preposition
1
BAD : In 1st July we went to Italy by car.
GOOD : On 1st July we went to Italy by car.
BAD : I made an appointment for the following Friday. In that day I got up early so as to have plenty of time.
GOOD : I made an appointment for the following Friday. On that day I got up early so as to have plenty of time.
2
BAD : I haven't seen any good films in this year.
GOOD : I haven't seen any good films this year.
BAD : There was almost a nuclear disaster in last year.
GOOD : There was almost a nuclear disaster last year.
BAD : We intend to visit the north of England in this summer.
GOOD : We intend to visit the north of England this summer.
3
BAD : We have 4 classes in a day.
GOOD : We have 4 classes a day.
BAD : They usually work 39 hours in a week.
GOOD : They usually work 39 hours a week.
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Expressions of frequency, speed, duration etc do not contain in : 'The shop is open six days a week.' 'He visits his father three times a year.' 'Bananas cost fifty pence a pound.' 'I drove to the hospital at ninety miles an hour.'
4
BAD : I noticed that nobody cried in the funeral.
GOOD : I noticed that nobody cried at the funeral.
BAD : I'm sorry that I can't be there in the wedding.
GOOD : I'm sorry that I can't be there at the wedding.
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(be) at an event (Such as a wedding, party, meeting etc NOT in ): 'I didn't expect to see his ex-wife at the party.' 'Will Dr Sirinanda be at the conference.'
5
BAD : I'm a student in the University of Jordan.
GOOD : I'm a student at the Univeristy of Jordan.
BAD : For the last year I have been studying in the British Council.
GOOD : For the last year I have been studying at the British Council.
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( be/study/be a student/teach etc) at (a) college/university etc (NOT in/of): 'His wife teaches chemistry at Bristol University.' 'I'm a Hotel Management student at Henley College.'