1
on Sunday
表示在星期几，用介词 on。
I will visit you on Sunday.
我星期日去看你。
星期日；星期天；礼拜天
先理解核心含义，再看它在真实句子里的用法。
星期日；星期天；礼拜天
the day of the week after Saturday and before Monday; observed by Christians as a day of rest and worship
I will visit you on Sunday.
我星期日去看你。
在许多宗教传统中是一周的第一天,在使用ISO 8601标准的系统中是一周的第七天；基督教的安息日；在星期六之后,星期一之前。
The first day of the week in many religious traditions, and the seventh day of the week in systems using the ISO 8601 standard; the Christian Sabbath; it follows Saturday and precedes Monday.
一周的第一天；大多数基督徒作为休息和礼拜日
first day of the week; observed as a day of rest and worship by most Christians
美国传教士(1862-1935)
United States evangelist (1862-1935)
We usually go hiking on Sunday mornings.
我们通常周日上午去远足。
The library is closed on Sunday, so I will study at home.
图书馆星期天关门，所以我将在家里学习。
She has to work every Sunday this month.
这个月她每个星期日都得工作。
表示在星期几，用介词 on。
I will visit you on Sunday.
我星期日去看你。
Sunday 可直接修饰 morning 等词，前仍加 on。
We go to church on Sunday morning.
我们星期日上午去教堂。
与 last/this/next 连用时不加介词 on。
She came back last Sunday.
她上个星期日回来了。
复数形式表示每个星期日或泛指星期天。
The store is closed on Sundays.
这家商店每逢星期日关门。
Not this
I will go to the park in Sunday.
Use this
I will go to the park on Sunday.
表达具体某一天时，介词应用 on 而非 in。
Not this
Let's meet on the Sunday.
Use this
Let's meet on Sunday.
泛指星期几时，Sunday 前不加冠词 the，除非特指某个特定的星期日。
Focus on the distinctions below. Other candidates are kept compact until a reliable usage note is available.
在星期日
We have a family dinner on Sunday.
我们星期天有家庭聚餐。
星期天早上
I like to sleep in on Sunday morning.
我喜欢星期天早上睡懒觉。
主日学校
The children go to Sunday school every week.
孩子们每周去主日学校。
周日早午餐
They invite friends for Sunday brunch.
他们邀请朋友来吃周日早午餐。
周日烤肉
The pub serves a traditional Sunday roast.
这家酒吧供应传统的周日烤肉。
星期日报纸
He reads the Sunday paper with his coffee.
他一边喝咖啡一边看星期日报纸。
最好的衣服（尤指去教堂穿的）
She wore her Sunday best to the wedding.
她穿着最好的衣服去参加婚礼。
开慢车的人（尤指不经常开车的新手）
Watch out for that Sunday driver; he's going too slow.
小心那个开慢车的人；他开得太慢了。
主日学校（教会举办的宗教教育课程）
The children go to Sunday school every week.
孩子们每周去上主日学校。
星期天，血腥的星期天
The song 'Sunday Bloody Sunday' is about the troubles in Northern Ireland.
歌曲《星期天，血腥的星期天》是关于北爱尔兰问题的。
星期天早上，雨在下
I love listening to 'Sunday Morning' by Maroon 5 on lazy Sundays.
我喜欢在悠闲的星期天听魔力红的《星期天早上》。
发长 /eɪ/ 音 (如 day, play)
Use Sunday naturally, then get feedback on meaning, tone, grammar, and phrasing.
Revisit a common error or keep this word in your review list.
联想“太阳（sun）的日子（day）”，星期日总是阳光灿烂，让人想起休息和快乐。
通常指一周的第一天，在基督教文化中为休息和礼拜日。多用于日常对话、时间表达和日历语境。
These words share the same ending '-day' pronounced /deɪ/ (or sometimes /di/), but their stressed vowels differ, so they are not perfect rhymes. Also note that 'Sunday' itself can be pronounced /ˈsʌndeɪ/ or /ˈsʌndi/.
Dictionary facts from ECDICT, WIKTIONARY.