The use of FOR

We use For when we measure the duration – when we say how long something lasts.

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For + a period of timeTo measure a period of time up to lớn the present, we use the present perfect tense và not the present tense.

I have sầu known her for a long time. (Correct) I know her for a long time. (Incorrect)I have lived here for ten years. (Correct)I live here for ten years. (Incorrect)

The present tense with For refers to a period of time that extends into lớn the future.

How long are you here for? (Until when) How long have sầu you been here for? (Since when)

In reality, we can use all verb tenses with For.


Uses of For Example sentence Verb Tense They exercise for two hours every day. Present tense They are exercising for three hours today. Present continuous He has lived in Moscow for a long time. Present perfect He has been living in Turin for three months. Present perfect continuous I worked at the service station for five years. Past tense He will be in hospital for at least a week. Future tense

However, we don"t use For with expressions such as all day or all the time.

I was there all day. (Correct)I was there for all day. (Incorrect)

The use of SINCE

Since gives the starting point of actions, events or states. It refers lớn when things began.

Since + a point in time (in the past), until now.

I"ve been waiting since 7 o"cloông xã.I have known him since January.

With since we use the present perfect tense or the past perfect tense.

I have sầu been here since 5 o"cloông xã & I am getting tired. I had been working since 5 o"cloông chồng & I was getting tired.

Since can also be used in the structure It has been + period of time + since.

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It has been two months since I last saw her.It has been three years since the last earthquake.

For vs. Since

Knowing when to lớn use FOR & when lớn use SINCE is important. Therefore it is useful khổng lồ look at a summary of the contrast between FOR & SINCE.

FOR khổng lồ mention a specific period (or duration) of time. SINCE khổng lồ mention the starting point of a period of time (continues lớn now). I have been a doctor for fifteen years. (duration = 15 years) I have been a doctor since 1992. (starting point = 1992) She has been a mother for six months. She has been pregnant since her first child was born. My sister has lived in Frankfurt for nine months. My sister has lived in Frankfurt since the beginning of March.

Both For and Since are most commonly used with the perfect tense - we don"t use these expressions in the present tense.

CorrectIncorrect I have sầu learnt Russian for three years. I learn Russian for three years. They have sầu taught geography since last year. They teach geography since last year. He has owned his dog since his cát died. He owns his dog since his cat dies.

While we can use For in the simple past tense we can"t use Since in the simple past tense. Since can only be used in the perfect tense.

CorrectIncorrect She went lớn nhật bản for three years. She went to lớn Japan since 2003. I studied in New Zealvà for one month. I studied in New Zealand since one month. He walked his dog for four hours. He walked his mèo since four hours.

It should be remembered that both ForSince have other meanings in English that are not associated with time.

This is for you.Is this the train for London? Since you asked, I"ll say yes.Since he didn"t study he didn"t pass the exam.

Summary Chart

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Next activities

Would you lượt thích to play a game to practice the difference between For and Since? Then try this Game.

See our For vs. Since English Lesson as a part of our không lấy phí course.

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Download our không lấy phí For vs Since Worksheet (in PDF).You can check the answers to lớn this worksheet here: Answers khổng lồ the For vs Since Worksheet.

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