1. im- "into, in, on, upon" + post- + -er.
2. 字面含义：put upon, place upon, a laying on.
3. => sb put himself upon the position which belongs to another.
4. 也就是说某人将他自己放置在本来属于别人的位置上。
5. put something bad like deception on sb.
6. 或者说：以次充好，以假乱真，以假代真。=> 欺骗、欺诈。
7. put false on true, put false replace true.

1. They consider him to be nothing but an imposter.

他们认为他不过是个骗子而已.

来自《简明英汉词典》

2. We discovered him to be an imposter.

我们发现他是个冒名顶替的骗子.

来自《简明英汉词典》

3. The imposter sponged 1000 pounds from his acquaintance.

那个骗子从相识者那里骗取1000英镑.

来自《简明英汉词典》

4. No imposter could deceive him; someone had put him up to all their tricks.

任何骗子也骗不了他, 有人已经把他们的一切圈套告诉了他.

来自《简明英汉词典》

5. He was an imposter, who masqueraded as a doctor.

他是个冒牌医生。

来自辞典例句