gumshoe as sth
as 后接表示职业的名词，说明以侦探身份工作。
They gumshoe as private investigators.
他们当私家侦探。
当侦探；秘密调查
轻手轻脚地走动；潜行；悄悄走；秘密行走
to work as a detective; to investigate secretly or discreetly
套靴；胶底运动靴；悄悄走；秘密行走
n someone who is a detective；n a waterproof overshoe that protects shoes from water or snow
一般现在时
He gumshoes around town asking questions.
他悄悄地在镇上四处打听消息。
一般过去时
She gumshoed through the files last night.
她昨晚悄悄翻查了文件。
present progressive
They are gumshoeing in the neighborhood.
他们正在街区里暗中调查。
gumshoe 作动词时表示‘作侦探/暗中调查’或‘悄悄走动/潜行’，按规则变化。
The child tried to gumshoe into the kitchen without waking his mother.
那个孩子试图悄悄溜进厨房，不吵醒他的妈妈。
用法提示：此处 gumshoe 是动词原形，用在 try to 之后，表示‘蹑手蹑脚地走动’。
You can gumshoe across the wooden floor if you wear socks.
如果你穿着袜子，就可以在木地板上悄悄走动。
用法提示：此处 gumshoe 是动词原形，用在情态动词 can 之后，表示‘悄悄移动’。
We watched the cat gumshoe toward the bird in the garden.
我们看着那只猫悄悄靠近花园里的鸟。
用法提示：此处 gumshoe 是动词原形，用在感官动词 watch 的宾语补足语中，表示‘悄悄靠近’。
as 后接表示职业的名词，说明以侦探身份工作。
They gumshoe as private investigators.
他们当私家侦探。
around 后接地点，表示在该范围内轻手轻脚地移动。
They gumshoe around the empty house.
他们在空房子里蹑手蹑脚地走动。
grammar · medium
易错句子He likes to do a gumshoe at night.
正确表达He likes to gumshoe at night.
gumshoe 在这里是动词，意为“当侦探；暗中调查”，应直接作谓语；加 do a 会把它误用为可数名词短语。
grammar · medium
易错句子They gumshoe in the room from the hallway.
正确表达They gumshoe into the room from the hallway.
表示从走廊进入房间的移动方向，须用介词 into；in 只表示静态位置，不能与 from the hallway 搭配表示进入。
grammar · medium
易错句子They suggested to gumshoe around the block.
正确表达They suggested gumshoeing around the block.
suggest 后不能接不定式，需接动名词作宾语；因此用 gumshoeing，不用 to gumshoe。
sleuth 作动词指“当侦探、查案”，通常不及物；gumshoe 作动词还可表示“秘密调查”和“蹑手蹑脚地走”，义域更宽。
investigate 是通用“调查”，不强调保密；gumshoe 强调秘密、谨慎地查探。
sneak 强调偷偷移动、不被发现，常接方向或地点；gumshoe 的“潜行”义不涉及调查，而 gumshoe 同时可指“秘密调查”。
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