四级完形填空的常考词组及固定搭配（1）

　　定语从句的引导词 　　that, who, whom: 非限制性定语从句, 如果修饰人, 一般用who, 有时用that . 如果关系代词在从句中作宾语, 就应当用宾格 whom 或that, 但在大多数情况下都可以省略掉, 在口语中可用who代替whom. 　　Here is the man youve been looking for. 　　He is a man you can safely depend on. 　　The people I spoke to is my cousin. 　　限制性定语从句如果修饰物, 用关系代词that的时候较多, 也有时用which.. 当这个代词在从句中是用作宾语时, 在绝大多数情况下都是省略的, 特别是口语中: 　　Have you everything you need? 　　anything I can do for you? 　　All you have to do is to press the button.