Question

帮忙看看有没有语法上的错误？

Whether the weight premature babies gained day by day, or the smile on their faces,both gave me a great sense of achievement.

Answer 1

回答：句子有误，错误主要集中于从句。 纠正如下：
1. It gave me a great sense of achievement to see the premature babies both gaining weight day by day and having smiles on their faces.
2. The sight of the premature babies both putting on weight day by day and having smiles on their faces gave me a great sense of achievement.
翻译：看到这些早产儿的体重一天天地增加，看到他们脸上挂着的笑容，都给予我极大的成就感。

Answer 2

对，Whether the weight premature babies gained day by day,or the smile on their faces, both gave me a great sense of achievement.
无论是早产婴儿一天比一天重，还是他们脸上的笑容，都给了我巨大的成就感。

Answer 3

Whether the weight of premature babies gained day by day or the smile on their faces .... of achievement.