much has/many have been done to stop the pollution.请说明选A原因
问题描述:
much has/many have been done to stop the pollution.请说明选A原因
答
much 是不可数名词,用第三人称单数,many 是可数名词,用第一人称,句子中说的是抽象的东西被做去阻止污染,所以用不可数名词单数.