当one of/all of/both of…作主语时

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<p class="ql-block">"One of", "all of", 和 "both of" 是英语中常用的介词短语,用于指代一组事物或人中的一部分或全部,但在用法和含义上有所区别,尤其是当它们作主语时,属于单数还是复数,应予以认真辨别。</p><p class="ql-block">1)One of…</p><p class="ql-block">用于指代一组事物或人中的一个,of后面通常跟复数名词和定冠词the,但谓语动词为单数形式,例句:</p><p class="ql-block">She is one of the best students in her class. (她是她班上最好的学生之一。)</p><p class="ql-block">One of the books on the table is mine. (桌子上的书有一本是我的。)</p> <p class="ql-block">2)All of…</p><p class="ql-block">用于指代三个以上的事物或人的全部,of后面跟复数名词或不可数名词,谓语动词的形式视主语的单复数概念确定,例句:</p><p class="ql-block">All of the students in the class passed the exam. (班上所有学生都通过了考试。)</p><p class="ql-block">All of them are ready to start.</p><p class="ql-block">(他们都准备好了。)</p><p class="ql-block">All of the milk has been drunk.(所有的牛奶都被喝完了。)</p><p class="ql-block">All of the water in the bottle is gone. (瓶子里的水都喝完了。)</p> <p class="ql-block">3)Both of…</p><p class="ql-block">指代两个事物或人,of后面跟复数名词,谓语动词为复数形式,例句:</p><p class="ql-block">Both of the books are interesting. (这两本书都很有趣。)</p><p class="ql-block">Both of them are my friends. (他们两个都是我的朋友。)</p><p class="ql-block">4)区别总结</p><p class="ql-block">△数量上:</p><p class="ql-block">"One of" 指代一组中的一个;</p><p class="ql-block">"all of" 指代一组中的全部;</p><p class="ql-block">"both of" 指代两个。</p><p class="ql-block">△作主语时,谓语动词形式:</p><p class="ql-block">"One of…" 谓语动词为单数形式;</p><p class="ql-block">"all of…" 当of后为复数名/代词时谓语为复数形式,当of后接不可数名词时谓语动词为单数形式;</p><p class="ql-block">"both of…" 谓语动词为复数形式。</p>