Unit 1 Know yourself 知识点讲解+精选精练 2023-2024学年牛津译林版英语九年级上册

Unit 1 Know yourself 知识点讲解 精选精练 2023-2024学年牛津译林版英语九年级上册 语法知识点讲解 1. and, but, or和so and, but, or 和so 都是连词，可以连接两个词语或句子。 ★连词and 表示“和，并，而且”，可以用来连接两个结构对等的词语或句子，也可以起到承上启下的作用，所连接的词语或句子之间是并列关系。例如： Millie is tall and slim. Sandy turned off the lights and closed the door. 【注意】在否定句中，通常用or 连接两个结构对等的成分，而不用and。例如： Simon cannot play basketball or football. ★连词but 表示“但是，而，可是”，所连接的词语或句子之间是转折关系。例如： It is sunny but windy today. I went to see my grandfather but he was not at home. ★连词or 表示“或者”，连接的词语或句子之间是选择关系。但是，在否定句中，or 表示的是并列关系，而不是选择关系。例如： Will you go shopping this afternoon or after supper? You can ask your teacher or search on the Internet. You cannot help her or ask others to help her. ★连词so 表示“所以”，连接的词语或句子之间是因果关系。例如： I got up late this morning, so I was late for school. Daniel is busy doing his homework, so he can’t go out to play football with me. 【注意】so 和because 不能同时在一个句子中使用。例如： 错误的表达：Because he was ill, so he couldn’t come. 正确的表达：Because he was ill, he couldn’t come. He was ill, so he couldn’t come. 2. both ... and ..., not only ... but (also) ..., either ... or ... 和neither ... nor ... both ... and ..., not only ... but (also) ..., either ... or ...和neither ... nor ...都是连词，可以连接两个并列的成分，如主语、谓语、宾语、状语等。 ★both ... and ... 意为“…… 和…… 都……”。如果both ... and ...连接的两个成分作主语，谓语动词通常用复数形式。例如： Both Millie and Simon are middle school students. Both Sun Qiang and Li Dong come from Jiangsu. ★not only ... but (also) ... 意为“不但…… 而且……”，其中also 可以省略。如果not only ... but (also) ...连接的两个成分作主语，谓语动词通常与but (also)后面的主语在人称和数上保持一致，即遵循所谓的“就近原则”。例如： Not only Daniel but (also) Simon is good at Maths. Not only Li Hui but (also) his brothers play football well. ★either ... or ...意为“不是……就是……；或者 ……或者……”。如果either ... or ...连接的两个成分作主语，谓语动词通常与or 后面的主语在人称和数上保持一致，也应遵循“就近原则”。例如： Miss Wu may be either in the classroom or in the library now. Either you or he has known the news. ★neither ... nor ...意为“既不……也不……”。如果neither ... nor ...连接的两个成分作主语，谓语动词通常与nor 后面的主语在人称和数上保持一致，也应遵循“就近原则”。例如： NeitherWang Gang nor we believe there ar