合成法是指由两个或更多的词合成一个新词,具体如下:
1. 合成名词
名词+名词:notebook, alarm clock, bus stop, mother tongue, pen friend 等。
形容词+名词:fast food, first aid, highschool, open air, solar system等。
动名词+名词:dining room, sleeping bag,swimming pool, washing machine等。
名词+动名词:weightlifting, family planning,sight-seeing, window-shopping等。
其它:looker-on,passer-by, well-being, get-together, outbreak等。
2. 合成形容词
形容词+名词:full-time, long-range, one-way,first-class, long-distance, second-hand等。
名词+形容词:ice-cold, brand-new,bullet-proof, duty-free, world-famous等。
名词+过去分词:man-made, moth-eaten,breast-fed等。
名词+现在分词:English-speaking, peace-loving,record-breaking等。
形容词+现在分词:easy-going, good-looking,hardworking等。
形容词+过去分词:kind-hearted, low-paid,middle-aged, left-handed等。
其它:build-in,outdoor, face-to-face, two-year-old, well-off等。
另外,还有合成动词,如:baby-sit,overeat, uplift等;合成副词,如:someday,anywhere等;合成介词:如:into,within等。