标题: 求助一个非常小白的问题.. either的用法 [打印本页] 作者: Nancy0c 时间: 2012-12-18 16:50 标题: 求助一个非常小白的问题.. either的用法 曼哈顿句子改错第4版36页 Consider this example: The discovery of new medicines (was/were) vital to the company's growth. What is the subject, discovery or new medicines? If you ask yourself "What is vital to the company's growth?" you may be able to talk yourself into either choice.