What do they often do on Sundays.为什么这个句子的Sunday要加s?可有些句子没加s?
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WhatdotheyoftendoonSundays.为什么这个句子的Sunday要加s?可有些句子没加s?WhatdotheyoftendoonSundays.为什么这个句子的Sunday要加s?可
What do they often do on Sundays.为什么这个句子的Sunday要加s?可有些句子没加s?
What do they often do on Sundays.为什么这个句子的Sunday要加s?可有些句子没加s?
What do they often do on Sundays.为什么这个句子的Sunday要加s?可有些句子没加s?
因为不是单指某一个sunday啊,它是指通常的情况下里的sunday,就不是指一个sunday啦