Learn Dutch: Zij wil lopen omdat haar band lek is. - She wants to walk because her tire is flat.

This is because of the word omdat (because). Omdat is a subordinating conjunction, which means it introduces a dependent clause. In Dutch, dependent clauses always push the conjugated verb (in this case, is) all the way to the end of the clause.

Why is the Dutch word for a flat tire lek? Doesn't that mean 'leak'?

Yes! In Dutch, you don't usually say a tire is 'flat'. Instead, you describe it as having a leak. So, haar band is lek literally translates to 'her tire is leaky', which is the standard way to say 'her tire is flat' in Dutch.

Why is there no word for 'to' between wil and lopen?

In English, we say 'wants to walk'. But in Dutch, willen (to want) is a modal verb. When you combine a modal verb with an action verb, the action verb stays in its full dictionary form (the infinitive) and you do not use te (to). Therefore, it is simply wil lopen.

Does lopen always mean 'to walk'? I thought it meant 'to run'.

Lopen usually means 'to walk' in everyday Dutch. If you want to be specific about running, you would use rennen or hardlopen. While lopen can sometimes mean running in certain sports contexts, here she just wants to walk because she can't ride her bike!