be to syntax
. In a nutshell: be to is an auxiliary verb that means "to do" (think of it as "to be").The be to construction is a versatile auxiliary verb,
with the following uses: scheduled [be going to],
destined [shall], obligatory [should], imperative, will, and possible [can],
all of which can be interpreted as "to be supposed to do.
Will is used in
if clauses, possible is used only in the negative + passive.
To is the image of an arrow,
so the be to construction is the image of "I am going to".
Short Notes
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