Module 3a , Vocabulary & Grammar 2 ..
Grammar
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USAGE
|
MODAL VERBS
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Express personal obligation in the
present or future .
|
Must + verb1
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Express external obligation in the
present or future .
|
Have to + verb1
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Express prohibition in the present
or future .
|
Mustn't + verb1
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Express obligation in the past .
|
Had to + verb1
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Express necessity in the present
or future .
|
Need to + verb1
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Express absence of necessity in
the present or future .
|
Don’t have to / don’t need to /
needn't + verb1
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Express necessity in the past .
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Needed to + verb1
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Express absence of necessity in
the past .
|
Didn’t have to / didn’t need to +
verb1
|
|
Used to give strong advice .
|
Had better + verb1
|
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Used to express preference about
the present or future .
|
Would rather + verb1
|
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