他決定親自照顧那位老人用英語怎么說

He decided to look after the old man in person.

He made mind to take care of that old man in person.

既然是做決定，說明不是僅僅老人有病去看護，而是較長時間由他來照料老人，所以，用take care比較妥當。

英文原文：
He decided to take care of the old man by himself.
英式音標：
[hi?] [d??sa?d?d] [t?; before a vowel; t?; stressed; tu?] [te?k] [ke?] [?v; (?)v] [e?] [??ld] [m?n] [ba?] [h?m?self] .
美式音標：
[hi] [d??sa?d?d] [tu?t?] [tek] [k?r] [?v] [e?] [old] [m?n] [ba?] [h?m?s?lf] .