Modals of deduction
Índice
Modals of deduction
10
Present
Video
Past
uses
Modals of deduction
We use modal verbs of deduction to tell how sure we are about something.
The modal verbs are: must, can't, might, may and could.
Present
We can use MUST, MAY, MIGHT, COULD and CAN'T to express how sure we are about something happening in the present or the future.
Past
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. and you use with past perfect
info
MUST
We use must when we feel sure about something because there is some kind of evidence.Exanples: Present: She must study very hard because she gets really good marks. Past: She must have been very exhaused when she had to work all day.
CAN'T
Present
We use can't when we feel sure that something is not possible. It can't be easy for him, looking after three kids on his own.
Past
when we think it's not possible that something happened.They can’t have left the party yet because their car is still outside.
Andrea thought she saw her old university professor this morning
might have / may have
Examples
PAST: We can use might have or may have + past participle when we think it's possible that something happened. PRESENT: We use might, may or could to say that we think something is possible but we're not sure.
- Listado de puntos
- Listado de puntos
might have / may have
- I think I might have left the air conditioning on. Please can you check?
- Police think the suspect may have left the country using a fake passport.
- She's not here yet. She might be stuck in traffic.
- We regret to inform you that some services may be delayed due to the bad weather.
Extra information
¡THANKS!
Modals – deductions
Laura Stefany Ruiz R
Created on September 14, 2021
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Transcript
Modals of deduction
Índice
Modals of deduction
10
Present
Video
Past
uses
Modals of deduction
We use modal verbs of deduction to tell how sure we are about something. The modal verbs are: must, can't, might, may and could.
Present
We can use MUST, MAY, MIGHT, COULD and CAN'T to express how sure we are about something happening in the present or the future.
Past
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. and you use with past perfect
info
MUST
We use must when we feel sure about something because there is some kind of evidence.Exanples: Present: She must study very hard because she gets really good marks. Past: She must have been very exhaused when she had to work all day.
CAN'T
Present
We use can't when we feel sure that something is not possible. It can't be easy for him, looking after three kids on his own.
Past
when we think it's not possible that something happened.They can’t have left the party yet because their car is still outside. Andrea thought she saw her old university professor this morning
might have / may have
Examples
PAST: We can use might have or may have + past participle when we think it's possible that something happened. PRESENT: We use might, may or could to say that we think something is possible but we're not sure.
might have / may have
Extra information
¡THANKS!