The document discusses prepositions of time such as "in", "at", and "on" and how they are used to indicate months, years, dates, and precise times. It also covers the connectors "and" and "but", where "and" is used to join two positive sentences and "but" is used to join a positive and negative sentence. Examples are provided to illustrate the proper uses of these prepositions and connectors.

1. 1.Prepositions of time
2.Connectors and/but

2. • In: is used for months, years,
centuries and long periods
• At: is used for a precise time
• On: is used for
• days and dates

3. • At:
I have a meeting at 9am
• In:
In England, it often snows in December
• On:
•Do you work on Mondays?

4. • And: is used to join two positive sentences
Example:
I like to eat fruits and do exercise every day.
• But: is used to join a positive and a negative
sentence
Example:
I don’t like to eat pizza but i like to eat
hamburger.

5. 1. 3 o´clock at/in/on
2. 6 March at/in/on
3. 1990 at/in/on
4. The next century at/in/on
5. Noon at/in/on
6. 25 Dec. 2013 at/in/on
7. May at/in/on
8. Thuesdays at/in/on
9. My birthday at/in/on
10. The moment at/in/on

6. at
on
in
in
at
on
in
on
on
at

7. • http://www.englishexercises.org/makeagame/viewgame.a
sp?id=5278