有 (一）只猫在桌下；有（一）只猫在桌上；有只猫在桌(子)前面；有只猫在桌(子)后面. “一” is also optional here after thinking twice about it.

Thanks Eric CHEN and cindy. Eric, your answer seems much more authentic than mine. Thank you. 谢谢Eric CHEN和辛迪。Eric，你的回答似乎比我的更真实。谢谢。

You are doing great. I don't know the textual context you are using; Nomally we could say in this way: (把状语放在句子前面) 桌子下有只猫. / 桌子上有只猫. / 桌子前有只猫. /桌子后有只猫. If you are saying "THE cat is on the table", then translate it this way: "猫在桌子上"

correct

Yes,you are right!