相关简介
本课件为人教版高中英语必修一《Teenage Life》Period Two PPT课件，共91页，聚焦课堂新知讲练。内容围绕“挑战”“困惑”“流利”三个核心词汇展开，通过例句、用法详解和语境串记，帮助学生深入理解词汇含义及用法，为高中英语学习打下坚实基础。
一、challenge 挑战；艰巨任务；怀疑；向……挑战
原文例句：Going from junior high school to senior high school is a real big challenge. 从初中过渡到高中真是一个巨大的挑战。
用法示例：Their school challenged ours to a football match. 他们学校向我们学校挑战，要进行足球比赛。
Last Sunday Tom challenged me to run, and I accepted the challenge. 上周日汤姆向我挑战赛跑，我接受了挑战。
拓展句子：There will be many difficult and challenging days ahead. 今后将会有很多艰苦和充满挑战性的日子。
二、confusing 难以理解的；不清楚的
原文例句：The first week was a little confusing. 第一周有点令人困惑。
【用法详解】
Don't confuse Austria with/and Australia. 不要把奥地利与澳大利亚弄混了。
I feel confused to hear the news. 听到这个消息我感到很困惑。
The old woman looked at him in confusion. 老妇人困惑地打量着他。
【语境串记】
They confused me by asking so many confusing questions. I was totally confused, standing there in confusion, not knowing what to do. 他们提了如此多令人费解的问题，把我难住了，我完全困惑了，茫然地站在那里不知所措。
三、fluent (尤指外语)流利的；熟练的
释义：able to speak a foreign language very well; expressing yourself in a clear and confident way.
原文例句：I know that Chinese is a very difficult language, but I hope to be fluent when I graduate. 我知道汉语是一门很难学的语言，但我希望毕业时能说一口流利的汉语。
He is fluent in five foreign languages. 他能流利地讲五种外语。
Having stayed in America for many years, he can speak English fluently. 在美国待了很多年之后，他能流利地说英语了。
He speaks English and French with fluency. 他的英语和法语说得流利。
