2021届高三英语一轮复习派生词课件

Good Afternoon! Message board What is your biggest difficulty in learning English? What is your biggest difficulty in learning English? Vocabulary How to remember word more efficiently? After so many years of learning English, have you found some easy ways to double your vocabulary? Use prefixes and suffixes Or you can clone it Word Formation ——Derivation 构词法—派生词 5 Derivation (派生词) root 词根 prefix 前缀 suffix 后缀 + + unhappiness the beginning of a word the end of a word Prefix (前缀) Do you agree or disagree? It is illegal to steal It is considered impolite to ask a person how much he earns. These data are incomplete so we still need to collect more. This question is so difficult that I am unable to answer it. Read the following sentences and try to understand the words' meanings in bold. Tip: Guess the meanings of the letters in red. Task 1 Negative prefixes Prefix Meaning Example il- in- im- dis- un- 不 incorrect illegal impossible dislike uncertain 不喜欢 不正确的 不合法的 不可能的 不确定的 correct legal possible like certain mis- misunderstand 误解 understand Facing a lot of affairs, you need to make a plan to prearrange them. This bridge is broken so we need to rebuild it. Read the following sentences and try to understand the words' meanings in bold. Task 2 Tip: Guess the meanings of the letters in red. Other prefixes Prefix Meaning Example pre- re- 在...之前 再 preview review 预习 复习 view view suffix (后缀) Rule Suffix Example adj.＋suffix →n. v.＋suffix→n. Noun suffixes teach → difficult → weak → perform → improve → pollute → teacher difficulty weakness performance improvement pollution 老师 困难 虚弱 表演 改进 污染 -ness -y/-ty/-ity -er/-or -ance/-ence -ment -tion/-sion Rule Suffix Example v.＋suffix →adj. n.＋suffix →adj. Adjective suffixes comfort → differ → music → create → use → use → comfortable different musical creative useless useful 舒适的 不同的 音乐的 创造性的 无用的 有用的 danger → dangerous 危险的 -able/-ible -ant/-ent -ic/-