用(よう)心(じん) youjinに ni傘(かさ) kasaを o持(も)っ()て()い()っ()た() motteitta方(ほう)が()い()い() hougaii。 Just to be safe, you'd better take an umbrella. Literal Caution [for-に] umbrella [object-を] take-go [better-方がいい]. 用心に (literally 'for caution') is an adverbial 'just in case / to be safe.' 持っていく ('take along') is 持つ + いく. ~た方がいい ('you'd better / it's better to') is the standard advice-giving pattern, built on the past form. weatherwarningsadvice and suggestionscompound verb~た方がいい (had better)
用(よう)心(じん) youjinに ni傘(かさ) kasaを o持(も)っ()て()い()っ()た() motteitta方(ほう)が()い()い() hougaii。 Just to be safe, you'd better take an umbrella. Literal Caution [for-に] umbrella [object-を] take-go [better-方がいい]. 用心に (literally 'for caution') is an adverbial 'just in case / to be safe.' 持っていく ('take along') is 持つ + いく. ~た方がいい ('you'd better / it's better to') is the standard advice-giving pattern, built on the past form. weatherwarningsadvice and suggestionscompound verb~た方がいい (had better)