1
a raisin
表示具体的一颗葡萄干，用单数形式。
She picked a raisin from the cake.
她从蛋糕上拿起一颗葡萄干。
葡萄干
先理解核心含义，再看它在真实句子里的用法。
葡萄干
raisin
She picked a raisin from the cake.
她从蛋糕上拿起一颗葡萄干。
葡萄干。
A dried grape.
葡萄干
dried grape
She added a handful of raisins to the oatmeal for extra sweetness.
她在燕麦粥里加了一把葡萄干以增加甜味。
This bread is soft and full of raisins, perfect for breakfast.
这个面包很软，而且满是葡萄干，很适合当早餐。
My grandmother always keeps a box of raisins in her kitchen for baking cookies.
我奶奶总是在厨房里放一盒葡萄干，用来烤饼干。
表示具体的一颗葡萄干，用单数形式。
She picked a raisin from the cake.
她从蛋糕上拿起一颗葡萄干。
raisin 是可数名词，复数直接加 -s；作主语时谓语用复数。
Raisins are a healthy snack.
葡萄干是一种健康的零食。
名词作定语修饰另一名词时，通常用单数形式，如 raisin bread、raisin cookie。
We had raisin toast for breakfast.
我们早餐吃了葡萄干吐司。
Not this
I ate raisin for a snack.
Use this
I ate a raisin for a snack.
raisin 是可数名词单数，单独作宾语时需要冠词 a；不能像不可数名词那样不带冠词使用。
Not this
I bought some dry grapes from the supermarket.
Use this
I bought some raisins from the supermarket.
汉语“葡萄干”逐字译成 dry grapes 不地道；英语用专名 raisin 表示葡萄干，dry grapes 一般指没晒干的鲜葡萄。
Focus on the distinctions below. Other candidates are kept compact until a reliable usage note is available.
无核葡萄干
These seedless raisins are perfect for baking.
这些无核葡萄干很适合烘焙。
葡萄干面包
I spread butter on a slice of raisin bread.
我在一片葡萄干面包上抹了黄油。
葡萄干麦片
She poured herself a bowl of raisin bran.
她给自己倒了一碗葡萄干麦片。
燕麦葡萄干饼干
He bought an oatmeal raisin cookie from the café.
他从咖啡馆买了一块燕麦葡萄干饼干。
一把葡萄干
Add a handful of raisins to the salad.
往沙拉里加一把葡萄干。
浸泡葡萄干
Soak the raisins in warm water for ten minutes.
把葡萄干在温水里浸泡十分钟。
一个被搁置的梦想会怎样？它会不会像阳光下的葡萄干一样干枯？
In the poem 'Harlem', Langston Hughes asks if a deferred dream dries up like a raisin in the sun.
在诗作《哈莱姆》中，兰斯顿·休斯问道，一个被搁置的梦想是否会在阳光下干枯成葡萄干。
发长 /eɪ/ 音 (如 rain, wait)
Use raisin naturally, then get feedback on meaning, tone, grammar, and phrasing.
Revisit a common error or keep this word in your review list.
把葡萄举到阳光里（raise in）晒干，就得到 raisin 葡萄干。
语域：neutral 常见场景：food packaging、recipe、breakfast cereal 通常用于食品描述和烹饪场景，比较常见于购物标签、菜谱或早餐食品说明。作为普通名词，正式或非正式场合均可使用，无特殊语体限制。
None of these rhymes exactly with raisin /ˈreɪzɪn/. Basin /ˈbeɪsən/ and cousin /ˈkʌzən/ are lookalikes with different vowel or consonant sounds; dozen /ˈdʌzən/ shares only the written ending; resin /ˈrɛzɪn/ shares the final /zɪn/ but not the stressed vowel, so it is a near rhyme at best.
Dictionary facts from ECDICT, WIKTIONARY.