语补足语中的to be常省略.He was considered the best student in the class. (5) There be结构中 there be可同时省略.或只省略there.如: Anything wrong? (6) 表示年龄的years old, 表示钟点的o'clock, minute等常省略.如:What time is it now? It's ten . 3从句中的省略 (1) 宾语从句.以which, when, where, how和why引起的宾语从句谓语与主句谓语如相同.可省略从句中全部谓语.甚至主语也可省略.仅保留wh-一词.如: He will come, but we don't know when . He didn't come, I wondered why . (2) 定语从句中可省略作宾语的关系代词.如: The man I saw in the street the other day is my teacher. (3) 状语从句.在时间.地点.让步.方式.条件状语从句中.从句主语与主句主语一致.或从句主语是it.则be动词及其主语常可省略.如: I'll tell him that when possible. I won't go there unless (I'm) invited. 【查看更多】