The speaker is discussing prepositions of time in Portuguese and their equivalent translations in English. They begin by explaining that in Portuguese, there are multiple prepositions of time, and they will focus on the prepositions "in," "on," and "at."
The speaker first addresses the use of "in" with daytime periods, such as "morning," "afternoon," and "evening." They note that the preposition "in" is used with these periods, but not with "night," which is considered a nighttime period.
Next, the speaker discusses the use of "on" with days of the week, such as "Monday," "Tuesday," and so on. They point out that the same preposition "on" is used regardless of whether the day is singular or plural, masculine or feminine.
The speaker then moves on to the use of "at" with specific times, such as "10 o'clock," "noon," and "midnight." They note that the preposition "at" is used with these times, but not with durations, such as "two hours."
The speaker also touches on the use of "pm" and "am" in English, explaining that they are used to avoid confusion between morning and evening times. However, they note that this is not a requirement and that the use of "pm" and "am" is not as common in English as it is in Portuguese.
Overall, the speaker is highlighting the differences in the use of prepositions of time between Portuguese and English, and providing examples of how to translate these prepositions accurately.
Here are the key facts from the text:
1. There are many prepositions of time in Portuguese.
2. English does not have as many prepositions of time as Portuguese.
3. The preposition "in" is used for daytime periods in English.
4. The preposition "at" is used for specific times in English.
5. The word "afternoon" is not used as a period of the day in Portuguese.
6. The afternoon period in Portuguese is very short, lasting only two hours.
7. In Brazil, the afternoon period is not used because it is too short.
8. The word "night" is not a daytime period in English.
9. The preposition "on" is used for days of the week in English.
10. The preposition "on" is also used for weekdays and weekends in English.
11. The word "hour" is used for duration in English, not for specific times.
12. The word "ora" is not used in English, instead, the word "hour" is used.
13. The word "hour" can only be used for exact hours in English.
14. English does not have a word for 13, 14, or 15 hours.
15. The abbreviations "am" and "pm" are used to avoid confusion between morning and afternoon.
16. "am" stands for "ante meridiem," which means before noon.
17. "pm" stands for "post meridiem," which means after noon.
18. The word "noon" means 12:00 pm in English.
19. The word "midnight" refers to 12:00 am in English.
20. The preposition "at" is used for specific times, including noon and midnight.