1
be covered in goo
goo 常作不可数名词，指黏稠物质。
His hands were covered in green goo.
他的手上沾满了绿色的粘液。
黏稠物；胶状物
先理解核心含义，再看它在真实句子里的用法。
黏稠物；胶状物
a thick, sticky or semi-liquid substance
His hands were covered in green goo.
他的手上沾满了绿色的粘液。
任何浓稠的物质
any thick, viscous matter
The child's hands were covered in sticky goo after playing with the slime.
孩子玩完史莱姆后，手上粘满了黏糊糊的东西。
I accidentally stepped in some goo on the sidewalk.
我不小心踩到了人行道上的一些粘性物。
The mechanic wiped the goo off the engine parts with a rag.
机械师用抹布擦掉了引擎零件上的粘稠物。
goo 常作不可数名词，指黏稠物质。
His hands were covered in green goo.
他的手上沾满了绿色的粘液。
比喻用法，指过分矫情或多愁善感。
The movie was full of sentimental goo.
这部电影充满了过分多情的内容。
Not this
This goo is very goo.
Use this
This goo is very gooey.
goo是名词，意为粘性物；而gooey是形容词，表示粘稠的。此处描述性质需用形容词gooey。
Not this
He gooed the two pieces together.
Use this
He used goo to stick the two pieces together.
goo是名词，不能用作动词。正确表达是使用动词短语use goo to stick。