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blackberries are + [adjective]
blackberry 作名词指黑莓果实，常用复数形式 blackberries 作主语。
These blackberries are sweet.
这些黑莓很甜。
黑莓
先理解核心含义，再看它在真实句子里的用法。
黑莓
a sweet black or very dark purple edible berry that grows on a bramble bush
These blackberries are sweet.
这些黑莓很甜。
指果实
A fruit-bearing shrub of the aggregate species Rubus fruticosus and some hybrids.
黑莓设备；一种无线手持设备,介于手机和移动电子邮件设备之间,具备上网功能的PDA,由BlackBerry Limited销售。
A wireless handheld device, a cross between a cellphone and a mobile email appliance and Internet-capable PDA, marketed by BlackBerry Limited.
The soft fruit borne by this shrub, formed of a black (when ripe) cluster of drupelets.
I picked a ripe blackberry from the bush and ate it immediately.
我从灌木上摘了一颗成熟的黑莓，立刻吃了。
These blackberries are too sour to eat without sugar.
这些黑莓太酸了，不加糖没法吃。
The blackberry bush in our garden has grown taller than the fence.
我们花园里的黑莓灌木长得比篱笆还高了。
blackberry 作名词指黑莓果实，常用复数形式 blackberries 作主语。
These blackberries are sweet.
这些黑莓很甜。
blackberry 作名词也可指黑莓灌木，并常作定语修饰其他名词，如 blackberry bush（黑莓灌木）、blackberry pie（黑莓派）。
a blackberry bush
一棵黑莓灌木。
blackberry 作动词意为“采摘黑莓”，常与 go 搭配构成 go + -ing 结构，表示去从事该活动。
We went blackberrying in the woods.
我们去树林里采黑莓了。
Not this
I like blackberry very much.
Use this
I like blackberries very much.
英语中表示水果种类的泛指（如“喜欢某类水果”）时，要用复数可数名词，不能用单数。中文“黑莓”不分单复数，所以学习者容易误用单数。改为 blackberries 才符合英语习惯。
Not this
We picked many blackberrys in the woods.
Use this
We picked many blackberries in the woods.
以辅音字母加 y 结尾的名词变复数时，要把 y 改为 i 再加 -es，即 blackberry → blackberries。写成 blackberrys 不符合拼写规则。
Focus on the distinctions below. Other candidates are kept compact until a reliable usage note is available.
黑莓灌木
We found a blackberry bush at the edge of the field.
我们在田地边上发现了一丛黑莓灌木。
黑莓酱
She spread some blackberry jam on her toast.
她在吐司上抹了一些黑莓酱。
采摘黑莓
In late summer, we go to pick blackberries along the lane.
夏末我们去小路旁采摘黑莓。
野生黑莓
Wild blackberries are smaller but sweeter than cultivated ones.
野生黑莓比种植的黑莓更小但更甜。
黑莓派
Grandma baked a blackberry pie for the family reunion.
奶奶为家庭聚会烤了一个黑莓派。
去采摘黑莓
On sunny afternoons, the children would go blackberrying.
晴朗的下午，孩子们会去采摘黑莓。
黑莓开花时的倒春寒
It was a blackberry winter, so we covered the blackberry bushes to protect the blossoms.
这是倒春寒，我们给黑莓灌木盖上保护罩以防花朵受损。
如果理由像黑莓一样多，我想我不会被迫给任何人一个理由。
In Shakespeare's Henry IV, Part 1, Falstaff wittily says that reasons are as plentiful as blackberries.
在莎士比亚《亨利四世》第一部中，福斯塔夫风趣地说，理由像黑莓一样多。
整整一周，黑莓都会成熟。
In Seamus Heaney's poem 'Blackberry-Picking', the speaker remembers how blackberries ripened in late August.
在谢默斯·希尼的诗《采黑莓》中，说话者回忆起八月底黑莓成熟的情景。
Use blackberry naturally, then get feedback on meaning, tone, grammar, and phrasing.
Revisit a common error or keep this word in your review list.
把 black（黑）和 berry（莓）合在一起：黑莓就是黑色的浆果。首尾都是 b，联想黑莓手机的拼写也是它。
语域：neutral 常见场景：在超市、在厨房、在花园 作名词指黑莓或黑莓灌木时，通常为中性词，适用于日常食品、园艺等场景，口语和书面语中都自然。
动词常用于 -ing 形式 blackberrying，表示采摘黑莓的活动。
Dictionary facts from ECDICT, WIKTIONARY.