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Model Verbs - Coggle Diagram
Model Verbs
Shall
Replace "will" in the question
Ask for some opinions
Should
Replace "Shall" in the past
Predict for the future to show the wanting of the speaker
Would
Replace "will" in the past
Assumption
Invite, Request
Must
Predict in the past with almost sure:
S+Must have done+ O
Compulsory
Forbid, Prevent
Have to
Mission
Less than "Must"
In (-),
Have to
-
Must
are replaced by
"Had to"
Need
Lower the properties (feature) of "must"
Must I do it right now? --> No, you needn't. You can do it tomorrow
In (+), "need" -> "need(s) to V"
"Need" only with (-)
Dare
He daren't tell the truth
DARE or NEED can act as a "model V" or "main V"
Ought
Lower than "Should"
Past: Describe a disagreement for the action in the past
S+ ought to have done+ O
Predict in the past
Can/ Might (not)+ have been done+ O