Present Perfect Tense

Present perfect tense is expresses the idea something happened (or never happened) before now at an unspecified time in the  past. The exact time it happened is not important.

1.        Wording present perfect tense for verbal sentence

(+) S + have/has + V3 + O

(-) S + have/has + not + V3 + O

(?) Have/has + S + V3 + O ?

10 example verbal sentences: 
1.      Ghita has written a letter for her boyfriend. 
2.      I have met my lecturers today. 
3.      Rita has studied English since three years ago. 
4.      They have brought the victim. 
5.      Vina has advertised her new product. 
6.      She has agigated my friends. 
7.      I haven’t ignored him. 
8.      I have not cleaned my room already. 
9.      Has Risma advised you? 
10.  Fikri has worn her jacket.

2.        Wording present perfect tense for nominal sentence

(+) S + have/has + been + nonverb

(-) S + have/has + been + nonverb

(?) Have/has + S + been + nonverb?

10 example nominal sentences:

1.      Galuh has been good at Spanish already.

2.      My mother has been a teacher since 1992.

3.      Riri has been sick for 5 days.

4.      I have been busy in the laboratory since this morning.

5.      Yuni has been a assistant in laboratoty for a long time.

6.      Tri has not been a doctor in the hospital yet.

7.      I have been in the workshop since yesterday.

8.      Where have you been for the last 2 hours?

9.      I have been there since 07.00 o’clock.

10.  I have been busy for one semester.