Unit 4: Grammar 3 Prepositions in, on, at : cours 1 Bac SM

1Course Objectives

This section outlines the key learning goals for this grammar lesson. By the end of this course, students will have a clear and practical command of the prepositions in, on, and at for both time and place.

What Students Will Be Able To Do

Goal 1

Identify prepositions as connecting words that link a noun or pronoun to another element in the sentence (a verb, adjective, or another noun).

Goal 2

Distinguish clearly between prepositions of time (when something happens) and prepositions of place (where something is located).

Goal 3

Apply in, on, and at correctly in time expressions: years, months, seasons, parts of the day, specific days, dates, and clock times.

Goal 4

Apply in, on, and at correctly in place expressions: countries, cities, enclosed spaces, surfaces, streets, floors, and specific points.

Goal 5

Recognize and use common fixed expressions such as at night, at home, on time, in a hurry, and at the weekend .

Goal 6

Avoid the most frequent errors made by Moroccan learners, especially those caused by direct translation from Arabic or French.

These six goals are interconnected. Mastering Goal 1 (recognising prepositions) builds the foundation for Goals 3 and 4 (correct usage). Goal 5 (fixed expressions) adds natural fluency, while Goal 6 (error awareness) sharpens accuracy. Together, they cover everything a 1ère année baccalauréat student needs to handle prepositions of time and place with confidence in both written and spoken English.

$Learning Goal$	$Skill Type$	$Why It Matters$
$Identify prepositions as linking words$	$Conceptual$	$Builds grammatical awareness$
$Distinguish time vs. place prepositions$	$Analytical$	$Prevents category confusion$
$Use in / on / at for time$	$Productive$	$Essential for everyday communication$
$Use in / on / at for place$	$Productive$	$Needed in descriptions and directions$
$Master fixed expressions$	$Lexical$	$Makes English sound natural$
$Avoid translation errors$	$Critical$	$Reduces the most common Moroccan learner mistakes$

Overview of the six course objectives and their skill types

Key Focus: In, On, At Only

This course focuses exclusively on the three most commonly confused prepositions in English: in, on, and at . Other prepositions (under, above, between, etc.) are not part of this lesson's scope.

Both time and place uses are covered because the same three words operate in both domains — and the rules differ depending on the domain. Always check: is the context about when or where ?

Before applying the rules, students must understand the key terms used throughout this lesson. These definitions form the grammatical foundation of the entire course.

Preposition

A short word placed before a noun or pronoun to show a relationship of time, place, or direction. Common examples: in, on, at, to, for .

Object of the Preposition

The noun or pronoun that comes directly after the preposition. Example: in the phrase on the table, the word the table is the object of the preposition on .

Prepositional Phrase

The complete group formed by a preposition + its object (and any modifiers). Examples: in the morning, at the large school, on the weekend .

Preposition of Time

A preposition that answers the question'When?' . It tells us when something happens. Example: We meet at noon.

Preposition of Place

A preposition that answers the question'Where?' . It tells us where something is located. Example: She lives in Casablanca.

Fixed Expression

A set phrase in which the preposition must be memorized because it does not follow the standard rules. Examples: at night, on time, at home .

Notice that a prepositional phrase always has two essential parts: the preposition itself and its object . Modifiers (adjectives, articles) may appear between them, but they do not change the structure. Understanding this structure helps you identify and use prepositions correctly throughout the lesson.

Structure of a Prepositional Phrase

Formula

Preposition + (modifier) + Object \to Prepositional Phrase

Example 1

in + the + morning \to in the morning (preposition of time)

Example 2

at + the large + school \to at the large school (preposition of place)

Example 3

on + the + table \to on the table (preposition of place)

Fixed Expressions — Key Warning

Fixed expressions must be learned as whole units . Do not try to apply the standard IN / ON / AT rules to them.

at night

We study at night . — even though 'night' refers to a general time period, English uses at, not in .

on time

The bus arrived on time . — this means punctually; it is a fixed expression.

at home

She stayed at home . — 'home' here is treated as a point/location, making at the required preposition.

$Notion$	$Definition$	$Example$
$Preposition$	$Word placed before a noun/pronoun to show time, place, or direction.$	$in, on, at, to, for$
$Object of the Preposition$	$The noun or pronoun that directly follows the preposition.$	$on the table \to 'the table' is the object$
$Prepositional Phrase$	$Full group: preposition + object (+ any modifiers).$	$in the morning, at the large school$
$Preposition of Time$	$Answers 'When?' — indicates when something happens.$	$We meet at noon.$
$Preposition of Place$	$Answers 'Where?' — indicates where something is.$	$She lives in Casablanca.$
$Fixed Expression$	$Set phrase whose preposition must be memorized; does not follow standard rules.$	$at night, on time, at home$

Summary table: the six key notions of this lesson with definitions and examples.

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