Unit 4 A good read 单元语法梳理和知识点梳理2022-2023学年牛津译林版英语 八年级下册

Unit4 A good read 语法讲解与训练 一、【‘Wh-’words+‘t o’ -infinitives的用法讲解】 不定式和疑问词连用，可以作句子的主语、宾语、表语等。疑问词包括疑问代词what、 which、who和疑问副词how、when、where。常和“疑问词+动词不定式”结构连用的 动词及动词短语有：know，learn、see、hear、ask、tell、decide、explain、find out、 forget、remember、understand等。  例： ① When to have the party is not known. （主语） 何时举行晚会还不知道。 ② The problem is where to get a computer. （表语） 问题是到哪儿弄到一台电脑呢。 ③ No one knows how to do it.（宾语） 没人知道如何做这件事。 ④ I really don’t know which one to choose. （宾语）  我真的不知道选择哪一个。   ★不定式和疑问词连用作宾语时有时可以改为宾语从句。例： ① I don’t know what to do next. =   I don’t know what I should do next. 我不知道下一步该做什么。 ②Could you tell me how to get to the nearest bank? =Could you tell how I can get to the nearest bank? 你能告诉我如何到达最近的银行？ ③ Paul doesn’t know who to turn to for help. = Paul doesn’t know who he should turn to for help. Paul不知道该向谁求助。 【注意】特殊疑问词why后面不能用“to do”,但是可以跟宾语从句。例： Suzy will explain why to recommend this book.（.×） Suzy will explain why she recommends this book. (√) 【经典试题】 We’re talking about where______(spend) our coming summer holiday.(2013江苏泰州中考) 【答案】to spend 【经典试题】 一Simon, I hear you are going abroad for further study. Have you decided _______? 一 Next September.(2013江苏南通中考) A. when going B. when to go C. how going D. how to go 【答案】B 【经典试题】 I don’t remember _______ the book yesterday. (2013北京中考) A. where I put B. where did I put C. where will I put D. where I will put 【答案】A 【经典试题】 一Philip has gone to New Zealand． 一Oh，can you tell me________?(2013江苏苏州中考) A．when did he leave B．when he is leaving C．when he left D．when is he leaving 【答案】C 二、【must /have to 的用法讲解】 1、must 和have to 都可以表示需要做某事。不同点在于： must侧重于说话人的主观意志，表示主观的义务和必要，主要用于肯定句和疑问句，意思是“必须，得，要”。have to侧重于客观的需要，含有“不得不”的意味。例： (1)He must say it in English. 他必须用英语说这件事。(I want him to do.) (2)He has to say it in English. 他不得不用英语说。(Because he doesn’t know Chinese.) (3)He must move the big box.他必须自己搬这个大盒子。 (I am too busy to help.) (4He has to move the big box.他只