精选优质文档-倾情为你奉上Unit21. visitorvisit v./n. on a visit to前往的拜访 2. like像prep./喜欢v. 她像她爸爸，喜欢做饭。She like her father, likes cooking. 3. waiterwaitress(女服务员)waitv.waiting-room(候车室、候诊室)4. helpfuladj. 他帮我学习英语。He help me with my English.(helpless adj.) 她忍不住哭了。She cant help crying. 随便吃点水果吧。Help yourself to some fruit. 缇娜帮助妈妈打扫卫生。Tina help her mother do some housework.5. skill表技巧，不可数名词，由much和great修饰。学习技能:study skills 高超的技巧:great skill6. problem有待解决的问题；q
