Learn Finnish: Aurinko nousee idässä. - The sun rises in the east.

The dictionary form of this verb is nousta (to rise or get up), which is a Type 3 verb. To form a command for one person, you use the verb's stem. For nousta, the stem is nouse-. This means the command "Rise!" is simply nouse! Notice that this is the exact same stem used to build the word nousee (it rises).

Why is "in the east" spelled idässä and not "itässä"?

The dictionary word for "east" is itä. When we add the ending -ssä (meaning "in"), it closes the syllable. This triggers a spelling rule called consonant gradation, where the strong letter t softens to a weak d. Because of this rule, itä becomes idä-, resulting in idässä.

Why does the verb nousee end with a double vowel?

In Finnish, the "he/she/it" form of a verb (the third-person singular) is usually made by taking the verb stem and doubling its final vowel. The stem of this verb is nouse-, so doubling the final e gives us nousee (it rises).

Where is the word for "The" in this sentence?

Finnish does not have articles like "the", "a", or "an". The word Aurinko simply translates to "sun", but native speakers understand it perfectly as "the sun" based on the context of the sentence.