【正文】
Unit 5 International charities Vocabulary UNICEF Oxfam ORBIS World Vision World Wide Fund for Nature International charities Prefixes (前綴 ) in un dis im ir + adj ( not +) adj inplete unhealthy dishonest impolite irregular Suffixes (后綴 ) performer carefully windy helpful useless v. + er/or→ n. adj. + ly → adv. n. + y → adj. n. + ful → adj. n. + less → adj. New suffixes treat → treat ment blind → blind ness operate → operat ion a ORBIS doctors ________many patients. The patients do not have to pay for the____