Correct Use of 'For' and 'Since'

This video tutorial explains the difference between the prepositions 'for' and 'since' in the context of time. 'For' is used to indicate a duration or time span, while 'since' refers to a specific starting point in the past. Examples are provided to illustrate the correct usage of each preposition. An exercise is included to help learners practice and master the distinction between these two prepositions.

Which preposition is often confused by English learners when talking about time?

• On

• At

• In

• For

What does the preposition 'for' measure?

• A specific point in time

• A direction

• A location

• A time span

Which of the following is an example of using 'for' correctly?

• She has been here since 2 PM.

• I will stay for 2 weeks.

• He left since last night.

• They arrived for yesterday.

Identify the correct use of 'for' in a sentence.

• He has been here since last week.

• I have known her since a long time.

• They have been friends for childhood.

• She has been studying for 2 hours.

Choose the correct sentence using 'for'.

• I have been here since 10 minutes.

• They arrived since yesterday.

• She has been working for 5 years.

• He will stay since a week.

What is the main function of 'for' in time expressions?

• To indicate a specific start time

• To measure a duration

• To show a location

• To describe a condition

What type of time expression follows 'for'?

• A specific date

• A hypothetical event

• A location

• A duration

Which of the following is a correct use of 'for'?

• She has been working for 5 years.

• I have been here since 10 minutes.

• They arrived since yesterday.

• He will stay since a week.

Which time expression can follow 'for'?

• 2008

• 3 weeks

• Last month

• Yesterday

What does 'since' refer to?

• A time span

• A hypothetical situation

• A specific point in the past

• A future event