精选优质文档-倾情为你奉上选修7unit4重点词汇以及词组,词组辨析等基础知识词汇学习本单元重点词汇扩展学习典型例子1. operate(vt. vi)操作,控制,使运行,经营,动手术operator(cn.)电话操作员,技工operation(cn.)手术,行动,运行1) The doctor told me that I need an _ at once.2) Tom only _ better under great pressure.3) Dial 114 and you can ask the _ to help you.2. political (adj.) 政治的,政党的,政府的politician(cn.)从政者,政治家politics (n.)政治(学科),政治事务politically(adv.)政治上4) After graduation, hes thinking of going into_