V on n
Structure I: Verbs in phase
|The dog||insisted||on||coming||with me into the room.|
There are only two verbs with this structure. The verb embark indicates that someone starts doing something, and the verb insist indicates that someone does something even though this is not wanted or not reasonable. These verbs are sometimes followed by upon instead of on.
If we win the elections, we will not embark on reforming the constitution before the presidential elections.
She insisted on giving Nina her telephone number, just in case.
When the preposition on (or upon) is followed by a noun group, these verbs have Structure II (see meaning groups II.26 and II.27).
We tried our best, but he insisted upon leaving.