Understanding "Ago," "For," and "Since"

Introduction:

In this lesson, we will explore three essential concepts in English grammar: "ago," "for," and "since." These words are crucial for indicating time and duration in sentences. By the end of this lesson, you will have a solid understanding of how to use these terms correctly in various contexts.

1. "Ago" - Indicating Past Time:

• "Ago" is used to specify a point in the past relative to the present moment.
• It is typically used with past simple tense to indicate how far back an action or event occurred.
• Example: "She left the office two hours ago." (This means she left the office two hours before the present moment.)

2. "For" - Indicating Duration:

• "For" is used to express the duration of an action or state that started in the past and continues into the present.
• It is followed by a period of time (e.g., hours, days, weeks) to indicate how long the action or state has lasted.
• Example: "They have been friends for ten years." (This means their friendship started ten years ago and continues up to the present.)

3. "Since" - Indicating Starting Point:

• "Since" is used to indicate the starting point of an action or state that continues into the present.
• It is followed by a specific point in time (e.g., a date, time) to denote when the action or state began.
• Example: "I have lived in this city since 2010." (This means I started living in the city in 2010 and still live there.)

Practice Exercises: Now, let's practice using "ago," "for," and "since" in sentences.

Try this exercise to test your grammar.

Language Level