21课 6.19
passing //（正在）经过的reason //原因 then //那时home //家，强调有感情house //仅仅指房子few //几乎没有、少数几个a few + 可数名词determine //决心knock //敲；撞down //倒go away //离开be determine to do sth. //决定做某事bike //自行车present day //今日，今天；现今up to the present day //直到今天
by him —— heby her —— sheby me —— Iby us —— weby them —— theyby you —— you
情态动词后面加动词原型