1
there is slush on [surface]
slush 指地面上的半融雪时是不可数名词，通常不加 a/an，也没有复数形式。
There is slush on the road this morning.
今天早上路上有雪泥。
雪泥；半融的雪（或冰）
先理解核心含义，再看它在真实句子里的用法。
雪泥；半融的雪（或冰）
partly melted snow or ice on the ground
There is slush on the road this morning.
今天早上路上有雪泥。
半融的雪或冰,通常在地面上。
Half-melted snow or ice, generally located on the ground.
半融雪
partially melted snow
稀泥或泥浆。
Liquid mud or mire.
加味刨冰饮品(即沙冰)。
Flavored shaved ice served as a drink (a slushie).
The sidewalks were covered with dirty slush after the snowstorm.
暴风雪后，人行道上覆盖着脏兮兮的雪泥。
Be careful not to slip on the slush near the entrance.
小心别在入口附近的雪泥上滑倒。
The children's boots got soaked in the slush as they walked to school.
孩子们上学路上靴子被雪泥浸湿了。
slush 指地面上的半融雪时是不可数名词，通常不加 a/an，也没有复数形式。
There is slush on the road this morning.
今天早上路上有雪泥。
此结构表示状态变化，slush 仍为不可数名词。
The snowman turned into slush in the sun.
雪人在阳光下变成了雪泥。
slush 指沙冰饮品时是可数名词，复数形式为 slushes。
The kids ordered two slushes at the stand.
孩子们在摊位买了两杯沙冰。
Not this
After the storm, slushes covered the sidewalk.
Use this
After the storm, slush covered the sidewalk.
slush 表示‘半融的雪/雪泥’这一物质义时通常为不可数名词，不能加复数 -es；若要表示多处雪泥，可用 patches of slush 等短语。
Not this
As the temperature rose, the snow began slushing on the road.
Use this
As the temperature rose, the snow began to turn to slush on the road.
slush 是名词，不能直接用作动词来表达‘变成雪泥’；应使用 turn to slush 或 become slushy 等动词性表达。
Not this
The weather report says slush will fall tonight.
Use this
The weather report says sleet will fall tonight.
slush 指地面上的雪泥，不是从天而降的降水；表示‘雨夹雪/冻雨’应使用 sleet，二者不可混用。