Unit 20 New Frontiers

Lesson 3 Scientific Breakthroughs

Compound Words复合词

1．把两个或两个以上的词结合在一起构成新词的方法叫复合法。用复合法构成的词叫复合词。复合词种类繁多，从词性上看有复合介词，复合连词，复合副词，复合代词，复合数词等，而数量最多的是复合名词，其实是复合形容词，再次是复合动词。

2．复合名词

（1）名词+名词

Lipstick, classroom, newspaper, workshop, bookstore, bloodtest

（2）形容词+名词

Highway, dark glasses, easy chair, broadcast, blackboard, freeway, mainland, newcomer, gentleman

（3）副词+名词

Overwork, upgrade, outhouse, outcomer, overcoat, afternoon, inland

（4）动词+名词

Chopstick, pickpocket, breakwind

（5）动词-ing+名词

Readingroom, sleepig-pill, dining-car,swimming-pool

（6）名词+动词

Snowfall, waterway

（7）动词+副词

Break-down, break-through, get-together, breakup

（8）副词+动词

Output, onflow, downfall

（9）名词+介词+名词

Son-in-law, father-in-law

3．合成形容词

（1）名词+形容词