Present perfect:
The use:It used with finished activities or an action happened at unspecified time before now. The exact time isn't important.
The form:
(I/plural) + Have + P.P (past participle).
✓ I have just met Ahmed.
( Singular) + Has + P.P.
✓ Alice has already studied chapter one.
Negative form:
(I / plural) + Haven't + P.P.
✓ I haven't eaten yet.
( Singular) + Hasn't + P.P.
✓ It hasn't rained lately.
Question form:
Have + (I/ Plural) + P.P?
✓ Have you ever seen a ghost?
Has + (Singular) + P.P?
✓ Has he found a new job yet?
Time adverbials:
√ Already. √ Yet. √ Ever. √ Never.
√ How long. √ So far. √ Just.
√ Since. √ at last. √ Recently.
√ Lately. √ Still. √ For long time...
EXEMPLES:
• She has gone.
• I have lost my keys.
• Alice has already made the tea.
• I have broken tow cups since the morning.
