Unit9第3课时单元语法精讲与精练

九年级人教版英语Unit9语法讲解与练习【语法解析】定语从句●概念【导入】定语 修饰名词或代词的成分（翻译为：......的.......)a dog →a brown dog →a brown dog on the grass 定语从句 修饰名词或代词的句子或在句中作定语的句子，叫定语从句.（翻译为：......的.......)【简单句如何转化成定语从句的.....（1）This is a brown dog . The dog is playing with a cat on the grass. （合并为一句）【思路 找重叠部分--dog →合并和代替】This is a brown dogwhich/that is playing with a cat on the grass.先行词 关系词 定语从句（翻译为：......的.......)(2)These are the gifts . Lily gave me the gifts on my birthday .that /which Lily gave me on my birthday.关系词 定语从句（翻译为：......的.......)先行词被定语从句修饰的名词或代词, 叫先行词, 而定语从句位于先行词的后面。

关系词用来引导定语从句的词叫做关系词。

●分类讲解（一）当先行词为人时的情况1)He is a person. T he person does what he says. (合并句子）He is a person that/who does what he says. (person是先行词, that/who引导的定语从句，在从句中作主语)2)He is the man. I have been looking for the man. (合并句子）【众里寻他千百度，蓦然回首，那人却在灯火阑珊处.....He is the man who / whom I have been looking for.（the man 是先行词，who/whom引导定语从句, 在从句中作宾语）【归纳】当先行词为人时，用关系词who/whom/that引导定语从句，关系词who/that在从句中可以作主语或宾语，whom在从句中只做宾语。

Unit 9 I like music that I can dance to词句精讲精练【词汇精讲】1. along withalong with是介词短语，意为“连同……一起”，与together with同义。

如果句子的主语为单数，后接along with等介词短语时，谓语用单数。

例如：He sent the books along with other things.我把一些书和其他东西一起寄走了。

The apple，along with some grapes，has gone bad. 苹果，还有葡萄，都变质了。

【拓展】单数主语即使后面带有由with, along with, together with, like, but, except, besides, as well as, more than, no less than, rather than等引导的短语，谓语动词仍用单数。

例如：Air as well as water is matter. 空气和水都是物质。

My friend said everyone except Tom and Jim was there then.我的朋友说那时除了汤姆和吉姆大家都在那儿。

2. prefer（1）prefer是及物动词，意思是“更喜欢、比较喜欢”，相当于like better。

例如：Which do you prefer(=like better), rice or bread?你比较喜欢哪一样，米饭还是面包？（2）由prefer构成的短语：1）prefer A to B意为“喜欢A胜过B、比起B来更喜欢A”，此短语中A和B的形式一样, 可以是名词、代词或者动名词，但必须两个词形式统一。

例如：We prefer apples to oranges. 比起桔子来我们更喜欢苹果。

My grandma prefers taking a walk to sitting in front of the TV.我奶奶宁愿去散步而不愿看电视。

Unit 9 What does he look like？重点句型和表达1. short hair短发（1）short形容词，意为“短的；矮的”。

①short作“短的”讲时，可以指距离、时间、物体的“短”，反义词是long（长的）。

This ruler is short,but that one is long.这把尺子短，但是那把长。

②short作“矮的”讲时，可以指人的个子矮，反义词是tall（高的）。

He is a short man.他是一个身材矮小的人。

（2）hair名词，意为“毛发；头发”。

She has long hair.她留着长发。

He is a short fat man with no hair on his head.他是一个光头的矮胖男人。

2.straight hair直发straight形容词，意为“直的”，可用来形容头发，也可形容其他事物，常作定语或表语。

Draw a straight line with a ruler.用尺子画一条直线。

The street is straight.这条街道是笔直的。

【拓展】straight也可作副词，意为“直接地，径直地”。

I have to go straight home.我必须直接回家。

3. tall 高的tall形容词，意为“高的”，既可以指人的身高，也可以表示物体高大。

She is a tall girl.她是个高个儿女孩。

He lives in a tall building.他住在一懂高楼里。

【注意】high与tall形容建筑物“高”时可以互换，但形容mountain（山)时，只能用high。

【辨析】tall与high4.What does he look like? 他长什么样？“What + do/does + 主语+ look like?”是用来询问某人的身材或长相,即外貌。

回答时可用“主语+be+形容词”或“主语+have/has +形容词+名词”。

八年级上册Unit 9单元语法精讲精练情态动词can语法精讲情态动词can意为“可以、能”，后跟动词原形，其否定形式是can't，主要有以语法精练一、单项选择1. —Is that Mr. Zhou?——It _______ be him. He has gone to Beiji ng.A. mayB. canC. can't2. （2018年湖北咸宁）－Mom， ______ I play computer games this evening?—Sure, but you ______ finish your homework first.A. can; mustB. can; mustn'tC. may; couldD. may; can't3. （2018 年安徽省）－May I watch TV, Dad?—When your homework is finished, you _______ .A. shouldB. canC. mustD. need4. （2018年山东滨州）－______ I swim here?—I'm sorry. Children _______ swim alone here. It's very dangerous.A. Must; can'tB. May; mustC. Can; mustn'tD. Can't; can5. （2019 江苏宿迁）—Mum, may I go to see a film with my cousin?—You ______ go if you have finished your homework.A. mustB. needC. shouldD. can6. （2019 北京）—Lily, __ you finish the letter in ten minutes?—Yes, I can.A. mustB. shouldC. needD. can7. （2019 贵州毕节）—__ I take the magazine out of the reading room?I ,—I ' m sorry you _____ .A. Could; couldn 'Bt. Must; couldn 'tC. Will; can ' tD. May; can 'tA. can 'tB. may not8. （2019 湖北黄石）—the beautiful lady with glasses over there looks like our English teacher.—It _____ be her. She has gone abroad.D. needn 'tC. Mustn 't9. (2019 江苏常州) —_____ I keep the book for a week?—Sorry, I ' m afraid you _______ .A. Need; couldn ' tB. Need; can 'tC. May; couldn ' tD. May; can 't10. (2019 江苏淮安)—Will you stay here for dinner with us?—Sorry, I ______ . My mother is waiting for me at home.A. mustn 'tB. can 'tC. needn 'tD. couldn 't11. (2019 广东) Dirty air and water are harmful. They _____ kill plants, and even people.A. canB. can 'tC. shouldD. shouldn 't12. (2019 湖北孝感)—May I join the art club, Dad?—If you have interest, you _______ .A. shouldB. canC. have toD. mustII•根据问句或答语及括号内所给提示语，完成下列对话。

单元核心语法之定语从句一、定语：对名词或代词起修饰限定作用，是用来修饰名词或代词的。

可作定语的成分有：形容词、代词、数词、名词、动词ing、介词短语后置、不定式后置、句子等。

单个词作定语时，通常放在它所修饰的名词之前。

Mark Twain is a famous writer.(_____________作定语)Yao Ming is a basketball player. (_____________作定语)I have read a book called Journey to the West. (_____________作定语)Do you have anything to eat?(____________作定语)She won three toys in the singing competition.(________作定语、_____________作定语) These are Tom’s pens. (______________作定语)注意：短语或从句作定语时，放在被修饰的名词之后。

The boys in the room are in Class Four. (______________作定语)Please tell me the reason why you are late. (________________作定语)二、定语从句定义：以一个完整的句子来修饰限定某一名词或代词。

它的作用相当于形容词的作用.I like music that I can dance to.先行词+关系词+定语从句（陈述句）三、定语从句两要素先行词：被定语从句修饰的名词或代词叫先行词。

关系词：引导定语从句的词叫关系词。

关系词一般紧跟在先行词之后引导定语从句，并代替先行词在定语从句中充当句子成分，因此关系词既起连接作用，又充当从句中的一个成分。

关系词分关系代词(that, which, who, whom, whose)和关系副词(when, where, why)。