唯独

In a sentence

• 在所有的学生中，唯独小明不愿意参加比赛。

  Among all the students, only Xiaoming is unwilling to participate in the competition.

  Here, '唯独' is used to highlight Xiaoming as the exception within a group of students.

• 这次旅行带了很多东西，唯独忘了地图。

  For this trip, many things were brought, but the map was forgotten.

  In this sentence, '唯独' emphasizes that the map is the specific item that was neglected among others.

• 家里什么都准备好了，唯独缺少了食材。

  Everything at home is ready, except for the food ingredients.

  This usage of '唯独' draws attention to the absence of food ingredients despite everything else being prepared.