none
The word 'kein' in German is a negation and means 'none' or 'no'. It is used to negate nouns and is always used with the definite article. For example, 'kein Apfel' means 'no apple' or 'not an apple'.
I have no money
This sentence displays the usage of 'kein' in negation, specifically when dealing with the concept of ownership or possession. The German 'kein' is equivalent to the English 'no' in this context.
That is not a problem
Here we see an example of using 'kein' to negate a noun directly, without using the verb 'to have'. The German 'kein' functions similarly to English 'not a' in this context, negating the noun that follows.
He has not read a book
In this example, 'kein' is used to express the negation of an action, in this case, the action of reading a book. Like the first example, the German 'kein' is equivalent to the English 'no' or 'not a' .