For sentence 3, I understand it in this way, "He watched--------->(for the purpose of) to make sure he finished the job". It is not "watched to" but it is "He watched" +"to make sure he finished the job". Let's wait others' views.
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Joey_fiveany other somments on the "watch to" usage??Hello
Paco2004so you mean in this usage, "watch to" doesn't really mean watch, it means "observe" or "monitor" ...?Joey_fiveany other somments on the "watch to" usage??Hello
"The teacher watched (=be on alert) to see what his students would do"
paco
1) She watched him climb the mountian.
2) He watched the tears rolling down from her eyes.
3) He watched to make sure he finished the job.
... I've checked a few dictionar[ies] and none of them mention that "watch" can be followed by "to".
Joey_fiveso you mean in this usage, "watch to" doesn't really mean watch, it means "observe" or "monitor" ...?Yes, this "watch" is an intransitive verb to mean "stay alert".