Thanks to her assistance, my experiment was successful.
(COME) → But for her assistance, my experiment would not have been successful.

On arrival in Paris, John visited the Eiffel Tower.
(VISIT) → Hardly had John arrived in Paris when he visited the Eiffel.

Ms. Brown is very proud of her sons. All of them as professors at MIT now.
(WHOM) → Ms. Brown takes pride in her sons, all of whom as professors at MIT now.

#yuno