boast about

详细解释:自夸

例句：

John came home boasting about the fish he had caught; it took the wind out of his sails when he found his little sister had caught a bigger one.约翰回家后就夸耀自己捉到了一条大鱼，但当他看到妹妹捉到一条更大的鱼时，他感到难堪极了。