Unit 1 Relationships 单元典型句式结构讲解及对应练习 课件-2025-2026学年高中英语北师大版选择性必修第一册

该高中英语单元复习课件系统梳理了If only虚拟语气、否定词置于句首的倒装、as引导非限制性定语从句、never...more...比较级表最高级等核心句式，以教材原句为起点，通过“用法归纳-易混点对比-情境练习”构建知识网络，串联语法规则与语言应用逻辑。 其亮点在于采用“基础填空-句式升级-话题写作”分层设计，如将环境保护话题句子改写为倒装结构，培养语言表达能力与逻辑思维。教师可借助此资料精准定位学生薄弱环节，助力高效复习与核心素养提升。

UNIT 1　RELATIONSHIPS 单元典型句式结构讲解及对应练习 1.[教材原句] Sometimes I think,if only I could call him and ask for his opinion! If only... 归纳 点津 only if表示“只有,只要”,引导条件状语从句,不用虚拟语气;若其引导的从句置于句首,且与主句之间没用逗号隔开,则主句要用倒装语序。 随堂练习 单句语法填空 ①If only I 　　　　　　　　　　　(study) harder in my youth,I would have more opportunities and a better future now.  ②My favorite singer will come to our city and hold a concert next Sunday.If only I 　　　　　　　__________(take) photos with her then.  had studied could/would take 随堂练习 [写美]句式升级·背诵 ③Without doubt,many endangered species can be saved only if people stop cutting down forests.(写作话题之环境保护) →Only if people stop cutting down forests___________________________　　　　　　　without doubt.(用倒装结构改写)  can many endangered species be saved 2.[教材原句]...not once did she lift her head to enjoy the view outside her window. 否定词在句首引起的部分倒装结构 归纳 (1)句中否定短语not once放在句首,句子使用了部分倒装语序。 (2)not,no等构成的短语表示否定意义,它们放在句首时句子应用部分倒装语序,如in no case,under no circumstances,in no way,on no account,by no means等。 随堂练习 ①Mom is always mild to us,and not once 　　　　　　　she punish us strictly.  ②In the last two years,under no circumstances 　　　　　Betty delayed handing in her homework late.    does has 随堂练习 [写美]句式升级·背诵 ③Even today I can still remember the days when you taught us.In my memory you became impatient not once however simple the question I asked was.(应用文之感谢信) →Even today I can still remember the days when you taught us.Not once in my memory 　　　　　　　　　　　　　　however simple the question I asked was.(用倒装结构改写)  did you become impatient 3.[教材原句] As you may know,we are running a school-wide public speaking competition,and the final will take place at the lecture hall on 10 May (9 am-12 pm). as引导的非限制性定语从句 归纳 随堂练习 单句语法填空 ①Our environment,　　　　　　  you know,is facing severe threats,and it is our collective responsibility to preserve it for future generations.  ②　　　　　 is mentioned above,reading plays a vital role in expanding one’s knowledge and imagination.  as As 随堂练习 [写美]一句多译·背诵 众所周知,水是生命之源,所以我们必须节约用水。(写作话题之环境保护) →③　　　　　　　　　,water is the source of life,so we must save water.  →④　　　　　　　　　　　　　　 water is the source of life,so we must save water.(主语从句)  →⑤　　　　　　　　　　　　　 water is the source of life,so we must save water.(it作形式主语)  As we all know What we all know is that It’s known to us all that 4.[教材原句]But he's also never felt more alone． never...more... 归纳 句中never...more...为比较级的否定形式表示最高级含义。比较级表最高级含义的表达法通常有以下几种： 否定词＋形容词/副词比较级(＋than) 否定词＋so/as ＋形容词/副词原级＋as 比较级＋ than＋the other＋名词复数/any other＋名词单数/any of the other＋名词复数/anyone else 随堂练习 ①I couldn't agree with you ______ (much)． ②No other book has had a _______ (great) effect on my life． 李洋在班里学习最努力。 ①Li Yang studies harder than __________________ in his class．(the other) ②Li Yang studies harder than _________________ in his class．(any other) ③Li Yang studies harder than _________________________ in his class．(any of the other) ④Li Yang studies harder than ___________ in his class．(anyone),句中never...more... more greater the other students any other student any of the other students anyone else 谢谢 $