Leslie Linguo

ESL Grammar Course

...to help you in your conversations with Leslie Linguo
Prepositions of Time
This unit shows you the meaning and use of after, at, before, by, for, from, in, on, since, to, until when we want to say when or how much time.

TIMES, CERTAIN PARTS OF THE DAY and CELEBRATIONS

at six o'clock
at half past three
at midnight
at midday
at lunchtime
at Christmas
at Easter
at the weekend

DAYS

on Friday
on the fourth of May
on New Year's Day
on Friday afternoon

PARTS OF THE DAY, MONTHS, SEASONS, YEARS and CENTURIES

in the morning
in the late afternoon
in January
in the first month
in spring/summer/autumn/winter
in 1989
in the 1960s
in the eighteenth century

Monday comes before Tuesday. Tuesday comes after Monday.

I'll be there by six o'clock = I'll arrive at six or before.
I'll be there until six = I'll leave at six.
I won't be there until six = I'll arrive at six, not before.
I'll have finished by November = I will finish at some time before November.
I'll be there from three to six = I'll arrive at three and leave at six.
I can see you in five minutes. (starting after five minutes)
I can see you for five minutes. (a five-minute talk)
I have known him since 1985.
I have known him for twenty-two years = It is 2014. We first met twenty-two years ago (in 1992).

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Contents
The Basic Sentence
Unit 1: The Basic Sentence
Unit 2: The Subject
Unit 3: The Verb
Unit 4: Subject and Verb
Unit 5: Negative Sentences
Unit 6: Short Forms
Unit 7: Word Order
Questions
Unit 8: Question Words
Unit 9: Making Questions
Unit 10: Subject Questions
Unit 11: Short Answers
Unit 12: Question Tags
Unit 13: Indirect Questions
Verbs
Unit 14: Verb Forms
Unit 15: Using Verb Forms
Unit 16: The Verb to Be
Unit 17: Auxiliary Verbs
Unit 18: The Imperative
Unit 19: Present Simple Formation
Unit 20: Using the Present Simple
Unit 21: The Past Simple
Unit 22: The Present Continuous
Unit 23: The Past Continuous
Unit 24: Present Perfect Formation
Unit 25: Using the Present Perfect
Unit 26: The Past Perfect
Unit 27: Modal Verbs
Unit 28: The modal verb CAN
Unit 29: The modal verb COULD
Unit 30: The modal verbs MAY and MIGHT
Unit 31: The modal verbs WILL and SHALL
Unit 32: The modal verb WOULD
Unit 33: The modal verbs MUST and SHOULD
Unit 34: HAVE TO, NEED TO and NEEDN'T
Unit 35: Necessity and Advice
Unit 36: BE ABLE, OUGHT, HAVE GOT TO and HAD BETTER
Unit 37: GOING TO
Unit 38: USED TO
Unit 39: Verbs and Present Time
Unit 40: Verbs and Past Time
Unit 41: Verbs and Future Time
The Passive
Unit 42: Passive Sentences
Unit 43: Passive Verb Formations
Unit 44: Using the Passive
The Noun Phrase
Unit 45: Nouns and Noun Phrases
Unit 46: Plurals of Unit Nouns
Unit 47: Mass Nouns
Unit 48: Proper Nouns and Verbal Nouns
Unit 49: Genetive
Unit 50: Personal Pronouns
Unit 51: A, AN, SOME and ANY
Unit 52: THE
Unit 53: Nouns without A or THE
Unit 54: The Correct Article
Unit 55: THIS, THAT, THESE and THOSE
Unit 56: Mass and Unit in Sentences
Unit 57: Quantity
Unit 58: BOTH, EITHER and NEITHER
Unit 59: ONE
Unit 60: Relative Clauses
Types of Sentences
Unit 61: Empty Subjects
Unit 62: Simple Sentence Types
Unit 63: Complex Sentence Types
Adjectives and Adverbs
Unit 64: Adjectives and Adverbs
Unit 65: Position of Adjectives
Unit 66: Position of Adverbs
Unit 67: Some Important Adverbs
Comparison
Unit 68: Forms for Comparison
Unit 69: Comparing Two
Unit 70: Comparing Three or More
When?
Unit 71: Adverbs of Time
Unit 72: Prepositions of time
Unit 73: How Often?
Prepositions
Unit 74: In the World
Unit 75: In a Town
Unit 76: Outdoors
Unit 77: Indoors
Unit 78: In a Room
Unit 79: Objects and People
How and Why?
Unit 80: How?
Unit 81: Purpose and Use
Unit 82: Reason and Consequence
Connecting Ideas
Unit 83: Similar Ideas
Unit 84: Opposite Ideas
Unit 85: Sequence of Events
Unit 86: Conditions