专攻北大高中英语词汇教学.pptVIP

un- able less like happy lucky pleasant real successful usual a．不能够的 conj．除非 prep．不象 a．不像的 a．不快乐的 a．不幸的 a．使人不愉快的 ad．不真实的 a．不成功的 a．不平常的 body thing pron．没有人 n．没有东西 pre- and pro-? cite cover cycle new peat place search view build call vision Barack Obama politician librarian, musician * 专攻北大英语 Prefix + Suffix 结构化记忆： 英语是一种词缀（affix）非常丰富的语言，词缀有前缀（prefix）和后缀（suffix）之分。 例：up- 表示“向上， 向上面， 在上”。 upward (adv. 以上，adj.向上的)，uphill （adv. adj.上坡的）,uphold (v. 支持，赞成) -less (n. →adj.) 表示“没有…的” jobless无业的, cordless无线的, homeless无家可归的, helpless无助的 , careless Objectives 1 Know the meaning of some prefixes and suffixes. 2 Enlarge our vocabulary and know some rules of word formation. 3 Know how to use the words. 梦开始的地方 Guess the meaning of the prefix “de-” de: a shows an opposite (becoming less) b. shows sth. is removed 1 Car sales have declined by a quarter.2 Mary declined Jays invitation to dinner. decline: a. decrease b. say no 3 The government wants to decrease  population growth. Fill in the blanks. defeat, delay, deliver, destroy, desperate 1 Time was running out and we were getting _________.2 Our meeting was _______ for ten minutes.3 She was a woman who hated to admit ______.4 The school was completely ________ by fire.5 The morning mail has just been _______. desperate delayed defeat destroyed delivered dis- abledabilityadvantageagreeappearappointcoverlikemissobey shows an opposite or negative Group work.(5)Repeat what your former classmates have said. Words PK. What are the two words? 1 There must be some _______ with the bill. You cant ______ her. Shes the one with the long red hair.2 Im sorry, I must have _________. mistake mistake misunderstood mis-: wrong or wrongly Make up one sentence by using the two words. Read and repeat your sentences. (3 Ss) im- in- il- ir- improper, imprecise, imperfect,immobile, impatient, impolite incomplete, inconvenient, incorrect, incredible, independent, inadequate illegal, illogical ir