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be someone's valentine
这句话常在情人节用来邀请心上人做自己的另一半。
Will you be my valentine?
你愿意做我的情人吗？
情人；心上人
先理解核心含义，再看它在真实句子里的用法。
情人；心上人
a sweetheart or loved one, especially one chosen to receive a greeting on Valentine's Day
Will you be my valentine?
你愿意做我的情人吗？
表达爱意(尤其是浪漫情感)的东西,通常以贺卡、礼物或留言形式送给心仪的人,尤其是在2月14日。
An expression of affection, especially romantic affection, usually in the form of greeting card, gift, or message given the object of one's affection, especially on February 14th.
情人节礼物的收受者或送出者,尤其是在2月14日。
A person to whom a valentine is given or from whom it is received, especially on February 14th.
He bought a small gift for his valentine and hid it under the pillow.
他买了一件小礼物送给他的心上人，并把它藏在枕头下面。
At the party, he finally asked her to be his valentine.
在聚会上，他最终请求她做他的心上人。
After fifty years together, my grandfather still calls my grandmother his valentine.
在一起五十年后，我祖父仍然称我祖母为他的心上人。
这句话常在情人节用来邀请心上人做自己的另一半。
Will you be my valentine?
你愿意做我的情人吗？
这里的 valentine 指情人节贺卡，也可指情人节礼物。
She sent him a valentine.
她寄给他一张情人节贺卡。
Not this
Happy Valentine!
Use this
Happy Valentine's Day!
valentine 指“情人”或“情人节贺卡”，不是节日本身；表达节日祝福时要用 Valentine's Day。中文“情人节”容易让学习者误把 valentine 当作节日名称。
Not this
I received valentine from my boyfriend.
Use this
I received a valentine from my boyfriend.
valentine 表示“情人节贺卡”时是可数名词，单数形式前需要加冠词 a/an；中文没有冠词系统，因此容易漏掉。
Focus on the distinctions below. Other candidates are kept compact until a reliable usage note is available.
做我的情人
Every year she asks me to be her valentine.
每年她都请我做她的情人节恋人。
寄情人节贺卡
She sent a valentine to her secret crush.
她给暗恋对象寄了一张情人节贺卡。
情人节贺卡
He bought a beautiful valentine card for his wife.
他给妻子买了一张漂亮的情人节贺卡。
匿名送情人节贺卡的人
My secret valentine left a note in my locker.
我的匿名情人给我储物柜里留了一张纸条。
制作情人节贺卡
The children made valentines for their parents.
孩子们为父母制作了情人节贺卡。
我滑稽的情人，甜蜜的漫画情人
This line is from the 1937 Rodgers and Hart song 'My Funny Valentine', popularized by Frank Sinatra and other jazz singers. Here 'valentine' means a sweetheart.
这句歌词出自1937年罗杰斯与哈特创作的歌曲《My Funny Valentine》，后经弗兰克·辛纳屈等爵士歌手演唱而广为流传。这里的valentine意为情人。
你还会寄给我情人节贺卡吗？
This is a line from the Beatles' 1967 song 'When I'm Sixty-Four', which imagines a love that lasts into old age. 'Valentine' here means a Valentine's Day card or gift.
这句歌词出自披头士乐队1967年的歌曲《When I'm Sixty-Four》，歌曲想象一段持续到老年的爱情。这里的valentine指情人节贺卡或礼物。
Use valentine naturally, then get feedback on meaning, tone, grammar, and phrasing.
Revisit a common error or keep this word in your review list.
联想 Valentine's Day（情人节）：那天你送卡片或礼物给心上人，ta 就是你的 valentine。
语域：neutral 常见场景：情人节、贺卡与情书、恋爱对话 “valentine” 在情人节语境中常用，可指“情人/心上人”或“情人节贺卡/礼物”。整体属于中性词，口语和书面语都可用；但指“心上人”时多带浪漫色彩，比较常见于情人节贺词或文学性表达，日常对话中更常说 sweetheart、boyfriend/girlfriend 等。
这些词与 valentine 的尾部读音 /taɪn/ 押韵，且拼写都含 -ine。注意：不要仅凭 -ine 拼写类推读音，像 genuine /ˈdʒenjuɪn/、medicine /ˈmedɪsɪn/、routine /ruːˈtiːn/ 等词读音并不相同。
Dictionary facts from ECDICT, WIKTIONARY.