be on to (someone or something)

1. To have knowledge, be suspicious, or be aware of someone's actions, behavior, or intention. You'd better tread carefully, I'm on to you now. The police are on to us! Everybody run!

2. To be in contact with someone at a given point in time. I'll be on to you tomorrow about the details of our meeting. I was on to John yesterday about where he wants to go for his birthday.

3. To discover, realize, or be in the process of doing something of great importance, value, or insight. Great work on this essay, Lindsay. I really think you're on to something here. Scientists now believe they may be on to a cure for cancer.

be on to

1. Be aware of or have information about, as in They can't pull that trick again; we're on to them now. [Colloquial; second half of 1800s]

2. Discover something important or profitable, as in The researchers claim they are really on to something big. [Colloquial; mid-1900s]

be on to someone

be close to discovering the truth about an illegal or undesirable activity that someone is engaging in. informal

be on to something

have an idea or information that is likely to lead to an important discovery. informal

be ˈonto somebody

1 (informal) know about what somebody has done wrong: She knew the police would be onto them.
2 (also get ˈonto somebody) be talking to somebody, usually in order to ask or tell them something: They’ve been onto me for ages to get a job. I must get onto the local council about all the rubbish in the street.

be ˈonto something

know about something or be in a situation that could lead to a good result for you: Researchers believe that they are onto something big. She’s onto a good thing with that new job.

be onto

To be in the process of finding or understanding something: I'm not sure, but I may be onto a solution to this math problem. The gang was afraid that the police were onto them.

The American Heritage® Dictionary of Phrasal Verbs.

be on to

Informal

To be aware of or have information about: You'll never deceive us again; we're on to you.

词组	be on to (someone or something)
释义	be on to (someone or something) be on to (someone or something) 1. To have knowledge, be suspicious, or be aware of someone's actions, behavior, or intention. You'd better tread carefully, I'm on to you now. The police are on to us! Everybody run! 2. To be in contact with someone at a given point in time. I'll be on to you tomorrow about the details of our meeting. I was on to John yesterday about where he wants to go for his birthday. 3. To discover, realize, or be in the process of doing something of great importance, value, or insight. Great work on this essay, Lindsay. I really think you're on to something here. Scientists now believe they may be on to a cure for cancer. See also: on Farlex Dictionary of Idioms. be on to 1. Be aware of or have information about, as in They can't pull that trick again; we're on to them now. [Colloquial; second half of 1800s] 2. Discover something important or profitable, as in The researchers claim they are really on to something big. [Colloquial; mid-1900s] See also: on The American Heritage® Dictionary of Idioms by Christine Ammer. be on to someone be close to discovering the truth about an illegal or undesirable activity that someone is engaging in. informal See also: on, someone be on to something have an idea or information that is likely to lead to an important discovery. informal See also: on, something Farlex Partner Idioms Dictionary be ˈonto somebody 1 (informal) know about what somebody has done wrong: She knew the police would be onto them. 2 (also get ˈonto somebody) be talking to somebody, usually in order to ask or tell them something: They’ve been onto me for ages to get a job. I must get onto the local council about all the rubbish in the street. See also: somebody be ˈonto something know about something or be in a situation that could lead to a good result for you: Researchers believe that they are onto something big. She’s onto a good thing with that new job. See also: something Farlex Partner Idioms Dictionary be onto v. To be in the process of finding or understanding something: I'm not sure, but I may be onto a solution to this math problem. The gang was afraid that the police were onto them. The American Heritage® Dictionary of Phrasal Verbs. be on to Informal To be aware of or have information about: You'll never deceive us again; we're on to you. See also: on American Heritage® Dictionary of the English Language, Fifth Edition. See also: be on to be on to someone be on to something be onto be onto somebody be onto something tread tread lightly step/tread on someone's toes, to cover
随便看	get the elbow get the facts straight get the feeling get the feel of get the feel of (something) get the feel of something get the first crack at (something) get the floor get the freeze get the fright of (one's) life get the fuck out get the gate get the gist get the glad hand get the go-ahead get the go-by get the goods on get the goods on (someone) get the goods on someone get the green light get the guts up (to do something) get the hang of get the hang of (something) get the hang of something get the hell out