1.amuse vt.娱乐,消遣;使发笑→amusing adj. (令人感到)有趣的,逗人笑的→amusement n.娱乐;消遣
2.entertain v.使快乐→entertaining adj. 有趣的;娱乐性的;令人愉快的→entertainment n. 娱乐,消遣
3.examine v. 检查(身体)→examination n. 检查;考试
4.advertise v.征聘,公布→advertiser n. 广告商→advertisement n.广告
5.employ vt.雇佣;使用→employer n.雇用者,雇主→employee n.雇员→employment n.雇佣

examine vt. 检查(身体);调查;考试;仔细观察
①It is necessary to examine how the proposals can be carried out.调查
②The doctor examined her carefully. 检查
③The teacher will examine the students in English.考试
④He went to the Congo to examine a new volcano.仔细观察