Question

英语完形填空！求解！

Single men worked the hardest around the house, more than 【that】 of all other age groups of married men. 这里为什么用that呢？

Answer 1

that为特指, 相当于the ＋名词。
The water in the cup is hotter than that in the pot. （该句中that可以换成 the water）
如果该名词后面带有of短语表示所属关系，就只能用that。
My seat was next to that of the mayer. (句中that代替seat。)

Answer 2

that，应该是个代词 that在这里代指Single men

Answer 3

that在这里代指Single men
应该吧
错了，大家别怪我

Answer 4

that指other age groups of married men

大致意思单身汉工作最努力，超过了那些（that）所有年龄段的已婚男人

Answer 5

that，应该是个代词，代指后面的那些男的中一个。注意：不是定语从句。

Answer 6

代指Single men