the growing number of人们认为:it is generally/widely believed/held/agreed that许多问题:a host of/a number of proble