1、牛津译林版九年级上册Unit5分层精讲精练【语法专项】（一） 语法考点梳理：原因状语从句1.引导词：原因状语从句通常由because, since, as引导，用来表示原因。He didnt come to school because he was ill.As it is raining, we shall not go the zoo.Since you cant answer the question, Ill ask someone else.2.区分because表示直接原因，语气最强。because引导的原因状语从句多放在主句之后。回答由why提出的问题，只能用because【注
2、意】because和so不能同用在一个句子里。because与because of 的区别:because后只能接句子，而because of 后面只能接名词或名词短语，不能跟句子。Because of the bad weather, we put off the sports meeting.Because it rained yesterday, we put off the sports meeting.as和since语气较弱，一般用来表示明显的原因。由as和since引导的原因状语从句多放在句首。Since he had no musical instruments then,he
3、 made music with common objects like stones and paper.As he likes the sounds of nature,Tan uses them a lot in his music.【拓展】1. since 用于现在完成时,表示“自从”点时间（年份/her fifth birthday) I have lived here since 1999.ago （two years ago/five minutes ago ) I have lived here since two years ago.时间状语从句（一般过去时句子）I have
4、 lived here since I was born.结构:现在完成时+since 2. as用法总结词性用法例句介词翻译成“作为”常用于work as /be famous/known as 等短语中French is known as the most beautiful language in the world. 法语以世界上最美的语言著称。连词引导时间状从句，表示“当的时候” My mother was cooking fish as I arrived home. 当我到家的时候，我妈妈正在做鱼。 连词引导原因状从句，表示“因为.” As rain has fallen, th
5、e air is cooler. 因为下过雨，所以空气比较凉爽。 连词引导让步状从句，表示“虽然.” Young as he is, he has been one of the most famous painters in our country. 虽然他还很年轻，但已经成为我们国家最有名的画家之一。 连词引导方式状语从句，表示“以方式” Do as the Romans do when in Rome.入乡随俗 【as短语必背】as well同样;也such as例如as good as 和.几乎一样；简直是as far as I know 据我所知as soon as 一.就.as w
6、ell as 连同；也；和.一样好as long as 只要as .as possible 尽可能.be famous as 作为.而著名work as 从事.职业as if 似乎；好像（二） 语法考点专项练习（基础练习+中考真题）Part1 基础练习一、单项选择1Im really proud of my group _ we won the match by working together.How important the teamwork is!AbutBsoCbecauseDor2_ we have made the promise, lets keep to it and not
7、 give up easily.AWhetherBUnlessCSinceDThough3_ we are young, we shouldnt be too afraid of making mistakes.AForBBecauseCSinceDBecause of4I dont have to introduce her to you _ you know the girl.AuntilBunlessCsinceDbut5Jessica has visited many famous places _ she came to live in China last year.Abefore
8、BsinceCwhenDfor6 Your English is so good. How long have you learned English?_ I was five years old.ABeforeBUntilCSinceDWhen7Have you been in Nanjing for a long time?Yeah, _ my parents came here.AforBasCwhenDsince8_ time went by, the weather got worse and worse.AWhileBWhenCUnlessDAs9The students sing
9、 _ they walk along the small river.AuntilBasCwhileDunless10_ we got together during the Spring Festival of 2022, three Chinese astronauts were on duty in outer space.ASinceBIfCAsDAlthough11Are you a “Liu Genghongs Girl”? No. Exercising like him is too hard for me, _ it is good for my health.Aeven th
10、oughBso thatCas ifDever since12Youd better fix the machine _ I have told you. Otherwise, you may make more problems.AlikeBwhenCasDfor13_ I know, Mr Smith will come to our school next month.AAs long asBAs soon asCAs far asDAs much as14 Many people are worried about their health because of the COVID-1
11、9.Youd better not go to crowded places _ you can protect yourself.Aas far asBso thatCas soon asDas long as15 Excuse me, Miss Smith, could you tell me how to improve my spoken English? OK. The best way is to practice _.A as soon as possibleBas quickly as possibleCas much as possible D. as many as pos
12、sible 二、完成句子1由于他身体欠佳，我决定独自去那里。_ he was not feeling well, I _ _ go there alone.2我们不能去野餐，因为正在下很大雨。We cant go for a picnic _.3既然汽车坏了，就什么都做不了了。_the car broke down, nothing_.4随着时间的流逝，越来越多的人爱上了网购。_, more and more people _ shopping online.5当他正在读书时，电话铃响了。_ she was reading, the telephone rang。6他搬到这里已经五个月了。It
13、 _ five months since he moved here.7自从上次见到我们的小学同学以来，已经过了三年多的时间了。It has been more than three years _ we last _ our primary school classmates.8因为吃的太多又不运动，他变得越来越胖了。_.9我对阳光镇很了解。四岁时随父母一起搬到了这里。从那以后就住在这里。I know Sunshine Town very well. _. I have lived here since then.10从上个月一起吃饭后我就没见过她。_Part2 中考真题一、单项选择1（20
14、22重庆中考真题）They have been friends _ they first met.AsinceBwhileCbeforeDafter2（2022江苏淮安中考真题）We would like to buy electric cars _ they produce less air pollution.AbecauseBsoCthoughDbut3（2022辽宁沈阳中考真题）I love going to school _ everyone in my class is friendly.AbeforeBalthoughCbecauseDunless4（2022内蒙古包头中考真题）
15、Many wild animals dont have a safe place to live, _ villages and farms are growing bigger and taking away their land.AbecauseBuntilCalthoughDbefore5（2021江苏无锡中考真题）_ weve made the promise, lets keep to it and not give up easily.AWhetherBSinceCThoughDUnless6（2020辽宁大连中考真题） He was so tired that he fell a
16、sleep _he went to bed.Aas ifBeven thoughCever sinceDas soon as7（2022山东青岛中考真题）As a policeman, Toms father is too busy to play with him _ he expects to.Aeven thoughBso thatCas soon asDas long as8（2022安徽中考真题）You wont fully experience the culture of a foreign country _ you go there in person.AbecauseBun
17、lessCas soon asDas long as9（2021辽宁营口中考真题）We can get over the trouble _ we depend on our own country.Aas much asBas far asCas soon asDas long as10（2021湖北襄阳中考真题）When will you go to see your grandpa?Ill see him _ I get off the plane. You know I miss him very much.Aas soon asBas long asCas far asDas eas
18、ily as二、完成句子1（2021湖北荆州中考真题）我还是个孩子的时候就有这些毛绒玩具了。(since)Ive had these soft toys _.2（2020四川乐山中考真题）由于虚拟现实科技，人们不必亲临其境即可游览国内外名胜。_of VR technology, people can _ places of interest both at home and abroad instead of going there in person.3（2021山东滨州中考真题）我们信任他，因为他从未让我们失望过。（let . down）_4.（2021江苏扬州中考真题）Tom买不起那把小
19、提琴，因为太贵了。_5（2021辽宁盘锦中考真题）玛丽（Mary）自从小时候就有这个愿望吗？_参考答案：Part1 基础练习一、 单项选择1-5 CCCCB 6-10 CDDBC 11-15 ACCBC二、完成句子1.As decided to2.because its raining hard3. Since could be done4.As time goes by fall in love with5.When#While#As6.has been7.since saw8.Because he eats too much but doesnt exercise, he gets fat
20、ter and fatter.9.I moved here with my parents when I was four years old10.I have not met her since we had dinner together last month.Part2 中考真题一、单项选择1-5 AACAB 6-10 DABDA二、完成句子1.since I was a child#since I was a kid2.Because visit3.We believe in him because he has never let us down.4.Tom cant afford the violin because its too expensive.5.Has Mary had the wish since she was a kid ?
