Learn Dutch: Als iemand valt, zou je meteen moeten ingrijpen. - If someone falls, you should intervene immediately.

To express advice or moral obligation like "should" in English, Dutch uses the conditional form of zullen (here, zou for the subject je) combined with the infinitive moeten. Literally, this construction translates to "would have to" or "would must".

Why is the word order zou je instead of je zou?

This happens because of the V2 (verb second) rule. The sentence starts with a subordinate clause (Als iemand valt), which takes up the entire first position of the main sentence. The conjugated verb zou must come in the second position, so the subject je gets pushed to the third position.

Why are both moeten and ingrijpen placed at the very end of the sentence?

In Dutch sentences with multiple verbs, all infinitives get pushed to the end of the clause. Here, zou is the conjugated verb holding the second position, which sends the infinitives moeten and ingrijpen to cluster together at the end.

Is ingrijpen a separable verb? Why isn't it separated here?

Yes, ingrijpen (to intervene) is a separable verb. However, you only separate these verbs when they are the conjugated active verb in a main clause. Because it acts as an infinitive here, pushed to the end by zou, it stays together as one complete word.