牛津译林版九年级上册 Unit 2 Colour 单元知识过关第3讲 语法精讲精练(含答案)

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名称 牛津译林版九年级上册 Unit 2 Colour 单元知识过关第3讲 语法精讲精练(含答案)
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更新时间 2025-10-03 09:44:16

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9A第二单元知识过关第3讲--语法精讲精练
一、语法复习清单(按语法功能分类)
(一)宾语从句
核心规则
1. 语序要求:宾语从句必须用陈述语序(主语 + 谓语),不可用疑问语序。
错误:I wonder if will he come.
正确:I wonder if he will come.
2. 连接词选择:
陈述事实 / 肯定内容:用 that(可省略);
表 “是否”:用 if/whether(两者可互换,whether 可与 or not 连用,if 不可);
表 “什么 / 怎么 / 哪里” 等疑问:用 what/how/where 等特殊疑问词。
3. 时态一致:
主句为过去时(said/wondered/believed),从句用相应过去时态(一般过去时、过去将来时等);
从句表客观真理 / 永恒事实(如地球绕太阳转),无论主句时态,从句始终用一般现在时。
示例
He said (that) he was good at English before.(主句过去时,从句一般过去时)
Our teacher told us the Earth moves around the Sun.(客观真理,从句一般现在时)
I wonder if/whether I can use green to decorate my study.(表 “是否”,陈述语序)
(二)if 引导的真实条件句
核心规则
1. 结构:If + 一般现在时(从句),主句 + 一般将来时 / 情态动词(can/will/may)(即 “主将从现”)。
2. 含义:表示将来可能发生的真实情况,“如果……,就会 / 能……”。
示例
If it rains tomorrow, we will cancel the outdoor activity.(从句一般现在时,主句一般将来时)
You can avoid mistakes if you learn about colour meanings.(从句一般现在时,主句情态动词)
动词形式变化(词形转换及时态)
1. 词性转换(重点)
基础词(词性) 转换词(词性) 规则 示例
celebrate(v) celebration(n) 动词→名词(去 e+ion) an outdoor celebration
certain(adj) certainly(adv) 形容词→副词(+ly) He will certainly die.
person(n) personal(adj) 名词→形容词(+al) personal development
relax(v) relaxing(adj) 动词→形容词(+ing,表 “令人放松的”) a relaxing environment
relaxed(adj) 动词→形容词(+ed,表 “感到放松的”) He feels relaxed.
2. 时态应用(重点)
一般过去时:表过去发生的动作 / 状态,常与 yesterday/last month/ago 等时间状语连用;
示例:She held a colour-painting party last month.
现在完成时:表 “过去动作对现在的影响”,结构 “have/has + 过去分词”;
示例:We have found out the secret behind the colour’s meaning.
动词 - ing 形式:用于 “spend + 时间 + (in) doing”“than 后接动名词” 等结构;
示例:She spent two hours decorating the room. / It’s cheaper than buying a sofa.
(四)并列连词(not only...but also.../neither...nor.../both...and...)
核心规则
1. not only...but also...:“不仅…… 而且……”,连接并列成分(主语 / 宾语 / 谓语),谓语动词就近原则(与靠近的主语保持一致);
2. neither...nor...:“既不…… 也不……”,表否定,同样遵循就近原则;
3. both...and...:“两者都……”,表肯定,连接主语时,谓语动词用复数。
示例
Not only my parents but also I like blue.(主语 I 靠近谓语,用原形 like)
Neither Lucy nor I have used the new colour pencils.(主语 I 靠近谓语,用 have used)
Both red and yellow are warm colours.(主语为两者,谓语用复数 are)
(五)it 作形式主语 / 宾语
核心规则
1. it 作形式主语:代替 “to do 不定式” 或 “that 从句”,避免句子头重脚轻,常用结构:
It is + adj(necessary/important)+ to do sth;
It is said/thought that...(“据说 / 人们认为……”)。
2. it 作形式宾语:代替 “to do 不定式”,常用结构:sb find/think it + adj + to do sth。
示例
It is necessary to use colours properly.(it 代替 to use colours properly)
It is thought that warm colours can make people happy.(it 代替 that 从句)
She found it easy to mix red and white.(it 代替 to mix red and white)
二、配套语法练习
(一)用括号内单词的适当形式填空(考查动词形式变化及时态)
1. They are going to have an outdoor ______ (celebrate) this evening.
2. He ______ (true) believes that light blue can help people sleep better.
3. My grandma told me she ______ (hold) a colour-painting party with her friends last month.
4. After doing some research, we ______ (find out) the secret behind the colour’s meaning.
5. It’s cheaper than ______ (buy) a new sofa, so we choose to paint the old one.
6. She spent two hours ______ (decorate) her bedroom with colourful stickers.
(二)单项选择(考查宾语从句、if 条件句、并列连词)
1. —I wonder ______. —You can ask the art teacher for help.A. if can I mix red and yellow B. if I can use green to decorate my studyC. if will the colour class start D. if does this purple dress suit me
2. Our geography teacher said that the moon ______ around the Earth.A. moved B. moving C. moves D. move
3. If you ______ warm colours in your room, it ______ feel cozier.A. use; will B. will use; will C. use; is D. will use; is
4. Not only my brother but also I ______ interested in colour design.A. am B. is C. are D. was
5. —Do you believe ______ we can grow plants on Mars —It’s hard to say.A. if B. that C. what D. how
(三)句型转换(每空一词,考查宾语从句、it 作形式主语、并列连词)
1. “It can be dangerous to swim here,” the policeman warned us.(改为宾语从句)
The policeman warned us ______ ______ ______ dangerous to swim here.
We think it is important to learn about colour cultures.(用 it 作形式主语改写)
______ ______ important ______ ______ about colour cultures.
3. Lucy hasn’t used the new colour pencils. I haven’t used them either.(用 neither...nor... 合并)______ Lucy ______ I ______ used the new colour pencils.
4. It will rain this weekend. We won’t go for a picnic.(用 if 合并为条件句)
______ it ______ this weekend, we ______ ______ for a picnic.
5. Tom can’t decide whether to buy the blue pen or the black one.(改为宾语从句)Tom can’t decide ______ ______ ______ buy the blue pen or the black one.
三、练习答案
(一)用括号内单词的适当形式填空
1. celebration 2. truly 3. held 4. have found out 5. buying 6. decorating
(二)单项选择
1. B(宾语从句用陈述语序) 2. C(客观真理,一般现在时) 3. A(主将从现) 4. A(就近原则) 5. B(陈述事实,用 that)
(三)句型转换
1. that it can 2. It is; to learn 3. Neither; nor; have 4. If; rains; won’t go 5. whether he should