I should study tonight. I must do well on my test next week. |
Should / Must + Base Verb
- I must study tonight.
- Brenda and Phil should get married.
- I should change my car's oil.
Positive Sentences
I You He She It We They |
should must |
study tonight. make an appointment. change my tires soon. |
Negative Sentences
I You He She It We They |
should not / shouldn't must not / mustn't |
study tonight. make an appointment. change my tires soon. |
Yes / No Questions:
Should* |
I you he she it we they |
change my tires soon? |
Questions and short answers with must are not common.
Short Answers
Yes, I should.* |
No, I should not / shouldn't.* |
Questions and short answers with must are not common.
Wh Questions:
Where | should* | I you he she it we they |
go? |
Questions and short answers with must are not common.
Use
Should means something is a good idea or advice:
You should take some medicine.
He shouldn't play with money.
Should I change my tires?
We use must to mean something is very important:
You mustn't arrive late anymore.
I must change the oil soon.
You must study harder!
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