Etymology Class

*前缀改变词义，后缀改变词性。
1、care (n.)
care (v.)
careful (adj.) carefully (adv.) 后缀
carer (n.) 看护 后缀
ultracareful 十分仔细的 overcareful 过分仔细的 前缀
2、book (v.) 预定 (n.) 登记在册
booker (n.) 记账先生
bookish (adj.) 书呆子的 bookishness (n.) 书生气的样子
rebook (v.) 重新预定 overbook (v.) 多预订
3、v. +ing (adj.) 形容人 v. +ed (adj.) 形容事情
4、dis - not, do the opposite of
e.g. like-dislike color-discolor 脱色
5、in/il(l......)/ir(r......)/im(b,p,m......) =un -not
e.g. literate(识字的)-illiterate(文盲) legitimate(嫡生的)-illegitimate(私生的) relevant-irrelevant(跑题的，不相关的) balance-imbalance mature-immature(不成熟的) pratical-impratical
6、anti - against, opposite to, back
e.g. antibody(抗体) antibiotics(抗生素) antirevolutionary(反革命) Anti-Japanese Ivasion(抗日战争) antifreeze(防冻的)
7、counter - against, opposite to, back
e.g. clockwise(顺时针)-counterclockwise/ anticlockwise(逆时针) counter strike(“CS")
8、mal -/mis - badly, wrongly mal- 多用于医学用语，科技词汇 e.g. malware电脑恶意软件，病毒
e.g. spell-misspell pronounce-mispronounce
9、de - down, remove
e.g. plane-deplane(下机) rail-derail(脱轨) escalator(自动扶梯) escalat(逐级上升)-deescalat(逐级下降) head-dehead(斩首，去头) skin-deskin(去皮 peel) bone-debone(去骨的, deboned chicken) ice-deice(化霜) face-deface(毁容) fat-defat(消脂)
10、ex- out, former
e.g. wife-exwife
11、fore - before, in advance
e.g. cast-forecast warn-forewarn attack-foreattack(先发制人) head-forehead deck-foredeck
12、inter - between, among
e.g. marry-intermarry(通婚) interprovincial shuttle(省际班车) interstate network(州际公路) interface(界面)
13、mid - middle
e.g. midway *中途岛
14、post - after
e.g. post quake reconstruction(震后重建) post 1990's(90后)
15、sub - under, secondary
e.g. zero-subzero(零下，口语中零下几度，仍然用minus health-subhealth(亚健康) culture-subculture(亚文化) Sub-prime mortgage loan crisis(次贷危机)
16、uni- 独/bi - 两个/ tri -三个/multi- 多/mono- 独，单一
e.g. monodrama(独角戏) monolingual(只会一国语言的) dialogue-monologue