Learn Turkish: Dedem hastalanınca hastaneye gitmemiz lazımdı. - When my grandfather got sick, we had to go to the hospital.

This uses the past necessity structure from this lesson. We take the verb git (to go), add the verbal noun ending -me, and the possessive ending -miz (our) to get gitmemiz (our going). Then we add lazımdı (it was necessary). Literally, it translates to "our going was necessary".

What does the -ınca suffix on hastalanınca do?

The suffix -ınca (which changes based on vowel harmony) connects two actions and means "when" or "as soon as". Added to the verb root hastalan (to get sick), it creates hastalanınca, meaning "when he got sick".

How is the verb root hastalan formed from the word for sick?

It starts with the adjective hasta (sick). Adding the suffix -lan turns it into a verb meaning "to become sick" or "to get sick".

Why don't we need the word biz (we) before hastaneye?

In Turkish, the "we" is already built into the word gitmemiz through the -miz (our) ending. The first part of the sentence has its own subject (Dedem, my grandfather), but the second part clearly shows who had to go to the hospital without needing an extra pronoun.