A large collection of at usages, there is always one beyond your imagination

In English, we often encounter such words. Their meanings are simple and clear, but their usage is complex and varied. It often seems easy to understand, but the reality is far from that. Today, let’s talk about the most common at. , as a preposition, at basically means "in". However, it has the following uses: 1. At (somewhere): We will get together at the corner of the street. We will meet at the corner of the street. , 2. At (a place of study or work): He is at Yale. He is at Yale University. , 3. At (a certain time): I get up at 6 o’clock every day. I get up at 6 o’clock every day. , 4. At the age of: She graduated from Yale at 20. She graduated from Yale at the age of 20. , 5. Towards: Please look at the picture. Please look at this picture. , The murderer pointed a gun at the little boy. The murderer pointed a gun at the little boy. , 6. At…far: I can hold it at arm’s length. I can hold it with my arms straight. , 7. In the state of...: It is too early and I think she is at breakfast. It is too early and I think she is at breakfast. , 8. To, to (speed, ratio, etc.): He is driving at 80 mph. He is driving at 80 miles per hour. , 9. In terms of... (used with adjectives): I am good at English. I am good at English. , 10. Because (used with adjectives): , Those members were impatient at the delay. Those members were impatient at the delay. , They were delighted at the news. They were delighted at the news. , 11. Respond to…: , All of them came to the party at Lily’s invitation. All of them came to the party at Lily’s invitation. , 12. Before the phone number: You can reach me at 15511746091. , 13. at that and: He built a house and a nice one at that. He built a house and a nice one at that. , be at it again doing something (bad): , The room is messy. The boys are at it again. The room is messy, these boys are making trouble again. , where it’s at Grand event (occasion): , Lily’s birthday party seemed to be where it’s at. Lily’s birthday party seemed to be a grand occasion. , at one’s best/worst In someone’s heyday (worst) state: , He won the first prize at his best. In his heyday, he won the first prize. , it can be seen from the above that although the word at is small and has a simple meaning, its usage is changeable. After reading it, have you mastered it?