テストの英作の添削して欲しいです
Try these!
(1) If I saw an art installation, I would take a picture. I would want to show it to my friends and family. I might post it on Instagram too.
(2) If I saw an art installation, I would take a picture and show it to my friends and family. I might post it on Instagram too.
'An installation art' is おかしい. 'Some installation art' or 'an installation artwork' are OK:
(3) If I saw some installation art, I would take a picture and show it to my friends and family. I might post it on Instagram too.
(4) If I saw an installation artwork, I would take a picture and show it to my friends and family. I might post it on Instagram too.
Thanks!