Since and For with the Present Perfect Tense

You will study the time expressions Since and For.

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Since and For with the Present Perfect Tense

Geography of Canada

Instructions: Read the text. Look at the words in bold.

Imagen: Köpen climate types of Canada", Adam Peterson (2016), Wikimedia commons.

I have been reading a lot about Canada since last week.

Now I know that Canada occupies much of the continent of North America, sharing land borders with the contiguous United States to the south, and the US state of Alaska to the northwest. Canada stretches from the Atlantic Ocean in the east to the Pacific Ocean in the west; to the north lies the Artic Ocean. Greenland is to the northeast. By total area (including its waters), Canada is the second-largest country in the world, after Russia. By land area alone, however, Canada ranks fourth, the difference being due to it having the world’s largest proportion of fresh water lakes.

Canada. Retrieved Jand adapted January, 2017 from https://en.wikipedia.org/wiki/Canada

Getting started: Canada’s history

Instructions: Read the following information to do the activity suggested.

Various indigenous peoples have inhabited what is now Canada for thousands years prior to European colonization. Beginning in the 16th century, British and French expeditions explored, and later settled, along the Atlantic coast. As a consequence of various armed conflicts, France ceded nearly all of its colonies in North America in 1763. In 1867, with the union of three British North American colonies through Confederation, Canada was formed as a federal dominion of four provinces. This began an accretion of provinces and territories and a process of increasing autonomy from the United Kingdom. This widening autonomy was highlighted by the Statute of Westminster of 1931 and culminated in the Canada Act of 1982, which severed the vestiges of legal dependence on the British parliament.

Canada. Retrieved and adapted, February 2019, from: https://en.wikipedia.org/wiki/Canada

Canada´s history

Instructions: Choose T (true) or F (false) for the following statements.

StamentTF
Canada has been inhabited for thousands of years.

Since 18th century european have arrived to settle in the territories now known as Canada.

The provinces and territories had been portuguese colonies for centuries.

Since 1982, Canada have severed the vestiges of legal dependence from British parliament.

Let’s find out how to use Since and For.

Instructions: Look at the time expressions for the Present Perfect and the Present Perfect Continuous:

We often use for and since when talking about time.

  • for + period: a "period" is a duration of time. For means "from the beginning of the period to the end of the period".
  • since + point: a "point" is a precise moment in time. Since means "from a point in the past until now".

Look at the following examples:

for

a period

from start to end

since

a point

from then to now

for 30 minutes

for five days

for 7 months

for 3 years

for 7 centuries

for a long time

since 8 am

since Friday

since November

since 2016

since I was at high school

since last year

 

For can be used with both the Present Perfect and the Present Perfect Continuous.

Examples:

  • I have studied for two hours.
  • They have been studying for three hours.

Since also be also used with both perfect tenses:

  • Mary has been here here since 8 o’clock.
  • We have been studying since we got here.

 

Quiz

Fresh water

Instructions: Fill in the gaps with Since or For.

the end of the last glacial period, Canada has consisted of eight distinct forest regions, including extensive boreal forest on the Canadian Shield. a long time, Canada has had over 2,000,000 lakes (563 greater than 100 km2 (39 sq mi), more than any other country, containing much of the world’s fresh water. There are also fresh-water glaciers in the Canadian Rockies and the Coast Mountains.

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Quiz

Canadian active volcanoes

Instructions: Choose the best options in the following text:

Canada has been geologically active since / for a long time, having earthquakes and potentially active volcanoes since / for it was formed, notably Mount Meager, Mount Garibaldi, Mount Cyley, and the Mount Edziza volcanic complex. The volcanic eruption of the Tseax Cone in 1775 has been among Canada’s worst natural disasters since / for a long time, killing 2,000 Nisga’a people and destroying their village in the Nass River valley of northern British Columbia. The eruption produced a 22.5-kilometre (14.0 mi) lava flow and according to Nisga’a legend, blocked the flow of the Nass River.

Canada. Retrieved January, 2017 fromhttps://en.wikipedia.org/wiki/Canada

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Evaluation

Instructions: Choose the correct option to complete the sentence.

1. Average winter and summer high temperatures across Canada have varied from region to region since / fortime inmemorial.

2. Since / for the end of last glaciation, winter temperatures can drop below -40 ºC in Canada.

3. In noncoastal regions, snow have covered the ground since / for almost six months.

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