Afrikaans is is the present-tense form of to be, and it happens to look exactly like English is.
So:
This is one of the many places where Afrikaans may feel familiar to English speakers. However, not every Afrikaans verb works this similarly, so it is helpful to learn each pattern as it comes.
In this sentence, gevaarlik comes after is, so it is a predicative adjective. In Afrikaans, predicative adjectives usually do not take extra endings.
So:
But when an adjective comes before a noun, it often does change:
So this is a very useful contrast:
A rough guide is:
A few pronunciation notes: