Wouldn’t that be a good idea?
I saw the above example in the Cambridge online dictionary.
please explain to me the use of "be" here?
are there any rules or clue here that suggest that "be" is required?
That would be a good idea Would that be a good idea? Wouldn't that be a good idea? Can you see the pattern?
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That would be a good idea
Would that be a good idea?
Wouldn't that be a good idea?
Can you see the pattern?
Jigneshbharatithere any rules or clue here that suggest that "be" is required?
Modal verbs (like would) must be followed by the base form of another verb.
would like, would say, would do, would find, would be
The alternative, leaving out be, is ungrammatical.
Wouldn't that a good idea? is completely wrong