We have known each other since vs We know each other since

The correct phrase is "we have known each other since." This construction uses the present perfect tense to indicate an action that started in the past and continues up to the present. On the other hand, "we know each other since" is incorrect because it lacks the necessary auxiliary verb to form the present perfect tense.

Last updated: April 08, 2024 • 1862 views

We have known each other since

This phrase is correct and commonly used in English.

This phrase is used to indicate a relationship or acquaintance that started in the past and continues up to the present. It is formed with the present perfect tense.

Examples:

We have known each other since we were in high school.
They have known each other since they were kids.
I have known her since she moved to the city.
We have known each other since we started working together.
She has known him since they met at the conference.

Show examples from the web [+]

We have known each other since childhood, but only recently kindled more than a friendship.
We have known each other since childhood.
I met the then Cardinal Joseph Ratzinger twenty-five years ago. Thus, when I went to give obedience after the Conclave, Pope Benedict XVI said to me before I could speak: «We have known each other since 1980...».
It is very well located, quiet, clean, and the family welcomed me as if we have known each other since always.
WE HAVE KNOWN EACH OTHER SINCE THE THIRD GRADE.
She told me that she has been wathcing me for a very long time, and that we have known each other since I was a child, but she did not expect me to remember such things.
My dear, dear friend, he is actually a brother to me, we have known each other since we were four years old and he is incredibly talented, he can play anything, just give him fifteen minutes and he can play even the flute!
Russell and I have known each other since we were kids.
The two have known each other since kindergarten.
Both of them have known each other since high school.
They have known each other since 1984.
Tom and Sue have known each other since 1985.
Danny and I have known each other since we were six.
This does not prevent him from eventually becoming romantically involved with Marianne Louvre, as they have known each other since childhood.
Solange and Carlos have known each other since childhood and their marriage is arranged.
He and Lillia have known each other since childhood.
The band members have known each other since high school.
The pair have known each other since they were both ten years old.
Brewery partners Stefano, Marco and Giulio have known each other since they became friends in high school.
We've known each other since primary school.

We know each other since

This phrase is incorrect in English.

Show examples from the web [+]

We know each other since ages ago.
We know each other since quantico.
We know each other since childhood.
We work together since 2001 but we know each other since before we created Pleix.
You should pronounce it like this, as Greta says it, a beautiful little blonde jewel! 🙂 She's the two years old daughter of my cousin Alex, a cousin like a brother since we know each other since I was born.

Alternatives:

We know each other since we were kids.
We know each other well.
We know each other from school.
We know each other for a long time.
We know each other since childhood.

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