have been designed

Question

Please I need help with a common phrase ..."have been...." I am getting comfortable using el tenso presente perfecto, pero en este caso yo no se si "han dibujado" es correcto.
El completo pronuciar es, "the tools have been designed for use under water."
Gracias, por su ayuda.

Answer 1

Hi Dunia
Thats what I was thinking, ie "tools made for". I knew it wasn't literally answering his post. Also, interesting in my example that the article can be ommited. Something else I've learnt.

Answer 2

Hi Eddy,
I think that in this particular case you need the verb, much more if you use the article.
For example in publicity language you could say: "herramientas concebidas para.."
But if you are explaining the nature of a product the verb can't be omitted.

Answer 3

Hi Dunia
OK, I wasn't looking too well at the context of the question but could you say "las herramientas concebidas para" or "las herramientas pensadas para". In this case "han sido" would not be needed.

Answer 4

The passive form is as follows:

se diseñaron = fueron diseñadas (simple past)
se han diseñado = han sido diseñadas (past perfect)

Other example:
La policía arrestó al ladrón
El ladrón fue arrestado
Se arrestó al ladrón

This "se" is called "passive". There is no difference in meaning.

Answer 5

Muchas gracias amigos.
Yo veo que Tad añade "se" antes "han sido...."
This sounds correct, but is it and is it necessary. Or is it a matter of good grammar and better grammar'

Answer 6

Yes, it is a possibility

Answer 7

I always get confused with the different uses of 'se' but could one say:

'Las herramientas se deseñaron para que se utilizen bajo el agua' as a possibility'

Answer 8

In any case it should be "han sido concebidas" or "han sido pensadas".

Answer 9

Could you also use "han concebido" or "han pensado para"

Answer 10

"Las herramientas han sido diseñadas para ser usadas bajo el agua".