Present Perfect Tense

Formula :

subject+auxiliary verb+main verb

Example :

(+) you have eaten mine.

(-) she has not been to Rome.

(?) have you finished?

4. Present Perfect Continuous Tense

Formula :

(+) : S + have/has + been + Ving

(-) : S + have/has + not + been + Ving

(?) : Have/has + S + been + Ving

Example :

(+) She has been going to Malang since evening.

 (-) She hasn’t been going to Malang since evening.

 (?) Has she been going to Malang ?