the plastic shopping bags,chopsticks,to-go boxes and mineral

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the plastic shopping bags,chopsticks,to-go boxes and mineral-water bottles,to name but a few,wh
the plasticshopping bags,chopsticks,to-go boxes and mineral-water bottles,to name but a few,when not properly disposed of,engender a colossal amount of non-biodegradable refuse.为什么when后面直接加not而没有加助动词来否定,另外 disposed 后面为什么有个of.

引导时间状语的 when、while、after、before 等连词,从句中可以省去主语以及助动词直接用分词短语来表示,
when not properly disposed of,其实就等于 when (they are) not properly disposed of,其中省去了指代“塑料购物袋、筷子、拉动式旅行箱和矿泉水瓶”的代词 they 和构成被动语态的助动词 are.
除此以外,if、because、although 等连词引导的从句都可照此办理.如：
--While doing it,he told me how to do it well = While he was doing it,he told me how to do it well.他做这件事的同时告诉我怎样才能把它做好.
--I'll do it if dying in the attempt = I'll do it if I die in the attempt.即使会丧命我也要试一下.
--I'll do it if dying in the attempt = I'll do it if I die in the attempt.即使会丧命我也要试一下.

the plastic shopping bags,chopsticks,to-go boxes and mineral further,the proliferation of plastic shopping bags and eatin Rubbish,such as plastic bags and boxes.''white pollution '' The discarded plastic bottles and bags that pollute almost e No free plastic bags in the supermarkets( ) to reduce white Say no to plastic bags When shopping,we should refuse to use plastic bags这句话对吗,如果对, 翻译这句：Told to hand over unnecessary plastic shopping bags China is not the first country ____ plastic shopping bags.Ma The Chinese once used 3,000,000,000 plastic shopping bags a Used plastic bags,cans,bottles and so bags and boxes known as white pollution