Мuzaffar Choriyev Мuхаmmаdi G‘opporov

Having collected all the material (= After he had collected all the material), he was able to write a full report on th work of the comission.

Ikkita bevosita oldinma-ketin sodir bo‘lgan ish-harakati bo‘lsa va bir ish-harakatni ikkinchisidan oldin sodir bo‘lganini ta’kidlash zarurati bo‘lmasa Perfect Participle emas Present Participle ishlatiladi va bu iboralarga to‘g‘ri keladigan ergash gaplarda fe’l Simple zamonlarda ishlatiladi:

Arriving at the station (= When we arrived at the station) we went straight to the booking office. (Taqqoslang: We arrived at the station and went straight to the booking office). Receiving the telegram (When he received the telegram), he rang up the director. (Taqqoslang: He received the telegram and rang up the director.)

Izoh: Ushbu hol uchun Perfect Participle bilan bir qatorda after predlogi bilan kelgan Simple Gerund ham ishlatilishi mumkin: