英语学习 You know,there are less distractions than in the day time.这句说的对吗,than后面要加that吗

题目

英语学习 You know,there are less distractions than in the day time.这句说的对吗,than后面要加that吗

答案

这句话是有语境的啊
你知道的,（晚上）干扰比白天少
也就是you know,there are less distractions（in the evening）than in the day time.
就是省略了晚上.要什么that啊 that指代什么呢