He was a 12-year-old boy.
He is good-natured.
复合形容词的构成:
▲形容词+名词-ed:kind-hearted好心的,white-haired白发的
▲形容词+形容词:red-hot炽热的,dark-blue深蓝的
▲形容词+现在分词:good-looking好看的,easy-going随和的
▲副词+现在分词:hard-working勤劳的,fast-moving快速转动的
▲副词+过去分词:hard-won得来不易的,newly-made新建的
▲名词+形容词:life-long终生的,world-famous世界闻名的
▲名词+现在分词:peace-loving爱好和平的,fun-loving爱开玩笑的
▲名词+过去分词:snow-covered白雪覆盖的,hand-made手工的
▲数词+名词 + ed:four-storeyed 4层楼的,three-legged 3条腿的
▲数词+名词(名词用单数):ten-year 10年的, two-man两人的
2.形容词作伴随状语和原因状语
He spent 7days in the wind and snow,cold and hungry.
他在风雪中度过了7天,又冷又饿。
She stared into the distance, speechless for a long time.
她盯着远处看,好长时间不讲话。
Afraid of being caught,the thief hid himself under a bed.
因为害怕被抓,这个小偷藏在床下面。