It's quite a jolt for us as tutors when we get new sec 1 and sec 2 students and they have not an inkling of how to use or what is a past participle.
We would like to think these should have been established and enforced at primary school level especially before they reach pri 5.
Probably they might have forgotten. We have to think good thoughts.
This post is not meant to demean anyone. Far from it.
Having said that, it's now our responsibility to paper over the cracks and strengthen their language use.
We try our best to enforce the use of past participle during their formative years from Pri 1 - Pri 4 during our classes.