Questions & Answers about Mina ben var så stela att jag snubblade.
How does the så ... att (so ... that) pattern work in this sentence?
It connects a description to its result. The word så (so) goes right before the adjective stela (stiff) to show the degree of stiffness. The word att (that) then introduces the consequence of being that stiff: jag snubblade (I stumbled).
Why is the adjective stela in its plural form here?
Even though the adjective comes after så and isn't right next to the noun, it still has to agree with the subject it describes. Since the subject Mina ben (My legs) is plural, the adjective takes the plural -a ending to become stela (from the singular base form stel).
How can I tell that ben (legs) is plural if it doesn't have a plural ending?
The word ben is an ett-word ending in a consonant (ett ben), which means it doesn't change form in the indefinite plural (legs = ben). However, the sentence gives us two big clues that it is plural here: the plural possessive word Mina (my) and the plural adjective stela (stiff).
What group of verbs does snubblade belong to?