tā / bǎ / zìjǐ / xiǎngxiàng / chéng / yīwèi / yóuxiáqíshì / sìchù / xíngxiázhàngyì

他把自己想象成一位游侠骑士，四处行侠仗义。

He imagined himself as a knight-errant, chivalrously helping others everywhere.