Using stative verbs with to-infinitive

Question

When we use *to-*infinitive verbs after preceding verbs, is it possible to use *to-*infinitives with linking verbs?

1. That thief was to deserve the punishment.
2. She is to be learning English.
3. She was to have gone to her apartment.
4. He will to have been attempting to code the program.

Answer 1

a to infinitive is not actually a verb. It is a noun made from a verb, just like a gerund. As complements they function as objects. With link verbs you have only two complement options - an adjective or a noun phrase (gerunds are ok) but almost never infinitives. Your first sentence could be written "The thief was deserving of the punishment." Your other sentences do not contain infinitives.