Questions & Answers about O caddede çok dikkatli olun.
Why is the ending -un on the verb olun instead of -in?
This is the plural or formal imperative (command) form. The suffix is usually -in, but it follows 4-way vowel harmony. Because the verb root ol- (to be) has the vowel 'o', the suffix changes to -un to match it.
Can I just say ol here instead of olun?
You would use ol if you were giving a command informally to just one person. Because this sentence uses the -un ending, the speaker is either addressing multiple people at once or speaking formally and politely to one person.
What does the -li at the end of dikkatli do?
The suffix -li means 'with' or 'having.' It turns a noun into an adjective. Here, it attaches to the noun dikkat (attention or care) to make the adjective dikkatli, which means 'careful' (literally, 'with attention').
Why does cadde have -de added to it?
The -de suffix is the locative case ending, which translates to 'in,' 'on,' or 'at.' Since cadde means 'avenue' or 'street,' adding -de gives us caddede, meaning 'on the avenue.'