cheat和cheat on

cheat简单说就是骗，但是伴侣搞小三的那种骗一定要加on:

If someone cheats on their husband, wife, or partner, they have a sexual relationship with another person.

He's cheating on his wife.

他对妻子不忠。

I'd found Philippe was cheating on me and I was angry and hurt.

发觉菲利普对我不忠后，我又气愤又伤心。

She has been cheating on her husband for years.

多年来她对丈夫一直不忠实。

Don't go to that shop- they often cheat their customers.

别去那家商店，他们常常欺骗顾客。

He cheats at cards.

他玩牌时作弊。

You're not allowed to look at the answers- that's cheating?.

你们不许看答案，那是作弊。

cheat的其他短语：

feel cheated ：上当受骗

Many people feel cheated by the government's refusal to hold a referendum.

由于政府拒绝举行公民投票表决，许多人都觉得上当受骗。

cheat death （通常用于新闻报道）：to survive in a situation where you could have died死里逃生，幸免于难

He cheated death when he was rescued from the roof of his blazing cottage.

他被人从他那熊熊燃烧的棚屋顶上救了下来，捡了条命。