B1 Modals of deduction: can’t, may, might, must

 Modals of deduction: may and might

These modals are used when we think that something is possible. It’s very similar to saying ‘perhaps’ A:Where are they going for their holidays?

B: I don’t know. They may/might go to Scotland because they want to see the Highlands. (meaning perhaps)

Modal of deduction: must

We use must when we are very sure about something.
A: Shall I call Linda at the office?
B: Yes, it’s already 10:00 so she must be there right now.

Modal of deduction: can’t

We use can’t when we are sure that something is not possible or not true.
A: Look! There are lights in the house. Linda must be in.
B: She can’t be in the house! We talked to her twenty minutes ago on her phone and she was still at the office.

Created by blogdeserena

Modals of deduction: might, can't and must

Choose the  best option 

Activity by Serena

They ________be very tired because they have been travelling all night. 

They ________be getting married! They only met a month ago. 

Jane is raising charity for stray animals. She ______ love animals very much.  

Thomas is always on time and today he's late. That's a bit strange. He _______be stuck in a traffic jam. 

Sheila hasn't come to work today. She_____ be ill.

I know she booked a holiday in Spain for this month, so if she's not here, she ______ be on holiday.

You _________be hungry after such a huge meal. 

She _________be Scottish with a surname like Hernández.  

They _______know each other very well. They have been talking on the phone for an hour. 

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