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be a scam
be a scam 用于指某事物是骗局，语气直接。
That online deal is a scam.
那个网上交易是个骗局。
骗局；诈骗；欺诈
先理解核心含义，再看它在真实句子里的用法。
骗局；诈骗；欺诈
a dishonest or fraudulent scheme or deal; a swindle
That online deal is a scam.
那个网上交易是个骗局。
欺诈或不诚实的交易；骗局。
A fraudulent or dishonest deal. A swindle.
欺诈性商业骗局
a fraudulent business scheme
通过骗局宣传的事物。
Something that is promoted using scams.
The email about winning a lottery is a classic scam.
那封关于中奖的电子邮件是一个典型的骗局。
He lost all his savings in an investment scam.
他在一个投资骗局中失去了所有积蓄。
Be careful not to fall for any online scam.
小心不要落入任何网络骗局。
be a scam 用于指某事物是骗局，语气直接。
That online deal is a scam.
那个网上交易是个骗局。
不定式 to do 表示骗局的目的。
He devised a scam to trick investors.
他设计了一个骗局来欺骗投资者。
scam 可作定语修饰名词，构成名词短语，如 scam call、scam text。
Never reply to scam emails.
切勿回复诈骗邮件。
Not this
This email is scam.
Use this
This email is a scam.
scam 是可数名词，单数形式前需要加冠词 a；汉语没有冠词，所以容易漏掉。
Not this
He fell into the scam and lost money.
Use this
He fell for the scam and lost money.
表示“上当受骗”的固定搭配是 fall for a scam，不能按汉语“落入圈套”直接说 fall into。
Not this
He made a scam to cheat people.
Use this
He ran a scam to cheat people.
scam 与 run 搭配表示“实施骗局”，make 不是正确的动词搭配。
Focus on the distinctions below. Other candidates are kept compact until a reliable usage note is available.
网络诈骗
He lost thousands of dollars in an internet scam.
他在网络诈骗中损失了数千美元。
电子邮件诈骗
Be careful not to open attachments from email scams.
小心不要打开来自邮件骗局中的附件。
诈骗犯
The scam artist tricked elderly people into giving him money.
那个骗子诱骗老人给他钱。
上当受骗
She fell for a scam that promised free holidays.
她上了一个承诺免费度假的骗局的当。
投资骗局
The police warned about a new investment scam.
警方警告一个新型投资骗局。
诈骗电话
He gets many scam calls every day.
他每天接到很多诈骗电话。
搞骗局；行骗
Two men pulled a scam on elderly customers by charging them for unnecessary repairs.
两名男子通过收取不必要的维修费对老年顾客实施诈骗。
上当受骗；落入骗局
Never give out your bank details or you might fall for a scam.
切勿泄露你的银行信息，否则你可能会陷入骗局。
诈骗犯；骗子
The scam artist collected millions from investors before disappearing.
那个骗子在消失前从投资者那里骗走了数百万。
Use scam naturally, then get feedback on meaning, tone, grammar, and phrasing.
Revisit a common error or keep this word in your review list.
把 scam 想成‘死坑’：骗局就是让人掉进去的坑，钱财两空。
语域：informal 常见场景：日常对话、新闻报道、网络与电话诈骗 “scam” 作名词时指骗局或欺诈行为，多用于日常口语和一般媒体描述，比较常见于网络诈骗、电话推销等场景；正式文书或法律语境中更常用 fraud。
These words all rhyme with scam /skæm/: ham, jam, ram, clam, slam and swam end with the /æm/ sound. Beware the lookalikes scan /skæn/ and scum /skʌm/, which look similar but sound different.
Dictionary facts from AI_FALLBACK, ECDICT, WIKTIONARY, WORDNET.