pair of shoes 前面用is还是are

问题描述:

pair of shoes 前面用is还是are
还有像two bags of rice
单数还是复数

pair of shoes ----is
two bags of rice----复数顺便问一下,切成两半的两半怎么翻译cut sth in halfcut sth into halvescut sth in twocut sth into two 注意不同介词(in/ into)