Understanding 'Since' and 'For'

This video tutorial explains the difference between 'since' and 'for'. 'Since' is used to refer to a specific point in time, marking the beginning of an event, and is applicable in past and present tenses. Examples include 'since 9:00 AM' or 'since 2015'. 'For' is used to indicate a duration of time and can be used in past, present, or future tenses. Examples include 'for three hours' or 'for two hours'. The video also covers how to use 'for' when the exact duration is unknown, with phrases like 'for ages' or 'for a while'.

What is the main focus of this lesson?

• The difference between 'since' and 'for'

• The use of past tense verbs

• How to write essays

• The difference between 'is' and 'are'

What does 'since' refer to?

• A duration of time

• A specific point in time

• An indefinite period

• A future event

Which tenses can 'since' be used in?

• Past and future

• Present and future

• Past and present

• Future only

Complete the sentence: 'I have been studying since ____.'

• three hours

• a long time

• ages

• 9:00 AM

When did she start teaching if she has been a teacher since 2015?

• For 5 years

• Since 2010

• For a long time

• In 2015

What does 'for' refer to?

• A specific point in time

• A future event

• An indefinite period

• A duration of time

Which tenses can 'for' be used in?

• Future only

• Present and future

• Past and future

• Past, present, and future

Complete the sentence: 'I have been studying for ____.'

• 9:00 AM

• 2015

• since 10:00 AM

• three hours

Which phrase can be used if you are unsure of the exact period of time?

• Since 9:00 AM

• For ages

• Since 2015

• For three hours

Complete the sentence: 'He has lived in London for ____.'

• a long time

• since April 4

• 2015

• April 4