[Grammar] has been / have been

[gobbm]

Hello everyone,
I am in trouble again.

Which one should be used in the following statement?

It's pointless searching for new path, unless all the known routes has been tested.
OR
It's pointless searching for new path, unless all the known routes have been tested.


Thank You.

 

[SlickVic9000]

(Not a Teacher)

2nd sentence all the way.

 

[bhaisahab]

Hello everyone,
I am in trouble again.

Which one should be used in the following statement?

It's pointless searching for new path, unless all the known routes has been tested.
OR
It's pointless searching for a new path, unless all the known routes have been tested.


Thank You.

Bhai.

 

[dong6241]

Hello everyone,
I am in trouble again.

Which one should be used in the following statement?

It's pointless searching for new path, unless all the known routes has been tested.
OR
It's pointless searching for new path, unless all the known routes have been tested.

Thank You.

You need to understand difference b/t has been and have been for the sake of future usage.
You use has when there is a singualr subject = Ex: She has a car / She has been on accident.
You use have when there is plural subject = Ex: They have a car / They have been playing all night.
But in your case, you have to use have because "all the known routes" is a subject.
ALL indicates plural form of subject therefore you use have instead of has

 

[gobbm]

Thank you.

 

[emsr2d2]

You need to understand difference between has been and have been for the sake of future usage.

You use has when there is a singualr subject = Ex: She has a car / [STRIKE]She has been on accident.[/STRIKE] She has been in an accident.

You use have when there is plural subject = Ex: They have a car / They have been playing all night.

But in your case, you have to use have because "all the known routes" is a subject.
ALL indicates plural form of subject therefore you use have instead of has

I must disagree with the last part of the post which I have underlined. "Have been" is used simply because it refers to "routes" which is plural.

 

[dong6241]

I must disagree with the last part of the post which I have underlined. "Have been" is used simply because it refers to "routes" which is plural.

indeed, but I think ALL is more important than "routes" because
if you change the phrase into "one of the routes", it becomes singualr because "ONE OF" yet it still has "routes" in the phrase

 

[emsr2d2]

indeed, but I think ALL is more important than "routes" because
if you change the phrase into "one of the routes", it becomes singualr because "ONE OF" yet it still has "routes" in the phrase

True, but if you remove any mention of "all", "many of", "one of" etc, you are left with "until the routes ..." which would be followed by "have been tested".

 

[Raymott]

indeed, but I think ALL is more important than "routes" because
if you change the phrase into "one of the routes", it becomes singualr because "ONE OF" yet it still has "routes" in the phrase

"... unless each one of all the known routes has been tested" also has 'all' in it.