九年级英语上册第五单元知识点讲解Grammar

九年级英语上册第五单元知识点讲解Art worldGrammar重点单词’1 highly adv.高度地；高地highly作副词，意为“高度地；高地”，常用来修饰形容词或副词。

e.g. She is a highly educated woman.她是个受过高等教育的女人。

拓展highly 作副词时还可表示“非常，极”，其同义词为very；它还可表示“(对某人、某事物)非常赞许地，极为称赞地”，此时它常用于think/speak highly of sb.结构，表示“对某人极为赞赏；对某人评价很高”。

e.g. Her father is a highly successful politician.他爸爸是一位非常成功的政治家。

People all think/speak highly of Mike.人们对迈克的评价都很高。

2 last vi. 持续last作不及物动词，意为“持续”，常与介词for连用，“last for +时间”表示“持续多长时间”。

e.g. How long does the show last?那场演出要持续多久?The hot weather lasted for the whole month of June.炎热的天气在六月份持续了整整一个月。

拓展(1) last的其他用法作限定词最近的；上一个的最后的；最末的e.g.Did you see the game last night?你昨晚看了比赛没有?He was the last one to leave.他是最后一个离开的。

作副词最近；上一次最后；最终e.g. When did you see him last?你最近何时见过他?Who is speaking last? 谁最后一个发言?作名词最后来的人(或发生的事)e.g. They were the last to arrive. 他们是最后到达的人。

(2) lately也为副词，意为“最后一点；最后”，常用来引出所列事情中的最后一项或最后一点，其同义词为finally。

e.g. Lastly，I would like to thank my parents for all their support最后，我想感谢父母对我的全力支持。

重点短语，1 be able to do sth.能够做某事e.g. Ann was worried whether she'd be able to get there on time.安担心她是否能够按时赶到那里。

2 be open to sb.对某人开放e.g. School playgrounds will be open Io the public.学校的操场将对公众开放。

3 out of breath.上气不接下气e.g. I was out of breath after running for the bus.因为追赶公共汽车，我上气不接下气。

4 get bored感到厌烦e.g. After a while 1 got bored and left. 过了一会儿，我感到厌烦，然后就离开了。

要点详解1 Why is Tan able to build a bridge between the East and the West?为什么谭盾能够在东西方之间搭建起一座桥梁?解析able是形容词，意为“能，能够”。

be able to do sth.意为“能够做某事”。

e.g. I was able to skate when I was seven years old.七岁时，我就会滑冰了。

辨析be able to与canbe able to强调在某具体事件中的能力，表示“经过努力而成功地做成某事”，适用于各种时态，且可以和情态动词连用，还可以构成动词不定式。

e.g. Luckily we were able to use the new machine.幸运的是，我们会使用这台新机器。

You must be able to speak French for this job. 干这项工作你得会说法语。

can强调一般性的能力，表示“有能力做某事”，没有人称的变化，且只有现在时和过去时(could)两种形式，没有将来时和完成时。

e.g. I can't help you with your Maths.我不能帮你学数学。

He could read and write when he was five.他五岁时就能读书写字。

2 After a while ，we saw Amy running towards us.过了一会儿，我们看见埃米向我们跑来。

解析作动词，意为“看见”，强调看的结果，其过去式和过去分词分别为saw 和seen。

e.g. I looked at the blackboard carefully but I saw nothing.我仔细看了看黑板但什么都没看见。

He was seen running away from the scene of the crime.有人看见他从犯罪现场跑开。

辨析see sb. doing sth.与see sb. do sth.see sb. doing sth.意为“看见某人正在做某事”，强调看见某动作正在进行。

e.g.I saw you playing soccer when I came to school.当我到校时，我看见你正在踢足球。

(强调动作正在进行)see sb. do sth.意为“看见某人做了某事”，强调看见某动作发生的全过程或经常性的动作。

e.g. I saw you put the key in your pocket. 我看见你把钥匙放进了口袋。

( 强调动作发生的全过程)I often see him play ping-pong.我经常看见他打乒乓球。

(强调经常性的动作)拓展see sb. do sth.结构中的do sth.是省略了to的不定式短语，但在被动语态中，省略的to要还原回去。

与see有类似用法的动词还有watch，hear，notice 等。

e.g. I often see him ask questions after class. = He is often seen to ask questions after class by me.我经常看到他在课后问问题。

3 “I'm late because there was too much traffic ，”she said ，out of breath."我迟到了，因为交通太拥堵了。

”她上气不接下气地说。

解析but of breath意为“上气不接下气”。

其中，breath是名词，意为“呼吸的空气”。

e.g. He was out of breath after only five minutes' walk.走了五分钟后他便上气不接下气了。

We had to stop for breath before we got to the top.我们不得不停下来喘口气，然后再登山顶。

拓展与breath相关的短语short of breath气短fight for breath大口地喘气take a deep breath 深深地吸一口气hold one's breath屏住呼吸catch one's breath缓一口气save one's breath别浪费口舌语法纵横because ，since和as引导的原因状语从句在复合句中，表示主句动作发生原因的从句叫做原因状语从句，常见的用来引导原因状语从句的从属连词有because ，since和as。

1. because引导的原因状语从句because意为“因为”，其引导的原因状语从句一般放在主句之后，用来表示造成某种情况的直接原因，语气最强，常用来回答由why引导的特殊疑问句。

需要注意的是，汉语中习惯说“因为……所...... ，但英语中不能将because与so 一起使用。

e.g. I do it because I like it.我做这件事是因为我喜欢。

——Why didn't you come to my birthday party? 你为什么没来参加我的生日聚会?——Because I was too busy.因为我太忙了。

I watched the movie because I was interested in it. = I was interested in the movie so I watched it.因为感兴趣，所以我看了这部电影。

2. since引导的原因状语从句since意为“既然；由于；因为" ，其引导的原因状语从句一般放在主句之前，用来表示显而易见的理由，较为正式，语气比because弱。

e.g. Since you are free today ，you can go shopping with me.既然今天你有空，你可以跟我去购物。

注意:now (that)也可以表示“既然；由于”，它与since 的意思相近。

Now ( that) you are grown up ，you should not rely on your parents.既然你长大了，你就不应该依靠你的父母了。

3. as引导的原因状语从句as引导原因状语从句时，表示附带说明的双方已知的原因，较为正式，语气比since弱，其在句中的位置较为灵活(常放在主句之前)。

e.g. As you are tired ，you had better have a rest.既然你累了，你最好休息一下。

I went to bed early，as I was exhausted.我睡得早，因为我筋疲力尽了。

课后实践运用高效练习场I单项选择。

( )1.1 saw a wallet on the ground on my way home.A. lieB. layC. lainD. lying( )2. In the future ，we_ fly to the Mars.A. will canB. will be able toC. were going toD. could be able to( )3. Each game an hour.A. lastB. lasts forC. lastingD. lasts to( )4. Mo Yan's books have been sold out in many bookstores his winning of the Nobel Literature Prize.A. becauseB. sinceC. asD. because of语法专练II.用because .since或as填空。