period 3 grammar
word formation
all things in their being are good for something. 天生我才必有用。
learning goals:
1. review the words learnt in this unit.
2. learn and master the usages of word formation.
3. deal with the exercises for word formation.
step 1 leading-in
1.head+master black+board b
news+paper class+room clas
2. 辨析划线词的词性及意思。
he has a taste for sports. / the fish tastes delicious.
his hands are dirty. / he handed his pen on to me.
3.care+ -ful care+less care+
careless+ness careless + -ness care+ -less
step 2 thinking & discussing
一、合成（compounding）
由 个或 词合成一个词，有的用连字符号“一”连接，有的直接写在一起，还有的由分开的两个词构成。常见的合成词由以下几种方式合成：
1.合成名词
构成方式 例词
名词／代词+名词blood-test 验血，she-wolf 母狼
n.+动名词machine-building 机械制造，handwriting书法
adj+n.freeway 高速公路 shorthand 速记
动名词+n.freezing point 冰点，reading room 阅览室
v.+n.washroom 厕所，pickpocket 扒手
v.+n.breakthrough 突破，get-together 联欢会
副词+动词outbreak 爆发，downfall 垮台
另外，还有一些以其他方式构成的合成名词。例如：
well-being 福利 by-product副产品
good-for-nothing 无用之人
commander-in-chief 总司令
2.合成形容词
构成方式 例词
形容词+名词+-ednoble-minded高尚的，good-tempered 脾气好的
adj.+现在分词good-looking 好看的，fine-sounding 动听的
