1
a landform
landform 是可数名词，指单个地形，复数形式为 landforms。
A landform is a natural feature of the earth's surface.
地形是地球表面的自然特征。
地形；地貌
先理解核心含义，再看它在真实句子里的用法。
地形；地貌
a natural feature of the surface of the earth, such as a mountain, valley, or plain
A landform is a natural feature of the earth's surface.
地形是地球表面的自然特征。
任何地质形态,如山脉或山谷。
Any geological feature, such as a mountain or valley.
The most famous landform in our country is the mountain range.
我国最著名的地形是山脉。
We studied how glaciers create new landforms as they move.
我们研究了冰川移动时如何形成新的地形。
This small island is a landform shaped by volcanic activity.
这个小岛是由火山活动形成的一处地形。
landform 是可数名词，指单个地形，复数形式为 landforms。
A landform is a natural feature of the earth's surface.
地形是地球表面的自然特征。
The map shows the main landforms of the region.
这张地图显示了该地区的主要地形。
Not this
The valley is one of the most beautiful landform in the park.
Use this
The valley is one of the most beautiful landforms in the park.
landform 是可数名词，在“one of the + 最高级 + 复数名词”结构中必须用复数形式，因此要把 landform 改为 landforms。
Not this
Landform is a natural feature of the earth's surface.
Use this
A landform is a natural feature of the earth's surface.
landform 是可数名词单数，英语中单数可数名词前通常需要限定词（如 a/an/the）。中文“地形”可以不用冠词，但英语中必须说 a landform 或 landforms，不能单独用 landform 表示泛指。
Focus on the distinctions below. Other candidates are kept compact until a reliable usage note is available.
地貌类型
The textbook explains the main landform types, including mountains and plateaus.
教科书解释了主要的地貌类型，包括山脉和高原。
冰川地貌
This national park is known for its glacial landforms.
这个国家公园以其冰川地貌而闻名。
火山地貌
Hawaii's volcanic landforms attract many geologists.
夏威夷的火山地貌吸引了许多地质学家。
海岸地貌
Coastal landforms include cliffs, beaches, and sea stacks.
海岸地貌包括悬崖、海滩和海蚀柱。
地貌形成
Rivers play a major role in landform formation over time.
河流在长期的地貌形成过程中发挥着重要作用。
Use landform naturally, then get feedback on meaning, tone, grammar, and phrasing.
Revisit a common error or keep this word in your review list.
land（陆地）+ form（形状）→ 陆地的形状，即地形地貌。
语域：formal 常见场景：geography textbooks、academic writing in geology/geography landform 是地理/地貌学中的术语，通常多用于教科书、科普读物或学术文章等较正式的书面语境，日常口语中较少出现，因此这里记为 formal（正式）。在指具体地形/地貌时，用 landform 比较专业。
真正的同韵词（押 /fɔrm/）：storm、warm、form。注意 landform 开头的 land- 读 /lænd/；landfill、landmark、landlord 拼写以 land 开头，但结尾发音不同（/fɪl/、/mɑrk/、/lɔrd/），并不与 landform 押韵。
Dictionary facts from ECDICT, WIKTIONARY.