How to say that kind of behavior is characteristic of the boy. in Japanese
1)
あるある(aru) (adj-pn) a certain .../some ...種種(tane) (n,n-suf) cause/seed/origin/variety/kind/counter for varietiesのの(no) (prt) indicates possessive/nominalizes verbs and adjectives/substitutes for "ga" in subordinate phrases/indicates a confident conclusion/ indicates emotional emphasis/indicates question行動行動(koudou) (n,vs,adj-no) action/conduct/behaviour/behavior/mobilization/mobilisationは(int) indicating a subject/yes/indeed/well/ha!/what?/huh?/sighそ(n,adj-na) sparse/not closeのの(no) (prt) indicates possessive/nominalizes verbs and adjectives/substitutes for "ga" in subordinate phrases/indicates a confident conclusion/ indicates emotional emphasis/indicates question少年少年(shounen) (n) boy/juvenile/young boy/youth/ladにに(ni) (prt) indicates such things as location of person or thing, location of short-term action, etc.特徴的特徴的(tokuchouteki) (adj-na) characteristicだだ(da) (aux) be/is/indicates past or completed action/indicates light imperative。。(。) Japanese period "."
