sth mosses
不及物用法，主语多为石头、墙面、屋顶等长期潮湿的表面。
The north side of the old wall mosses first.
老墙的北面最先长满苔藓。
给……覆上苔藓；被苔藓覆盖；用苔藓覆盖(某物)；使长满苔藓
不及物动词
被苔藓覆盖
To become covered with moss.
用苔藓覆盖(某物)
To cover (something) with moss.
一般现在时
The shaded path mosses over every winter.
这条阴凉的小路每年冬天都会长满苔藓。
past
The abandoned boat mossed over during the rainy season.
那艘废弃的船在雨季长满了苔藓。
现在完成时
The old wall has mossed over after years of neglect.
那堵老墙在多年无人照料后已经长满了苔藓。
moss 作动词表示“长满苔藓”或“用苔藓覆盖”，常与 over 搭配。
The old stone wall has mossed in the damp shade over the past few years.
在潮湿的阴凉处，这堵旧石墙过去几年里长满了苔藓。
用法提示：这里 moss 用作不及物动词的过去分词 mossed，表示“长满苔藓”。
To make the flowerpot look older, the gardener mossed its surface before planting the ferns.
为了让花盆看起来更旧，园丁在种蕨类植物之前用苔藓覆盖了它的表面。
用法提示：这里 moss 用作及物动词的过去式 mossed，表示“用苔藓覆盖”。
The shady side of the roof mosses faster than the sunny side.
屋顶背阴的一面比向阳的一面更快长满苔藓。
用法提示：这里 moss 用作不及物动词的第三人称单数形式 mosses，表示“长满苔藓”。
不及物用法，主语多为石头、墙面、屋顶等长期潮湿的表面。
The north side of the old wall mosses first.
老墙的北面最先长满苔藓。
及物用法，宾语是被覆盖的表面或物体。
Gardeners moss the stones to make the path look older.
园丁给石头覆上苔藓，让小路显得更古老。
被动形式，强调表面被苔藓覆盖后的状态。
The stone steps were mossed with green after the rainy season.
雨季过后，石阶上覆满了绿色苔藓。
grammar · medium
易错句子The garden steps were moss after the long rainy season.
正确表达The garden steps were mossed after the long rainy season.
系动词 were 后面作表语要用过去分词 mossed，而 moss 是名词或动词原形，不能直接放在 be 动词后表状态。汉语里“长满苔藓”可以整个短语作谓语，不必变形，所以学习者容易直接把 moss 搬过来，英语必须用分词形式 mossed。
grammar · medium
易错句子In this damp weather, the old stone wall moss very quickly.
正确表达In this damp weather, the old stone wall mosses very quickly.
主语 the old stone wall 是第三人称单数，一般现在时的动词要加 -es，即 moss→mosses；moss 是动词原形，只能和复数主语或 I/you 连用。汉语动词没有单复数变化，学习者常因此漏掉这个词尾。
长满苔藓
The stone path had mossed over after years of rain.
多年的雨水过后，这条石径上长满了苔藓。
覆满苔藓的石头
She climbed onto a mossed stone and looked across the pond.
她爬上一块覆满苔藓的石头，向池塘对岸望去。
Choose the next layer that will help you use moss with more confidence.
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