PREPOSITIONS TIME

1. IN

1.1. parts of a day

1.1.1. in the morning

1.1.2. in the afternoon

1.1.3. in the evening

1.2. longer periods: months/years/seasons

1.2.1. in 1968

1.2.2. in the winter

1.2.3. in the 18th century

1.3. a period of time=a time in the future or how long it takes to do something

1.3.1. in a few minutes

1.3.2. in a week

1.3.3. in four weeks

2. ON

2.1. dates

2.1.1. on 12th March

2.1.2. on 3rd July

2.2. days

2.2.1. on Monday

2.2.2. on Christmas Day

2.3. parts of a specific day

2.3.1. on Saturday night

2.3.2. on Friday mornings

2.3.3. on Monday evenings

3. AT

3.1. expressions

3.1.1. at the weekend

3.1.2. at night

3.1.3. at Christmas, at Easter

3.1.4. at the moment, at present

3.1.5. at the age of...

3.2. time

3.2.1. at 5 o'clock

3.2.2. at 11:45

3.2.3. at midnight, at lunchtime