复习资料（3.4）
4、Morphological rules 形态学规则
Morphological rules are the rules that govern which affix can be added to what types of stem to form a new word.
形态学规则主要指英语中通过派生方式构成新词的构词规则，即将词缀加到词干上去构成新词的规则。学习者必须掌握这些规则，但又要注意不能过分概括这些规则，以免生造出不存在的单词。
5、Types of compound words 复合词的类型
Noun + noun 名词＋名词 如：handbook, sunshine
Adjective +noun 形容词＋名词 如：highway, sweetheart
Adjective +noun +ed 形容词＋名词＋ed 如：white-haired, green=eyed
Verb +noun 动词＋名词 如：pickpocket, driveway
Adverb +noun 副词＋名词 如：downtown, upgrade
Noun +verb 名词＋动词 如：toothpick, snowfall
Verb +adverb 动词＋副词 如：follow-up, kick-off
Noun +adjective 名词＋形容词 如：world-famous, life-long
-ing form +noun -ing形式＋名词 如：dining-room, reading-glasses
Other forms 其它形式 如：go-between, father-in-law, upbringing, have-nots, thank-you note