adverb
1
BAD : Next July I'm going back to Hong Kong. I booked the tickets already.
GOOD : Next July I'm going back to Hong Kong. I've booked the tickets already.
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Already is usually used with the present perfect tense (NOT the past tense): 'If he's already seen the film, he won't want to see it again.'
2
BAD : Most of the food is cold already when you get it.
GOOD : Most of the food is already cold when you get it.
BAD : They had already ten children and didn't want any more.
GOOD : They already had ten children and didn't want any more.
GOOD : They had ten children already and didn't want any more.
3
BAD : The war is not over already.
GOOD : The war is not over yet.
BAD : The new shop has not been opened already.
GOOD : The new shop has not been opened yet.
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Instead of using not + already, use not + yet : 'We haven't been paid yet.' 'The plane hasn't landed yet.'