Unit 5 Looking into nature 单元语法专项（作业课件）-【优翼·学练优】2025-2026学年八年级英语下册同步备课（外研版）

该初中英语单元复习课件系统梳理了宾语从句的核心知识，包括定义、that/if/whether引导词用法及主从句时态规则，通过“语法精讲+分层精练”构建从理论到应用的知识网络，帮助学生形成完整语法体系。 其亮点在于融合新课标要求，设计“单句填空-句型转换-微语篇应用”分层练习，如结合仿生学素材的阅读填空，培养学生语言运用能力和逻辑思维品质。这种设计兼顾基础巩固与能力提升，助力教师精准教学，提升复习效率。

优翼 优翼 学练优八年级英语下(WY) 优翼 单元语法专项 优翼 1语法精讲1 定义 在复合句中，由一个句子充当1 这个句子叫作宾语从句。 that:当宾语从句由陈述句变化而来时，由that来引导从句，其中的that无具体意义，常在口语中 省略。如：My mum told me(hat)she used to be thin if和whether: 当宾语从句由一般疑问句变化而来时，用if或whether来引导从句，意为“是否”。从句 部分用2. 语序。如：I ask Sally if/whether she slept well last night. 宾语从句 关 其后紧跟3 时。如：Idon't know whether or not he lies. 只用whetherl而 当宾语从句位于句首表示强调时。如：Whether he lies,I am not sure. 不用f的情况 宾语从句作介词的宾语时。如：It depends on whether she is available. 句子中有if写引导的条件状语从句时。如：He asked me whether I would move to New York if I got the job. 在动词不定式之前。如：Idon't know whether to go there at once. 主句是一般现在时，宾语从句根据实际情况选用时态；主句是过去时，宾语从句通常用过去的某 种时态。如：Li Ming said that he was helping with the housework when his mother came back home. 时态 宾语从句描述客观事实或真理时，其时态不受主句限制，用一般现在时。 如：Dad told me that the sun rises in the east.. 优翼 11语法精练10 I.根据句意用that,if,whether完成句子。 1.-I am looking forward to watching the show. 一Me,too.I believe it'll be fantastic. 2.Diana isn't sure or not Betty will come. 3.I wonder they'll have the races again next year. 优翼 4.The girl is worrying about she will be late for class. 5.（2025·南通改编)一What is special about ants, Jack? 一Well,I know they breathe through the holes on both sides of their body. 优翼 Ⅱ.按要求完成句子，词数不限。 1.My teacher said to us,"18 May is International Museum Day.”(改为宾语从句) My teacher told us that 优翼 2.Susan said,"I will give a report at the meeting. (改为宾语从句) Susan said at the meeting. 优翼 3.Could you help me carry this heavy box?I wanted to know.(合并句子) I wanted to know me carry this heavy box or not. 优翼 4."Do you have a good time at the amusement park?”he asked me.(改为宾语从句) He asked me a good time at the amusement park. 优翼 5.研究表明AI能够提高人们的工作效率。（补 全英语译文) Research shows people's work efficiency.