Question

I'm Brazilian, and it's really difficult to understand what i mean using present perfect!
Help me please

Answer 1

You use Present Perfect tense if an action has started in the past and has a result in the present time

Past Perfect = Subject + has/have + past participle of the verb

*past participle = usually ending -ed, -d, -t, -en, or -n
*example: dreamt, went

for example:

• I have washed the car. It is now clean and shiny.
• My sisters have been to Canada for three times. They like it very much.

to know more about verb tenses, visit http://www.slideshare.net/stephlowe91/ielts-training-verb-tenses

Answer 2

Any action started at the time of past and just now finished, It's present perfect tense.Structure :Subject +have/has+third form of verb+objects. Ex.I have finished my homework.