when do you usually use present perfect tense

When there's a situation in the past that had no specific time in it

pada saat yang lalu dan masih berhubungan dengan sekarang dan sempurna dilakukan

contoh: My father has broken his leg.

(rumus present perfect tense)

(+) S + have/has + past participle

(-) S +have/has + not + past participle

(?) Have/has + S + past participle

(there is always hope for those who often pray and there is always a way for those who often try)