Learn Dutch: Er klinkt een sirene in de straat. - A siren is sounding in the street.

In Dutch, sentences usually do not start with an indefinite subject (like een sirene, meaning a siren). Instead, we use er at the beginning to introduce it. It works just like saying 'There is a siren sounding' in English.

Why does een sirene come after the verb klinkt?

Dutch follows the 'verb second' rule in main clauses. Since the dummy subject Er takes the first spot, the verb klinkt must go in the second spot. The real subject, een sirene, gets pushed to the third spot right after the verb.

I learned that klinken means 'to sound' like in dat klinkt goed (that sounds good). Is it doing the same thing here?

It is the same verb, but here it is used to say that a noise is actively being made. A very literal translation of this sentence would be 'There sounds a siren in the street.'

Why do we say in de straat instead of op de straat?

Dutch uses in de straat when talking about something located in that specific street or neighborhood. You will also see op straat (without de), but that usually means being out on the pavement or just being outdoors in general.