be all in all to

• conj. 对 ... 是最重要的

be all in all to的用法和样例：

例句

用作连词 (conj.)

1. What a child should do, above all, is to do well in his studies.
   小孩子该做的最重要的事是学好功课。
2. Of all the school subjects during the preliminary stage of learning, languages and mathematics are the most important.
   初学阶段的科目之最重要的莫过于语文与数学。