
Originally Posted by
Casiopea "to swim" is an infintive, and the events infintives express are unactualized. An unactualized event hasn't happened yet, or the speaker hasn't yet experienced it, or the event is factual, a fact. That's how it is used here:
Max: Do you like to swim?
Sam: Yes, I do. I like to swim. (That's a fact)
"swimming" is a gerund, and the events gerunds express are actualized. An actualized event has happened, the speaker has either experienced it or knows about it.
EX: I like swimming. (I've done it before)
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"to be" is an infinitive, so it expresses an unactualized event, one that hasn't happened yet, a meaning that the future also expresses:
EX: This meeting is to be continued.
EX: This meeting will be continued.
The other difference between "to be" and "will", aside from meaning, is structure. "to be" cannot function as a main verb. It needs a form a BE, like this,
EX: Max is to be the next President.
EX: Max was to be the next President.