"It is a chair."
Translation:Es ist ein Stuhl.
Einen is used for accusative case. This sentence is nominative, thus you would use ein. If this isn't a good enough explanation, let me know.
No -- ein Stuhl is correct.
The indefinite article ein (before a noun) does not have an ending for masculine or neuter nominative singular.
Hm, interesting, I've made a table where it says that einer-der is a match in nominative (and einen-den for accusative), but I am not sure in which sense I should use it . Thanks for response ^^
einer is the form used when it's a pronoun, i.e. when it's standing by itself.
For example, Hans ist ein Mann und Paul ist auch einer "Hans is a man and Paul is one, too."
Note ein before Mann (indefinite article) but einer at the end (pronoun).
No. This sentence has no object.
It is the subject and a chair is the predicate.
Should "It" be "er" in this sentence? Or would this only apply to later references to the chair? (i.e. Es ist ein Stuhl. Er ist schwarz)
The sequence "it is" has the two hints es ist and ist es because the order can change depending on whether or not there is something before the verb.
For example, "It is cold" is Es ist kalt but "It is cold today" is Heute ist es kalt -- if there is heute before the verb ist, there is no room for the es and so that has to come after the verb.
But in this sentence, "It is" can only be es ist.
Remember that hints are global and not sentence specific -- some of the hints may not apply to the current sentence.
Generally, the topmost hint will be a correct option for the given sentence as the system tries to sort the hints it displays that way, but it can get confused so even the topmost one is not 100% reliable.
That is incorrect -- you used the accusative case einen Stuhl (and forgot to capitalise the noun Stuhl), but "to be" takes a predicate in the nominative case, not accusative.
Because that means "That is a chair", not "It is a chair" (= Es ist ein Stuhl).
You would usually use a personal pronoun such as "it" when referring back to something that you have been talking to already, but a demonstrative pronoun such as "this" to refer to something new to the conversation.
"This is my favourite piece of furniture. It is a chair."
Dies ist mein Lieblingsmöbelstück. Es ist ein Stuhl.