UNIT1-UNIT5期中专项语法复习讲解课件人教版英语八年级下册

这是一份UNIT1-UNIT5期中专项语法复习讲解课件人教版英语八年级下册，共21页。
人教版英语八年级下册语法复习专项Unit 1---Unit5 Unit 1【语法讲解】询问某人患了何种疾病或遇到了何种麻烦时，常用以下几种结构来表达：What’s the matter (with sb．)? What’s the trouble (with sb．)?What’s wrong (with sb．)? What happened (to sb．)?Are you OK? Is there anything wrong with sb.？should和shouldn't表示建议Should为情态动词，意为“应该；应当”，否定式为shouldn’t，其后接动词原形，无人称和数的变化。常用来表示征询意见、建议、劝告、要求或义务等。 You should drink hot water with honey．你应该喝加有蜂蜜的开水。 He should put his head back他应该把头后仰。We should try our best to help him.我们应当尽力去帮助他。 You shouldn’t watch TV.你不应该看电视。Should用于主语为第一人称的疑问句，表示征询意见。 Should I put some medicine on it?我应当给它敷上药吗？ Should we tell her about it?我们应该告诉她这件事吗？反身代词 1．反身代词可以用作一些动词(短语)或介词的宾语，此时，句子的主语和宾语必须同一个人或物。We must look after ourselves and keep fit．我们必须照顾好自己，保持身体健康。She often buys herself nice clothes．她经常为自己买漂亮的衣服。2．反身代词在句中还可以用作主语或宾语的同位语，用来加强语气，表示“亲自、本人、本身”等意思。但反身代词在句中不能单独作主语。如：I don’t need any help．I can do it myself．我不需要帮助，我自己能做。(主语的同位语)这句话不可表示成I don’t need any help，myself can do it．If you want to know more，you may ask Miss White herself．如果你想了解更多情况，你可以问一问怀特小姐本人。(宾语的同位语)反身代词构成的固定表达：by oneself意为“独自，凭自己”，相当于alone/ on one’s own；enjoy oneself意为“玩得高兴，过得愉快”，相当于have fun或have a good time；teach oneself = learn... by oneself 自学 look after/ care for / take care of oneself 照顾自己help oneself to…意为“随便吃或喝点……，随便用……"；keep…to oneself意为“不将某事说出去”； say to oneself意为“自言自语”。Unit 2 I’ll help to clean up the city parks【语法讲解】---- 动词不定式A. 作主语——为避免句子的头重脚轻，常用it作为形式主语，而真正的主语动词不定式后置。 常用句型：It +be+adj./n.+(for/of sb.) to do sth./It takes sb. some time to do sth.B. 作宾语——动词want, would like, decide, hope, agree, choose, learn, plan, need, forget, remember常接动词不定式作宾语。C. 作（后置）定语——常用于“have/has＋sth.＋to do”或“enough＋名＋to do” “It’s time to do sth.”等结构中。D. 作宾语补足语——tell, ask, want, invite, teach, order, allow等可接带to的动词不定式作宾语补足语，构成tell/ask/want /allow/invite sb.(not) to do sth.结构。动词不定式【注意】动词不定式作使役动词和感官动词的宾语补足语时应省去to：“一感(feel)，二听(listen to, hear)，三让(let, make, have,，四看(look at, see, watch, notice)，半帮助(help)”E. 动词不定式作状语主要用来修饰动词，表示目的，结果或原因。为了强调目的，有时可以把动词不定式放在句首，或在不定式前加in order (to) 或so as (to) “为了，目的是”。常用结构有too + adj./adv. + to do sth.等。Unit 3 Could you please clean your room?情态动词could的用法?表示委婉请求Could you please...?意为“你能……吗？”，could表示一种委婉的语气，please后接动词原形，肯定回答用Yes, I/we can/ will. 或者Sure/Of course/Certainly/OK/All right否定回答用Sorry, I/we can’t.并给出理由: I am/We are doing...或者 I / we must/have to。Could you please not do ...?意为“你能不……吗？”，一般回答用Sorry, I/ we won’t do that again.表示征求许可Could I/we ....? 否定回答用No/Sorry, you can’t. 肯定回答用Yes, you can. (Go ahead.请继续 Do as you like. 请自便 )用情态动词could, should表达建议或劝告( 主语+ could /should + 动词原形 )e.g. (1) 你可以在家里做更多的工作让他们有更多的时间进行适当的交流。You could do more jobs around the house so that they have more time for proper communication. (could表达的语气更委婉）(3)他应该和他的朋友谈谈，这样他才能说对不起。 He should talk to his friend so that he can say he is sorry.(should表达的语气更直接）Unit 4 Why don't you talk to your parents?【语法讲解】表示建议,主要结构有：① Why don’t you/Why not do sth ? 为什么不呢？Why not join us? 为什么不加入到我们当中来呢？② You should应该/ could可以 ... ③ had better (not) do sth最好（不）要做某事。You’d better not go there alone．你最好不要独自去那儿④ How/What about doing sth ?做某事怎么样？ How about going swimming?去游泳怎么样？⑤ Would you mind doing sth.? 你介意做某事吗？⑥ It is helpful/ necessary for sb. to do sth. 对某人来说，做某事是必要的。★如果建议的对象包括自己，还可以用 Shall we... ? 或者 Let’s ...。连词until, so that, although引导的状语从句1）until：引导时间状语从句“直到…时”，not...until，“直到…才…” Don’t get off until the bus stops.2）so that = in order that引导目的状语从句，“为了，以便”3）although=though“尽管，虽然”，引导让步状语从句，不能与but等连用。Unit 5 What were you doing when the rainstorm came?【语法讲解】----过去进行时1. 基本概念：过去进行时表示在过去某一时刻或一段时间内正在进行的动作。标志时间状语: at that time=then;at this time yesterday (morning/afternoon/evening);at eight last night;when...(一般过去时)。2. 结构 was / were ( not ) + 动词-ing3. 过去进行时：当时持续进行的动作，不一定完成，强调过程；一般过去时：发生过的动作或存在的状态，已结束，强调结果。David wrote a letter to his friend last night. 大卫昨晚给他的朋友写了封信。(信写完了。)David was writing a letter to his friend last night. 大卫昨晚一直在给他的朋友写信。(信不一定写完when, while 区别：由when引导的时间状语从句, 动作是短暂性的，从句应用一般过去时，主句用过去进行时； 由while引导的时间状语从句，动作是持续性的，从句应用过去进行时，主句用一般过去时。When the teacher came in, we were talking.= While we were talking, the teacher came in.When (While) we were at school, we went to the library every day. Please don't talk so loud while others are working.when, while ，as区别：2)如果从句和主句的动作同时发生，两句都用过去进行时的时候，多用while引导。如：Tom’s brother was playing the computer games while Tom was studying hard.3)as强调两个动作同时发生，表示“一边……一边……”。Kate listens music as she walks in the park语法归纳练习Unit 1-3 情态动词（一）1．Yuan Longping a famous Chinese scientist, is doing research on sea rice. If farmers __________ start planting rice in salty water, China's food will surely rise.A．can B．can't C．must D．mustn't2．Tom's uncle knows computers well, and he__________ a computer engineer. A．maybe B．may be C．may be is D．may is3．—Excuse me, __________ I take a photo of this beautiful drawing？ —I'm afraid not. There is a sign "No Photos"．A．could B．must C．should D．need4．—Mom, must I do everything as you tell me to? —No, you ________. You can do it in your own way.A．needn't B．mustn't C．can't D．wouldn't5．—Mom, it's too hot. __________ I swim in the lake? —No, you__________. That's too dangerous!A．Should; can't B．Need; mustn't C．Must; needn't D．Could; mustn'tUnit 1-3 情态动词（二）6．— Where is your English teacher? — I'm not sure, he __________ be in the library.A．can B．might C．would D．must7．— Mum, must I finish my homework today? — No, you __________.A．needn't B．mustn't C．can't D．shouldn't8．— Whose book is this? —It__________ be Mike's. Because his name is on the cover of it. A．must B．might C．can't D．would9．In many cities, it is a rule that drivers talk on the phone when driving on the roads. A．need B．must C．needn't D．mustn't10．— Can you come to have dinner with us after school? — I'm afraid not. I __________ look after my grandmother because she is ill. A．have to B．can't C．may D．couldUnit 1-3 情态动词（三）11．—Mum, I caught a big fish. —Great, And you__________ put it in the water. Fish__________ if you__________ put it in the water.A．can, dies, don't B．should, will die, don'tC．should, dies, don't D．must, will die, don't12．—Must I water the flowers now, Mum? —No, you ________. You ________ do it later. A．mustn't; must B．mustn't; may C．needn't; may D．needn't; must13．Could you __________me your dictionary? I want to find the meaning of this new word. A．keep B．lent C．lend D．borrow14．— What are you going to do this weekend, Laura? —I ___________ stay at home, but Tm not sure.A．might B．can C．must D．will15．You __________ put your rubbish in the bin, Joe. A．can B．may C．should D．ought Unit4 连词until/so that/although &Unit5 连词 when/while（一）1．_________she grew older, she became more and more interested in music. A．Though B．Because C．Since D．As2．—How are the children?—They were so tired _________they went to bed as soon as they finished dinner.A．because B．though C．that D．which3．We can't be successful____________ we keep working hard. A．if B．unless C．because D．when4．I'll go to visit my aunt in England__________ the summer holiday starts. A．while B．before C．until D．as soon as5．The rivers will become dirtier and dirtier __________we do something helpful for them. A．because B．if C．until D．unlessUnit4-unit5(二)6．Tom wants to know __________ he needs to come early tomorrow or not.A．whether B．weather C．if D．how7．I was doing my homework __________ the doorbell rang. A．while B．when C．after D．if8．Some people won't realise the importance of their friendship ________ they lose it. A．after B．when C．until D．as9．We must be very careful ________we are doing sports, because sometimes we may hurt ourselves. A．until B．while C．before D．after10．______ it rains heavily yesterday, _______ he still was the first one to get to school. A．Although; but B．Although; / C．/ ; / D．But; /Unit4-unit5(三)11．Matt was doing his homework__________ his mother was doing housework. A．if B．because C．while D．until12．Speak loudly and clearly__________ everyone here can understand you. A．because B．if C．because of D．so that13．My little son _________ go to sleep __________ I tell him a story every night. A．doesn't; if B．won't; if C．doesn't; unless D．won't; unless14．I didn't go to the party not__________ the cold weather but__________ I didn't feel well. A．because of; because B．because; because of C．because; because D．because of; because of15．We'd better arrive earlier the film starts, or we'll miss the beginning. A．before B．as C．when D．afterUnit4-unit5(四)16．—Why didn't you open the door? —Sorry. I was taking photos__________ the bell rang. A．before B．when C．while D．although17．Lisa took a photo of her friends while they __________ games. A．play B．are playing C．played D．were playing18．________ I bought a newspaper, my sister was waiting for the train. A．While B．If C．After D．When19．—When did the classroom have a power cut? —This morning, while we ________ a physics lesson. A．have had B．were having C．are having D．will have20．While my father was reading a newspaper, my mother__________ a soap opera． A．will watch B．was watching C．watches D．is watching建议答案Unit1-3ABAAD BAADA BCCACUnit4-5 DCBDD ABCBB CDDAA BDDBB