Breakdown of Sie hätte die Vorfahrt beachten müssen.
sie
she
haben
to have
müssen
to have to, must
beachten
to observe
die Vorfahrt
the right of way
Questions & Answers about Sie hätte die Vorfahrt beachten müssen.
Why is it müssen and not gemusst at the end of the sentence?
When a modal verb like müssen is used in the perfect tense along with another verb (beachten), it doesn't take its normal past participle form (gemusst). Instead, it uses its infinitive form. This is called the double infinitive rule because you end up with two infinitives at the very end of the sentence: beachten müssen.
The translation says 'should have', but doesn't müssen mean 'must'? Why not use sollen?
You certainly could say Sie hätte die Vorfahrt beachten sollen (She ought to have observed...). However, traffic rules are strict obligations. In German, when talking about a mandatory rule that was broken, hätte ... müssen (literally 'would have had to') is often translated as 'should have' in English. It emphasizes that she was legally required to do it.
How does the word Vorfahrt break down?
It comes from the prefix vor (before or ahead) and the noun die Fahrt (the drive or journey). So die Vorfahrt literally means the right to drive before someone else, which is the exact equivalent of 'right of way' in traffic.
Could I use beobachten instead of beachten, since both can translate to 'observe'?
No, because they mean 'observe' in completely different ways. Beobachten means to visually watch something for a period of time, like watching a bird or a suspect. Beachten means to pay attention to a rule, follow a sign, or respect a law, which is what you must do with the right of way.
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