托福and所连接的两个单数名词作主语，指同一人、同一件事或同一概念时，其谓语动词用单数。例如：My best friend and adviser has changed his mind again.Bread, butter and eggs is typical American Breakfast .If law andsgroupsis not preserved, neither the citizen nor his property is safe.如果不能维持治安，公民和他的财产都不安全。表示时间、距离、重量、体积、金钱的复数名词，作主语时作为整体来看待，谓语动词通常用单数。【例如】Five thousands dollars is quite a large sum of money to me.Fifty miles is too long a distance for one to walk on foot.Ten years has passed but he didn't change at all.托福
托福用于习语come across，主要用法有：(1) 偶然遇见，碰见（=run across）Where did you come [run] across her? 你在那儿碰到她的?I've just come across a beautiful poem in this book. 我在这本书里偶然发现一首优美的诗。(2) 被理解，被传达（=come over）He spoke for a long time but his meaning did not really come across. 他讲了很长时间，但他的意思没有人真正理解。(3) 使人产生某种印象（=come over）Your speech came across very well. 你的演说相当受欢迎。He came across as sympathetic / a sympathetic person. 他给人以有同情心的印象。注意以下用法，它不是习语，其中的across为副词，表示“在另一边”：Come across to my office this afternoon. 你今天下午到我办公室来一趟。托福</p 产品：澳博培训供货总量：不限产品价格：议定包装规格：不限物流说明：货运及物流交货说明：按订单
