Learn Icelandic: Mig langar að vera heima. Það rignir. - I want to be at home. It is raining.

Just like in English, Icelandic uses a dummy subject for weather. Það is the pronoun for 'it', so Það rignir translates perfectly to 'It is raining'. Because no specific person or object is doing the raining, we use Það to fill the empty subject spot.

Why does the sentence start with Mig instead of Ég?

The verb langar (wants or desires) is an impersonal verb. Instead of using a normal subject like Ég (I), it requires the person feeling the desire to be in the accusative case, which is Mig (me). Literally, it translates to 'It longs me' to do something!

Why do we use heima instead of heim here?

In Icelandic, words for locations often change depending on whether you are moving or staying still. heima means 'at home' for a stationary location. heim means 'homewards' for when you are actively traveling home. Since you want to just be there (vera), you use the stationary word heima.

What is the purpose of að in að vera?

að is the infinitive marker, acting just like the word 'to' in the English phrase 'to be'. When you connect a second action to your main verb (like wanting 'to be'), you put að in front of the dictionary form of the verb, which is vera.