Using Prepositions On, At, Ago
They are used with prepositions, pronouns, and noun phrases to show directions, places, times or to introduce an object. These prepositions, which take place in all kinds of sentences that you can see in daily life, bring together different sentences and connect them to a certain idea.
Although prepositions are generally short words, it is not possible to generalize as they are quite common in the English language and there are about one hundred and fifty.
Here are most common Prepositions List.
ON
Days
Monday,
Tuesday,
Wednesday,
Friday, Saturday…
Datest
On Christmas day,
On my birthday
AT
Clock Times
At 7,
At half past nine,
At twenty,
At eight o’clock…
Mealtimes
At breakfast,
At lunchtime,
At teatime
AGO
Specific time in the past
Ten minutes ago,
two hours ago,
4 days ago,
3 month ago,
a long time ago
