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ENGLISH GRAMMAR
Grammar Topics
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  Parts of speech
  Noun
  Pronoun
  Verb
  Adverb
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  Preposition
  Conjunction
  Interjection
  Tenses
  Opposites
  Active & Passive Voice
  Direct & Indirect Speech
  Vocabulary building
   
   
  ENGLISH GRAMMAR  
Alphabet
Vowels & Consonants
Word Building
Sentences
Articles
Cardinal-Ordinal Numbers
Noun
Pronoun
Verb
Adverb
Adjective
Preposition
Conjunction
Interjection
Tenses
Opposites
Active & Passive Voice
Direct & Indirect Speech
Vocabulary
PREPOSITION
Kinds of Preposition Preposition of Time Preposition of Position Preposition of Direction
PREPOSITIONS OF TIME
  Prepositions of time (at, in, by, for, since, on)
AT
  'At' is used with a definite point of time.
 
Examples
I go to library at 7:30 pm everyday,
She will come at X-mas.
I do not work at night.
She is good at badminton.
IN
  ‘In’ is used for months, years, decades, centuries, and long periods of time:
 
Examples
Amit will be back in a week.
The train will leave in a few minutes.
I learned English grammar in four weeks.
This school was built in 2002.
BY
  ‘By’ refers to latest time by which an action will be completed.
 
Examples
She will arrive by Sunday.
I will be back by 6 o’clock.
By 11 o'clock, I had read five pages.
I will have finished this project by Friday.
FOR
  'For' denotes a period of time and is used with the perfect continuous tense.
 
Examples
She has been working with Philips for the last fifteen years.
I’ve lived in this house for six years.
My friend has been living in Canada for five years.
They have been watching TV for two hours.
SINCE
 
'Since' denotes a certain point of time (past till now) and is used with the perfect continuous tense.
 
Examples
It has been raining since one o’ clock.
I have been waiting for you since seven o'clock.
I am staying in this house since my birth.
Since you left, I haven’t celebrate x-mas.
ON
  'On' is used with Days/Dates.
 
Examples
X-mas is celebrated on 25th December.
He will come on Monday.
Her birthday is on 20 November.
Do you work on Sundays?
You may also like to see
Kinds of Preposition Preposition of Time Preposition of Position Preposition of Direction