1
a piece of wood
wood 作‘木头’讲时不可数，用 a piece of 表示‘一块木头’。
He picked up a piece of wood.
他捡起一块木头。
木材；木料；木头
woods — plural of wood
先理解核心含义，再看它在真实句子里的用法。
木材；木料；木头
the hard fibrous substance of tree trunks and branches, used as a material
He picked up a piece of wood.
他捡起一块木头。
构成树干和树枝主要部分的物质,用作建筑材料等或燃料
The substance making up the central part of the trunk and branches of a tree. Used as a material for construction, to manufacture various items, etc. or as fuel.
树皮下的坚硬纤维木质物质
the hard fibrous lignified substance under the bark of trees
特定树种的木材
The wood from a particular species of tree.
大面积密林中的树木和其他植物
the trees and other plants in a large densely wooded area
The dining table is made of solid wood, so it should last for many years.
这张餐桌是用实木做的，所以应该能用很多年。
We bought some dry wood to light the fireplace this winter.
我们买了一些干木柴，准备今年冬天点燃壁炉。
The carpenter sanded the wood until it felt completely smooth.
木匠打磨那块木头，直到它摸起来完全光滑。
wood 作‘木头’讲时不可数，用 a piece of 表示‘一块木头’。
He picked up a piece of wood.
他捡起一块木头。
The table is made of wood.
桌子是木头做的。
woods 常以复数形式表示‘树林’，注意和 wood（木头）区别。
They went for a walk in the woods.
他们去树林里散步。
Not this
I bought a wood for my project.
Use this
I bought some wood for my project.
wood作为材料时是不可数名词，不能直接用不定冠词a，应使用some wood或a piece of wood。
Not this
The table is made by wood.
Use this
The table is made of wood.
表示材料时，介词用of，而非by。'made of wood'是固定搭配。
Focus on the distinctions below. Other candidates are kept compact until a reliable usage note is available.
一块木头
He picked up a piece of wood from the ground.
他从地上捡起一块木头。
木火
They sat around the wood fire, telling stories.
他们围坐在木火旁讲故事。
木地板
The room has a beautiful wood floor.
这个房间有一个漂亮的木地板。
木雕
She is skilled in wood carving.
她擅长木雕。
木板
The wall is covered with wood panels.
墙上覆盖着木板。
脱离困境
The patient is still very sick, but she is out of the woods now.
病人仍然病得很重，但她现在已经脱离危险了。
碰木头（祈求好运）
I've never been in a serious car accident, knock on wood.
我从未遭遇过严重的车祸，老天保佑。
见树不见林
He focused so much on small details that he couldn't see the wood for the trees.
他过于关注细节，以至于看不到全局。
这不是很好吗，挪威的木头？
She used a piece of wood to prop open the door.
她用一块木头撑开门。
敲木头（求好运）
I think I'll pass the test, knock on wood.
我想我能通过考试，敲敲木头。
发短 /ʊ/ 音 (如 good, book)
Use woods naturally, then get feedback on meaning, tone, grammar, and phrasing.
Revisit a common error or keep this word in your review list.
wood=木头，'oo'像两根圆木。
wood 作“木材”义时属中性语域，通常用于建筑、家具、燃料等场景。
Words ending in -ood: good, hood, stood rhyme with wood /wʊd/. Note: food /fuːd/, mood /muːd/, blood /blʌd/ have different vowels despite similar spelling.
Dictionary facts from DICTIONARY_API_DEV, ECDICT, WIKTIONARY.