PREPOSTIONS OF TIME

                                   
        
We use:
At for the time of day:

at five o`clock                at 11:45                at midnight                      at lunchtime                  at sunset

We use at in these expressions;

at night                                  at the weekend(s)                     at Christmas                            at Easter        
at present                                     at the same time                                            at the moment

Examples:    I don`t like going out at night                               Will you be here at the weekend?


We use:
On for days and dates:

On Friday (s)                    On 12 March 1991             On Christmas night             On my birthday

Examples:      I will be at home on Friday morning.
                       Do you usually go out on Saturdays evenings?

We use:

In for longer periods (for example months / years / seasons):

In October                    In (the) winter                       in 1968                                 in the 1970s            

In the 18th century       In the Middle Ages               in the past                            in (the) future


We say:

In the morning(s)                                in the afternoon(s)                                    in the evening(s)

Examples:  I will see you in the morning

                  Do you work in the evenings?

We do not use at / on / in before last / next / this / every:

Example: I will see you next Friday
                They got married last March.


In a few minutes /  in six months, etc. = a time in the future
                           
Examples;     The train will be leaving in a few minutes
                      She will be here in a moment.

We also use in... to say how long it takes to do something:

I learnt to drive in four weeks ( it took me four weeks to learn).

ACTIVITIES

1. Complete the sentences. Each time use at, on, or in + one of the following:

the evening              about 20 minutes           1492                     Christmas
the moment             21 July 1969                  the 1920s             the same time
Sundays                   the Middle Ages            11 seconds          night

a) Colombus made his first voyage from Europe to America __________________
b) In Colombia most people do not work __________________________________
c) If the sky is clear, you can see the stars _________________________________
d) The first man walked on the moon _____________________________________
e) It is difficult to listen if everyone is speaking _____________________________

2. Put in, on or at in where necessary. Leave an empty space (--) if no preposition is necessary.

a) I will see you ________ Friday
b) What are you doing _________ the weekend?
c) We usually have a holiday __________ the Summer.
d) Pauline got married ________ 1991
e) Do you work ________ every Wednesday.

http://www.teach-this.com/downloads-2/530-in-on-at-dominoes/file

http://www.englishexercises.org/makeagame/viewgame.asp?id=6259

https://www.youtube.com/watch?v=GQ4uUNxO_sU

http://image.slidesharecdn.com/efprestb-150307152519-conversion-gate01/95/english-file-pre-intermediate-16-638.jpg?cb=1425742427