"At" is another tricky preposition. The paper is on my desk. lavanya, Hello. I took a course in Arrays. My favorite movie will be on TV tonight. To the police. What about these: In general, “Use onto as one word if you can add up before on” is a sound rule and works most of the time. 2. I went to London last June. 'At', on the other hand, is used to express that something happens at the location. I still think it’s “on”. “Financial derivatives are becoming more widely used IN the stock market these days.” Yes, this use of “in” is also correct. The "right" preposition with certain verbs and categories of nouns - especially certain nouns that don't refer to physical objects - is effectively arbitrary and needs to just be learned. Until now I’m still confuse, but at least I know now that it is idiomatic and there is a general guidelines exist on using them.. By the way does anyone knows how to use has, had, and have? The dictionary focuses on the more usual … In general, we use: AT for a point (AT the corner); IN for an enclosed space (IN the car); ON for a surface (ON the floor). (the “ed” is necessary I’m still confused.) Are you an English teacher by any chance? Get a subscription and start receiving our writing tips and exercises daily! Do not use in with exact addresses (addresses that have house numbers or building numbers): wrong: *He lives on 4732 Marshall Drive. The paper is on my desk. As prepositions of place, in indicates that something is within the boundaries of an area or is contained wit… (not in last June) He's coming back next Tuesday. Here is how I explain them to my students (college freshmen and sophmores). What is your background? wrong: *The zoo is on the city park. Sound familiar? Very good and clear explanation. Fear not. Whether it is used with place or time, normally, IN is general as compared to the specific implications of ON. 4. I hope you guys can contribute facts and ideas towards my inquiries. That’s the exact same definition as “in.” An example of “into” would be, “He walked into the ballroom.”, Even though their definition is the same, we’ve come to use the two words differently. Here’s the fine point. I’m not sure what “temp” is asking. Finally, take the quiz to check your understanding. Wondering about the correct grammar usage of at? Here is a reminder. I too get laughed at at the incorrect usage of “in” and “on”. When did the rule about ending the sentence with a preposition change? The wanted persons would turn themselves in to the police. “The motivation for this lies IN the need.”. — I have done what you asked me to do. Look at how tiny these prepositions are: in and on. English: Use of in, on, at. I am in the Empire State Building. Radha was born on … “On” is also used to indicate more specific days and dates. Sally, prepositions are words that connect nouns and explain their relationship with other words. 2. I have an apple in my bag. At, on and in (place) - English Grammar Today - a reference to written and spoken English grammar and usage - Cambridge Dictionary It is used for euphoric reasons, sometimes it is used for a specific use for “on,” for example; The soldiers swore upon their lives to protect the nation. Updated October 22, 2020. I’ve never personally experienced any confusion about On and In, but a friend of mine makes me laugh with her usage, which I suspect is dialectic. I could stare at the chair. In general, on is used to indicate touching and being supported by the top surface of (something), or moving to a position that is supported by something: The book is lying on the table. Here are some examples: On an email listserv, someone asked, why do we say: “In the Army but on a soccer team "She's waiting at the entrance." 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