Here is a concise summary of the engVid lesson on the basic prepositions "at", "on", "in", and "by":
**Summary:**
* The lesson covers the usage of "at", "on", "in", and "by" in three contexts: **Transportation**, **Location**, and **Time**.
* **Key Takeaways by Context:**
1. **Transportation:**
* "On" (large vehicles: buses, trains, planes, boats; except small boats and bicycles)
* "In" (cars, taxis; implies ownership or private use)
* "By" (means of transportation: "by car", "by plane")
2. **Location:**
* "At" (specific location: "at my house")
* "On" (surface or area: "on the table")
* "In" (enclosed space: "in a room")
* "By" (near or close to: "by the red marker")
3. **Time:**
* "At" (specific time: "at 9:15")
* "On" (days: "on Monday", "on Christmas day")
* "In" (longer periods: "in September", "in 1992")
* "By" (end of a specific time: "by tonight")
Here are the key facts extracted from the text, numbered and in short sentences:
**General Facts**
1. The lesson is about four basic prepositions in English: "at", "on", "in", and "by".
2. The lesson covers transportation, location, and time.
**Transportation Facts**
3. "On" is used for large vehicles: trains, buses, planes, and big boats.
4. "In" is used for cars and taxis, as they are typically private vehicles.
5. "On" is always used for bicycles, regardless of size.
6. Small boats can use either "in" (if for personal use) or "on" (if larger).
7. "By" indicates the mode of transportation (e.g., "by car", "by plane").
**Location Facts**
8. "At" is used for specific locations (e.g., "at my house", "at 51 Eglington").
9. "On" is used for areas or surfaces (e.g., "on the floor", "on a table").
10. "In" is used for enclosed spaces (e.g., "in a room", "in a box").
11. "By" means "close to" or "near" a location (e.g., "by the red marker").
**Time Facts**
12. "At" is used for specific times (e.g., "at 9:15", "at 12:00").
13. "On" is used for days (e.g., "on Monday", "on Christmas day").
14. "In" is used for longer periods of time (e.g., "in September", "in 1992").
15. "By" indicates the end of a specific time (e.g., "by tonight", "by Friday").