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beginning of time we can measure time with different units of time when we

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talk about short periods of time we use seconds minutes and hours we can even

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use days weeks and months when we talk about longer periods of time like when

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we talk about history we use years decades and centuries in this way one

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One day is made up of 24 hours, one hour is made up of 60 minutes and one minute is made

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up of 60 seconds.

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The same way, seven days are one week, four weeks are approximately one month, 12 months

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are a year, ten years are a decade, and a hundred years are one century.

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As we have said, one hundred years are one century.

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Look at the chart.

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can see different years and the century to which they belong so let's take a

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look year 2015 belongs to the 21st century year 1970 belongs to the 20th

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century year 1746 belongs to the 18th century year 1167 belongs to the 12th

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century year 612 belongs to the 7th century and the year 38 belongs to the

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first century. Why are some of these numbers written in blue? It's so that you take note.

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When we see a year that begins with a number, like for example year 2015 starts with 20,

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we know it belongs to the century with that number plus one to the 21st century. The same for

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Or year 1970 starts with 19, so it belongs to the century of 19 plus 1, which is 20, and so on.

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When we talk about years in our history, as we said, we talk in decades and in centuries.

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years and centuries before the birth of Jesus Christ are called BC and years and

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centuries after the birth of Jesus Christ are called 80 in this timeline we

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can see the birth of jesus right here so the green the green part of the line is a d

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now we're here in the 21st century and the part of the line that you see in yellow

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is before the birth of Jesus, so it would be BC. Talking about years in English can be a little

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bit confusing. How do we say years in English? When we say specific years, we normally separate

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the numbers like this. 6, 17, 14, 92, 20, 19. In this case, we would say 302, and in this one,

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we would say 1801, but however, sometimes we don't separate numbers like that, sometimes we just say

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90, 300, or 2000. In this case, however, we say 1400. In this one, we would say 2003.