Gezeiten

German nouns have a grammatical gender (masculine, feminine, or neuter). 'Gezeiten' is a feminine plural noun. You can identify the gender of some nouns by their endings, but many need to be learned.

Die Gezeiten (the tides) sind stark. (The tides are strong.)

Nouns in German are always capitalized.

Die Gezeiten (The tides) beeinflussen die Küste. (The tides influence the coast.)

When talking about 'the tides' in a general sense, you will use the plural form 'die Gezeiten'. There is no singular form 'Gezeit' commonly used.

Die Gezeiten (The tides) wechseln alle sechs Stunden. (The tides change every six hours.)

German uses articles (der, die, das) that agree in gender, number, and case with the noun. For 'Gezeiten' (plural), the definite article is 'die' in the nominative and accusative cases.

Wir beobachten die Gezeiten (We observe the tides). (Here, 'die' is the accusative plural article.)

Prepositions often govern specific cases. For example, 'bei den Gezeiten' (at the tides) uses the dative case, so 'die' becomes 'den' for plural nouns.

Man muss vorsichtig sein bei den Gezeiten (One must be careful at the tides). (Here, 'den' is the dative plural article.)