Question

both of pens are mine这样说对吗

翻译：这两支笔都不是我的
neither of/both of/either of/none of/both..and../neither..nor../either..or../等等,（谓语）动词都用什么形式?

Answer 1

Neither of the two pens is mine.
Both not 不能用于此句,因为是部分否定,Both of the two books are not mine.要译为“两支笔不都是我的”,both后面谓语动词用复数.
Either of the two pens is not mine.(一般不这么说话.多用neither of)
none of也不用于此句,因为它至少需要三个物体,后面谓语动词单复数均可.
Both and用于否定句也是部分否定,所以也不适用在这里.
neither nor 和either or都用就近一致原则,在此处体现不出来.
Neither this pen nor that one is mine.
Either this pen or that one is not mine.(一般不这么说话.多用neither nor)
举个就近一致的例子：Neither this pen nor those two pencils are mine.(谓语动词根据较近的pencils变化)