外研版九年级上册M6U2有疑难,课文标题：How to be green句子1：Do you sort the waste before throwing it away?中,“throwing"为什么加ing?句子2：Do you open a window instead of turning on air conditioning?中,”turning"为什么
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外研版九年级上册M6U2有疑难,课文标题：How to be green句子1：Do you sort the waste before throwing it away?中,“throwing"为什么加ing?句子2：Do you open a window instead of turning on air conditioning?中,”turning"为什么
外研版九年级上册M6U2有疑难,
课文标题：How to be green
句子1：Do you sort the waste before throwing it away?中,“throwing"为什么加ing?
句子2：Do you open a window instead of turning on air conditioning?中,”turning"为什么加ing?
句子3：Do you take your own cloth bag when shopping instesd of using plastic bags?中,“shopping"和”using"为什么加ing?
句子4：Find out what can be recycled in your neighbourhood and take part in recycling programmes.中,“recycled”为什么加ed 以及“recycling”为什么加ing?
外研版九年级上册M6U2有疑难,课文标题：How to be green句子1：Do you sort the waste before throwing it away?中,“throwing"为什么加ing?句子2：Do you open a window instead of turning on air conditioning?中,”turning"为什么
before +doing of是介词,而且instead of doing when you are shopping可以简写为shopping,第一个ed是因为被动,第二个就是词组的用法