Freut is the third person of freuen, and there is no distinction between yin and yang.

Zu is a preposition here, which has no practical significance.

Color is the prototype of verb, and the preposition ancestor is followed by the prototype of verb regardless of yin and yang.

There are no feminine, masculine and neuter verbs in German. Only nouns have it.

Ich personal pronoun, I mean, mich personal pronoun my fourth case. Freuen verb fixed usage freuen sich, where sich is mich, if you are a personal pronoun, you are dich, and so on. Gefallen can't use it like this. Gefallen can only use objects as subjects.

Dass is used at the beginning of a clause and has no fixed meaning. Ich is a personal pronoun, not a noun. ! !