FreeKaoYan关于考研英语单词讲解前缀13.ppt

Exam paper format Section I. Use of English ( a cloze in fact) 20*o.5=10 Section II. Reading Comprehension Part A: Four passages, Five questions with each, altogether 40 points. Part B: one passage with around five sentences having been removed. A list of sentences have been provided to choose from.(7 sentences, 10 points.) Part C: Some sentences have been underlined in a passage, translate them into appropriate Chinese. (5 sentences, 10 points.) Exam paper format Section III: Writing Part A: A short letter, note, etc. (around 100 words, 10 points.) Part B: An essay of around 160-200 words. (20 points) Derivatives What is a derivative? How is a derivative formed? A stem/root + an affix (either prefix or suffix, or both) Affixes 1 1. prefixes with negative meanings. un- non- in/im- dis- a- ab- (不/无/非/没…) unfair = un+fair 不公平(adj.) unlimited= un+limited 无限的，不定的(adj.) nonsmoker=non+smoker不抽烟的人（n.） nonsense=non+sense 废话，胡说（n.） nonviolent=non+violent 非暴力的（adj.） inexact=in+exact不精确的, 不正确的 (adj.) incapable=in+capable无能力的(adj.) impossible 不可能的（adj.） disgrace=dis+grace失宠,耻辱 (n.)使失宠;玷辱,使蒙羞 (v.) discontent=dis+content不满，不愉快（n.） asocial=a+social 缺乏社交的（adj.） atypical=a+typical 非典型的，不规则的（adj.） abnormal=ab+normal 反常的，不正常的，不规则的（adj.） absolute=ab+solute(松开)绝对的(adj.) When “in” and when “im”? “in” is the most commonly used prefix (before adj./ n.), “im” is used when a word begins with “b, m, p”. Translate the following: 不礼貌的______ 不耐烦的_________ 不动的，静止的_______ 不道德的________ 不平衡_________ Attention Do you know the following words in English? 文盲的_______ 不规则的______ 不合法的________ 不理智的_______ What do you find among them? The pair on the left side share the same negative prefix “il”, and the pair on the right share “ir”. These two prefixes derive from “in”. But they are to be used at the beginning of words beginning with “l” and “r” respectively (both consonants) When “dis”, “un”, “non”? “dis” is used at the beginni