Breakdown of Wir haben diese Größe nicht.
haben
to have
wir
we
nicht
not
dieser
this / that (fem.: diese, neut.: dieses)
Questions & Answers about Wir haben diese Größe nicht.
Why do we use diese here instead of dieser or dieses?
The word Größe (size) is a feminine noun (die Größe). In this sentence, it is the direct object (the thing that we have), so it takes the accusative case. For feminine nouns in the accusative case, the word for 'this' is diese.
Why does nicht go at the very end of the sentence?
When you want to negate the entire action of the verb (we do not have it), the word nicht usually gets pushed to the end of the sentence. It comes after the direct object (diese Größe).
What is the letter ß in the word Größe?
That letter is called the Eszett or 'sharp S.' It makes a hissing 'ss' sound. If you do not have a German keyboard, it is perfectly fine to write it as a double S, like Grösse.
Does the verb haben (to have) always trigger the accusative case?
Yes! The thing that you have is always the direct object of the sentence, which means it must be in the accusative case. Here, that direct object is diese Größe.