En - And

En is the most elementary co-ordinating conjunction: it joins two elements, two clauses in the example below:

Ik heet Marja en ik ben 21 jaar oud.

My name is Marja and I am 21 years old.

It is possible to use en repetitively to create a chain and add stress. Note that in writng the e in en then often receives an acute accent. This has the same effect as the construction 'both ... and ...' in English:

Het is mogelijk om hier én aan fitness te doen én de sauna te gebruiken.

It is possible to do both fitness and use the sauna here.

The above can also be achieved by using the construction zowel...als ..., but this is more formal:

Het is mogelijk om hier zowel aan fitness te doen als de sauna te gebruiken.

It is possible to do both fitness and use the sauna here.