this made me laugh
whay can't it be tu sei non un cane?
Check my other comment in this thread. It should be: "Tu non sei un cane."
btw The pronoun "tu = you" is optional because the verb (sei) is already giving us information about the subject.
What's the difference between "no" and "non" I never know which one I have to use
No is no, non is not.
I can't wait until the day that I have to use this.
who thinks that they are a dog?
me. arf arf
Why is the voi form not accepted here?
I assume because, logically speaking, multiple people couldnt be one dog. To use Voi the sentence probably would have been "you are not dogs" or "you all are not dogs"
'TU non siete un cane'?? Ins't it VOI?
No, because voi is used for a group and means "you all, y'all" or similar things whereas tu is used for one person which is what this is referring to.
At least that's what I believe is correct.
is it wrong if I use the formal form, "Lei non e un cane?"
I've made the same mistake, I think it is because it's not correctly written. Should be "Lei non è un cane". The accent is missed in the sentence.
non é un cane (with or without a Lei) should be correct when they ask you to check all correct options - otherwise it should be a choose 1 answer
What is the difference between voi siete and tu sei?
"voi siete" is plural, while "tu sei" is singular