老(ろう)人(じん) roujinを oからかう karakauの noは waよくない yokunai。 It's not right to make fun of old people. Literal Old-people [object-を] tease [nominalizer-の] [topic-は] not-good. ~のはよくない ('doing X is not good') is a basic judgment pattern. からかう ('to tease, make fun of'). The nominalized clause serves as the topic being judged. etiquettenominalizer の
老(ろう)人(じん) roujinを oからかう karakauの noは waよくない yokunai。 It's not right to make fun of old people. Literal Old-people [object-を] tease [nominalizer-の] [topic-は] not-good. ~のはよくない ('doing X is not good') is a basic judgment pattern. からかう ('to tease, make fun of'). The nominalized clause serves as the topic being judged. etiquettenominalizer の