This document discusses different concepts of time including point of time, period of time, and period of time to the present. It provides examples for each. Point of time refers to a specific instant in time, while period of time refers to a span of time. Period of time to the present also refers to a span of time but extends to the present. The document also discusses the simple past and present perfect verb tenses and how they are used to talk about times in the past or actions that have occurred before now. Finally, it notes that the key difference between point of time and period of time is that the former refers to a specific time while the latter refers to a span of time without specifying exact dates.

1. Carlos Hernández 6AA

2. Point of time
• Point of time is an instant of time.
Point of time
Past now

3. Examples
 In 2000 maría de la concepción born.
 In 1997,a scientist discovered a giant
scorpion fossil.
 The first world cup was in 1930.

4. Period of time
 The period of time is an amount of time.
Period of time

5. Examples
 Hurricane Carlos stormed for 31 days in
1994.
 The Mexican poet Octavio paz live from
1914 to 1998.
 The Beatles was popular in the 1960s

6. Period of time to the present
 The period of time to the present is an
amount of time but to the present.
Period of time to the present
past now

7. Example
 In the last 15 years, scientists have
discovered more than 1000fossils.
 Since then, they've studied the fossils
carefully and presented their research

8. Simple past
 Use the Simple Past to express the idea
that an action started and finished at a
specific time in the past. Sometimes, the
speaker may not actually mention the
specific time, but they do have one
specific time in mind.

9. Examples
 I saw a movie yesterday.
 I didn't see a play yesterday.
 Last year, I traveled to Japan

10. Present perfect
We use the Present Perfect to say that an
action happened at an unspecified time
before now.

11. Examples
 You have seen that movie many times.
 Have you seen that movie many times?
 You have not seen that movie many
times.

12. Difference of period of time
and point of time
The differences are that the period
of time is not a specific time while
the point of time is an specific time .

13. Examples
 Period of time : my dad born in the 1960s.
 Point of time: my mom born in 1965.

14. Questions
What are period of time?
 is an amount of time.
What are point of time?
 is an instant of time.
Which are the differences?
 That one is an specific time.

16. Ok now you are gone do your
work