Unit4 构词法助记单词课件-2021-2022学年高中英语牛津译林版选修七

构词法助记单词 牛津版 高二Module 7 Unit 4 构词法 １　合成 由两个或更多的词合成一个词，有的用连词符号“－”连接，有的直接连写在一起，还有的由分开的两个词构成。如： man-made up-to-date blackboard bedroom bus stop post office ２　转化 由一种词性转化为另一种或几种词性。如： 　⑴hand（n.）→hand（v.） Let’s go hand in hand. Please hand in your exercise books after class. ⑵ clean（adj.）→hand（v.） Her room is clean and tidy. She cleans her room every day. ⑶ taste（v.）→taste（n.） It tastes good. It has not much taste. independence in depend ence prefix(前缀) root (词根) suffix(后缀) Prefix: a group of letters that is added to the beginning of a word to change its meaning. Suffix: a letter or a group of letters added to the end of a word to make a different word. ３　派生 　　由一个词根加上前缀和（或）后缀构成另一个词。如： ⑴前缀 dis- agree 同意 disagree 不同意 cover 覆盖 discover 发现 kilo- metre 米