PERFECT TENSES
PRESENT PERFECT
We make present perfect verbs with have/has + past participle (worked, seen, known): I have worked in a bank for ten years. She has broken a cup.
Verbs ending in –y:
Doubling:
USE
1) When we think about the past and present together: I've made a cake. Would you like some?
HOW TO MAKE QUESTIONS:
Have/has + subject + past participle
Have you paid? Where have the children gone?
HOW TO MAKE NEGATIVES:
Subject+ have/has + past participle:
Beth hasn't written to her mother yet.
We haven't told him the bad news.