 When "To" is used as a preposition rather than an infinitive?
May I ask if the using of "to + gerund" is correct in the sentence?
"In parallel to this, teachers should be given enough room to establishing a collaborative mechanism under administrative arrangements, so that they can conduct teaching discussions at the same period of time and make plans for the school-based curriculum."
And is there any way to test whether the "to" is a preposition or an infinitive in a sentence? |