找阿找,金山词霸的解释蛮好的,贴给大家: Every is representative of a large class of English words and expressions that are singular in form but felt to be plural in sense. The class includes, for example, noun phrases introduced by every, any, and certain uses of some. These expressions invariably take a singular verb; we say Every car has (not have) been tested. Anyone is (not are) liable to fall ill. But when a sentence contains a pronoun whose antecedent is introduced by every, grammar and sense pull in different directions. The grammar of these expressions requires a singular pronoun, as in Every car must have its brakes tested, but people persist in using the plural pronoun, as in Every car must have their brakes tested. Although the latter pattern is common in the speech of all groups, it is still widely regarded as grammatically incorrect in writing. |