contoh kalimat present perfect tense yaitu positif negatif dan interrogratife

(+) I have walked for two hours.
(-) I haven't walked for two hours.
(?) Have I walked for two hours?

semoga bermanfaat

nominal present perfect ;
+ she has been here for two hours
- she hasn't been here for two hours.
? has she been here for two hours?

verbal present perfect
+ my brother has drunk that medicine since last year.
- my brother hasn't drunk that medicine since last year.
? has my brother drunk that medicine last year?