Category: Class

Prepositions of time:in/on/at

Level: Beginner-Intermediate

The prepositions at, in and on are often used in English to talk about times.

Here are some examples of their usage:

At

Specific Time:
Example:
at 7 o’clock
at midnight
at noon

Holiday Period:
Example:
at Christmas
at Easter

Meal Time:
at lunchtime
at dinnertime

Expressions:
at present
at the moment
at night

In

Months:
in April
in May

Seasons:
in summer
in winter

Years:
in 1990
in 2020

Decade:
in the 50s
in the 70s

Centuries:
in the 18th century

Long Periods:
in the present
in the past
in the ice age

Parts of the day:
in the morning
in the afternoon
in the evening

On

Days:
on Tuesday
on my birthday
on Halloween

Dates:
on 15th of August
on May 4th
on our wedding

Parts of a day:
on Monday morning
on Saturday evening

Test 280

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Adverbial Phrases Of Frequency, Time And Place

Level: Beginner-Intermediate

An adverb or adverbial phrase is one or more words that change the verb in a sentence. There are 3 main types of adverbial phrases: time, place, and frequency (how often something happens).

Adverbs that change the meaning of a sentence and tells us how often or how frequently something happens are called adverbs of frequency.
Example:
hourly.
annually.
usually
often
seldom
daily

Adverbs that change the meaning of a sentence and tells us when something happens are called adverbs of time.
Example:
today
tomorrow
over the summer
this week / this month / this year
next week / next month / next year
last week / last month / last year
the day before yesterday

Adverbs that change the meaning of a sentence and tells us where something happens are called adverbs of place.
Example:
here
down
there
up
back
up front
around the corner
near the (place)
away from
under the bed
in the box
out in the street

Test 255

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Why Do Competitors Open Their Stores Next to One Another?

B2 – Upper Intermediate

Do you ever wonder why you see competing shops in one crowded spot? Is it a matter of keep-your-enemies-closer strategy or an efficient spatial competition? Find out below.

Discussion Questions:

  1. Please explain Hotelling’s Law.
  2. If you were to put up your own business, what would it be? How would you apply Hotelling’s Law to find a location for your business?
  3. Give some examples of product differentiation.
  4. What are some booming businesses in Spain nowadays?

Test 628

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Hair Dyes and Straighteners Linked to Higher Cancer Risk

B2 – Upper Intermediate

Whether fine, thick, long, short, curly, or straight, your hair deserves respect. It is our crowning glory, so it deserves much care and attention. Just be careful with the products that we use as some of them are linked to a higher risk of breast cancer. Caveat emptor.

https://www.ecowatch.com/hair-dye-chemicals-cancer-risk-2641588380.html?rebelltitem=3#rebelltitem3

Discussion Questions:

  1. How do you think this study can impact society?
  2. How do you take care of your hair?
  3. Should hair dyes and straighteners be banned from the market?
  4. How in demand are hair grooming products in your country?

Personal Pronouns

Level: Beginner-Intermediate

A personal pronoun is a short word we use as a simple substitute for the proper name of a person.

There are two cases of personal pronouns: subject pronouns and object pronouns.

SUBJECT PRONOUNS
I
-I went to school.
you
-You are my friend.
she
-She is my sister.
he
-He studied hard.
it
-It is a boy!
we
-We went home early.
they
-They are not here yet.

OBJECT PRONOUNS
me
-Give me your phone.
you
-Mom will talk to you.
her
-Take her to the hospital.
him
-Please drive him home.
it
-I had to buy it.
us
-Please give us food.
them
-Throw them away!

Modals – Deductions about the Past

Level: Intermediate-Advanced

Modal verbs for deduction are used when trying to see whether something is true or not. The way we choose these modal verbs is an indication of how big we think the possibility is. Some modals of deductions about the past are must have, might have/may have, and can’t have/couldn’t have.

Compare:

She must be really exhausted from working all day. (present deduction)
She must have been very exhaused when she had to work all day. (past deduction)

must have


Must have + past participle is used to express certainty about something.

She couldn’t find her purse. She must have left it at the restaurant.
Allan must have had the flu. He didn’t show up at any of his appointments today.
We’ve got enough money. Michelle must have saved on her meal earlier.

might have / may have


Might have or may have + past participle is used to express the possibility that something happened.

I might have bought the wrong brand. Can you please ask Mom to check?
Joe thinks his wife may have left with her lover.

Note: Might have is the less formal form compared to may have. Could have is another possible form to be used in such context but it is not that very common.

can’t have / couldn’t have

Can’t have and couldn’t have + past participle are used to express that it is not possible for something to happen.

They can’t have left the party yet because their car is still outside.
Andrea thought she saw her old university professor this morning but it couldn’t have been her – she moved abroad years ago.

Test 250

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