表示地点的介词 The prepositions of location at, in, on and aboard are a bit more complicated than basic position prepositions. Location prepositions are associated with specific types of locations, which must be memorized. Sometimes, the location prepositions are logical. For example, in a house makes sense because you are physically standing inside the house. Other location prepositions are less logical. For example, on a bus means inside the bus rather than standing on top of the bus. Here is a list of location prepositions and the types of locations they are associated with. Scroll down for example sentences, usage notes, and location preposition exercises. Preposition Locations at specific locations, addresses, companies, stores, events, parties, desks, counters enclosed spaces, buildings, organizations, regions, water, deserts, mountain ranges, forests, cities, countries, continents, the sky, space, cars, groups of people, little boats surfaces, roads, corners, shores, single mountains, islands, planets, public transportation, bikes, big boats, stairs, balconies, walkways boats, planes, trains in on aboard To help you understand the types of locations listed above, here are some real-life examples of at, in and on to get you started. There is a discussion of aboard further down the page. At at work at home at the bank at the beach at 123 Main Street at IKEA at the party at the bus stop at the ticket counter at my desk at the dinner table at the exit at the supermarket at the wedding at the post office In in class in college in the hospital in my car in a taxi in a canoe in the sky in the universe in the army in the Rocky Mountains in the Pacific in the crowd in the theater in China in Africa On on the floor on the ground on the freeway on the lawn on the subway on the Titanic on the plane on Mount Everest on the stairs on Mars on the shore on the sidewalk on the balcony on Catalina Island on his motorcycle At School vs. In School It's important to remember that each preposition expresses an idea. For example, at expresses the idea of being at a specific location, whereas in expresses the idea of being in an institution. For this reason, at school and in school have two very difference meanings. Take a look at the examples below to understand the difference. Examples: Tom wasn't at home; he was at school. at that location • Fred doesn't have a job yet because he is still in school. enrolled in the institution of school • On a Street vs. In the Street Again, different prepositions have different meanings. On is generally used for street locations (on Main Street), whereas in is used to talk about standing in the middle of the street. Examples: My house was on Delaney Street. at that location • The car almost hit him because he was in the street. standing in the middle of the street • At the Beach vs. On the Beach As described above, you must remember the meanings of the prepositions. At the beach is referring to the location. On the beach suggests the idea of being on the shore (standing on the sand.) Examples: Sarah wasn't at school; she was at the beach. at that location • Lisa wasn't in the ocean when she saw the shark. Luckily, she was on the beach. on the sand • In Water vs. On Water Once again, the difference depends on the meaning of the prepositions. When you are in water, you are swimming in the water. However, when you are on water, you are floating 本文来源：https://www.wddqw.com/doc/0d46a4170aa1284ac850ad02de80d4d8d05a0130.html