Betty: I know all about your other lady Fred! Your friend Martin told on you!
TELL ON
Meaning: if you tell on somebody, you give information about someone, usually about something bad that they have said or done, to a person in authority (like a teacher, boss or parent), knowing that this will probably result in punishment.
小编:tell on sb 这个短语的意思就是”告发,打…的小报告，告…的状”. 我们来看一个简单的例句。
Promise not to tell on me!
答应我，别告发我！
Grammar: This phrasal verb must have an object. You can not separate the verb from its particle.
He told on his sister - RIGHT
He told on her - RIGHT
He told her on - WRONG
He told his sister on - WRONG
更多例句:
When I was a child I used to steal apples from the tree in the neighbour's garden but my brother told on me and my father grounded me for a month.
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