I'm learning complements of duration (CoD) at the moment, and I've been taught the following structures:
S V + 了/过 + CoD*
S V Obj. V + 了/过 + CoD* (used for personal pronoun objects)
S V + 了/过 + CoD (的) Obj.*
However, I keep encountering sentences such as 我等了他半个小时, which contain personal pronoun objects but appear to fit into the structure below (which they have not taught in class):
- S V + 了/过 + Pron. CoD*
Should I add the above structure to my repertoire for personal pronoun objects, or is it not always valid? Any explanation as to why we don't have to repeat the verb for such cases?