【theplasticshoppingbags,chopsticks,to-goboxesandmineral-waterbottles,tonamebutafew,whtheplasticshoppingbags,chopsticks,to-goboxesandmineral-waterbottles,tonamebutafew,whennotproperlydisposedof,engenderacolossalamountofnon】

　　theplasticshoppingbags,chopsticks,to-goboxesandmineral-waterbottles,tonamebutafew,wh

　　theplasticshoppingbags,chopsticks,to-goboxesandmineral-waterbottles,tonamebutafew,whennotproperlydisposedof,engenderacolossalamountofnon-biodegradablerefuse.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.