Tools and transport (með)

The preposition með is highly versatile. When describing the tool used to perform an action, or the means of transportation used for a journey, the following noun takes the dative case.

Working with Tools

In Icelandic, you express doing something "with" a tool using með followed by the dative. Notice how the nouns below take their dative definite endings (like hamrinum for "the hammer").

The carpenter builds the house with the hammer and the nail.
Smiðurinn byggir húsið með hamrinum og naglanum.
I fix the chair with the screwdriver and the saw.
Ég laga stólinn með skrúfjárninu og söginni.
I make the hole with the drill to put the picture on the wall.
Ég geri gatið með borvélinni til að setja myndina á vegginn.

Means of Transportation

While English uses "by" for vehicles (like "by train" or "by taxi"), Icelandic uses með followed by the dative.

Do you know whether she went by taxi or by train?
Veistu hvort hún fór með leigubíl eða lest?
The tourist came here by ferry but went home by taxi.
Ferðamaðurinn kom hingað með ferju en fór heim með leigubíl.
I always find it fun to travel by train.
Mér finnst alltaf skemmtilegt að ferðast með lest.

Whether you are fixing a chair or traveling across the country, með + dative explains how you get the job done.