1、challenge【点拨】challenge 作名词，可以表示以下含义：a. 挑战；挑战书 b. 质疑 c. 挑战性 d. 具有挑战性的事物【看例句记词义】辨析下列各例句中 challenge 的含义，把相应的字母填到句后的横线上。Making a speech in front of many people is always a challenge for me. _His article is a challenge to the theory that low self-esteem has something to do with unhealthy lifestyles. _The
2、 tiger roared (怒吼) a challenge to the enemy in the distance. _There must be very little challenge in the work for you. _Keys: dbac【拓展】challenge 还可以作动词，表示以下含义：(1) 表示“向挑战” ，常用搭配有 challenge sb to sth, challenge sb to do sth。如：He challenged John to a fight as soon as he saw him.他一见到约翰就向他提出挑战，要求打一架。The G
3、erman boy challenged the Korean boy to discuss the matter with him in English.那个德国男孩向那个韩国男孩挑战，让他用英语跟他讨论那个话题。(2) 表示“激励” ，常用搭配是 challenge sb to do sth。如：His new findings challenged him to rethink the skills he was using.他的新发现激励他重新审视他所使用的技巧。(3) 表示“对表示质疑” ，常用搭配是 challenge sth。如：In our group discussion,
4、ideas are challenged, corrected, and challenged again.在我们小组讨论的时候，各种想法被质疑了，然后被修改，然后又被质疑。【即学即练】补全句子，每空一词。1) In public, Michael challenged him _ a dance contest.2) He had actually said these things to her when she challenged _ _ name his complaints.4. support【点拨】support 作动词，可以表示以下含义：a. 支撑；承受重量 b. 供养 c.
5、 支持【看例句记词义】辨析下列各例句中 support 的含义，把相应的字母填到句后的横线上。He has to work hard because he has a large family to support. _Will you support me in this election (选举)? _The plastic (塑料的 ) table cant support the television. _Keys: bca【拓展】support 还可以作名词，表示“支撑；支柱；支持；支援”等含义。【即学即练】补全句子，每空一词。1) 他那瘦弱的双腿不足以支撑他的体重。His weak legs are not strong enough to _ _ _.2) 在这件事情上，我们是支持你的。We _ _ in this matter.3) 经过两星期的艰苦工作之后，我们赢得了他的支持。We finally won _ _ after two weeks of hard work.
