本句是個(gè)時(shí)間狀語(yǔ)從句.
During the course是主句的時(shí)間狀語(yǔ),"I had come to ..." 里的I 是主句的主語(yǔ),had come to realize 是主句的謂語(yǔ),that以后所有都是從句部分的內(nèi)容,作主句的賓語(yǔ)；從句又是一個(gè)時(shí)間狀語(yǔ)從句：while my world was expanding and new potions were opening for me是從句中的時(shí)間狀語(yǔ),my father是從句中的主語(yǔ),who was in his sixties是my father的后置定語(yǔ),was seeing是從句的謂語(yǔ),his world shrink and his options narrow是從句中的賓語(yǔ).
O,買糕的,終于寫完了.