Definition :
A complete action which has on effect or result in the present
Pattern :
+ S+ Have/Has + VIII + O
S + Have/Has + Not + VIII + O
? Have/Has + S + VIII + O
Has à Subject : He, She, It
Have à Subject : I, We, You, They
Time Signal :
For …(for three month, for two years, for an hour etc)
Since …( since January, since yesterday, since 1991 etc)
Just …for a very recent action (a few second / minutes ago)
Already in positive sentences
Yet in negative and interrogative sentences
Examples :
+ I have already eaten
- He has not brought my book yet
? Have you read this book?