Unit13 words and expressions课件2022-2023学年人教版英语九年级全册.pptx（纯ppt,可能不含音视频素材）

1、Unit13 Were trying to save the earth.words and expressionsnoise n.噪音噪音 make noises=make a noise 制造噪音If you make noises at night,my dog will bark.辨析noise,sound,voicenoise噪音，喧闹声常指不悦耳、不和谐的嘈杂声Dont make noises!sound 声音，响声泛指自然界的各种声音Light travels much faster than sound.voice嗓音一般指人的声音，如说话声、唱歌声、谈笑声等。有时还指鸟叫声T

2、he girl has a beautiful voice.bottom n.底部，最下部反义词 topat the bottom of.在.的底部litter n.垃圾；废弃物 v.乱扔drop litter 乱扔垃圾 (litter不可数名词)litter指随手丢弃的垃圾（可回收）Please do not drop litter everywhere.rubbish指任何成堆的、破损的、用过的或无用的东西（不可回收）Youd better not throw the rubbish on the ground.waste指任何被丢弃的东西There will be no waste as

3、 long as we have a little creativity.advantage n.优点，有利条件disadvantage 缺点，不利条件the advantage of .的优点take advantage of 利用It has more advantages and disadvantages.advantage 可数名词cost v.花费 n.花费，价钱costcost,cost物作主语某物花费.spendspent,spent人作主语sb.spend time/money on sth.sb.spend time/money doing sth.taketook，tak

4、enit作主语It takes sb.some time to do sth.paypaid,paid人作主语某人为某物花费.the cost of.的费用根据句意用take,spend,pay或cost的适当形式填空。1.That new car _ them lots of money.2.Mona _ 50 yuan on the books just now.3.It usually _ me an hour to do my homework.cost spent takes【运用】4.You should _ some time practising your pronunciat

5、ion.5.My brother _ 6,000 yuan for the new computer yesterday.spendpaidmake a difference 起作用，有影响difference前可用big，great等修饰，表示影响的程度；常与介词to连用有关make的短语make the bed make money make a mistake make a decision make a living make a noise make a telephonecruel adj.残酷的，残忍的be cruel to sb/sth 对某人/某物残忍harmful adj.

6、有害的be harmful to=be bad for 有害的，不利的harmless adj.无害的 harm n.损害，伤害do harm to 对.有害The air pollution is harmful to our health.=The air pollution does harm to our health.afford v.承担得起(后果)；买得起afford to do sth.负担得起做某事afford sth.买得起/承担得起某物afford常与can，could，be able to连用take action 采取行动take action to do sth.采

7、取行动做某事He cant afford to buy a new mobile phone.We must take action to protect the wild animals.过去式过去式为为recycled，过去分词过去分词为为recycled，现在分词现在分词为为 recycling，第三人称单数第三人称单数为为recycles。如：。如：Chemical constantly circulate or recycle in the system.recycle v.回收利用；再利用re-re-是最常用的前缀之一。它可以加在名词或动词前面，构成新的名词或动是最常用的前缀之一。

8、它可以加在名词或动词前面，构成新的名词或动词。词。re-re-表示以下三方面的意义：表示以下三方面的意义：1)表示“回”或“向后”的意思。eg：return（回来）（回来）recall（回忆，召回）（回忆，召回）2)表示“再”、“重新”、“重复”的意思。eg：rethink（再思考）（再思考）reuse（再运用）（再运用）restart（重新开始）（重新开始）recycle（再利（再利用）用）3)表示“相反”、“反对”的意思。eg：rebel（反叛，谋反）（反叛，谋反）reverse（反转，颠倒）（反转，颠倒）resist（反抗，抵抗）（反抗，抵抗）e.g.I never throw anyt

9、hing away.我我从来不扔任何东西。从来不扔任何东西。throw away 扔掉，抛弃错过(机会等)，放过；未能很好利用(机会等)e.g.Dont throw away this opportunity.不要错过这个机会。浪费(时间、金钱等)乱花(钱等)e.g.It will be time and money thrown away.这将是浪费时间和金钱。throw.into.把.扔进.put sth.to good use 好好利用某物=make good use of sth.她奶奶从不扔掉旧衣服，一些旧衣服被很好地利用。Her grandmother never throws a

10、way old clothes.Some old clothes were _.put to good useinspiration n.灵感，鼓舞人心的人(或事物)inspire v.鼓舞be an inspiration to sb.对某人来说是一个鼓舞人心的人；激励着某人The hero is a great inspiration to us youth.1.Were trying to save the earth!我们正在竭尽全力拯救地球我们正在竭尽全力拯救地球!try to do=try ones best to do 努力去做某事努力去做某事e.g.Well try to fi

11、nish the work in a week.我们将努力在一周内完成这项工作。我们将努力在一周内完成这项工作。2.Here are some words related to different kinds of pollution.be related to 与与有关有关 e.g.Is the driver related to the accident?司机和这起事故有关吗？司机和这起事故有关吗？save the earth 拯救地球 noise/land pollution噪声/土地污染 cut down 减少 be good for 对.有益 make a difference 起作

12、用 hear of=hear about 听说 the food chain食物链 turn.into=change.into把.变成 take part in=play a part in参加 pay for付费，付出代价 add up 把.加起来 pull.down=take.down拆下 win/get a prize获奖 bring back 恢复，使想起，归还 in the oceans ecosystem在海洋生态系统中 be made of/from 由.制成 on the top of 在.的顶部/顶端 a number of 许多 the number of.的数量 the

13、sale of.的销售 a most unusual woman一个很不寻常的女性 build.out of.用.建造/制作.help out 帮助（解决困难）(be)in danger 处于危险中 instead of代替，反而 in the last 20 to 30 years 在过去的20至30年里 the advantage/importance of.的优点/重要性 bring danger to.给.带来危险根据句意，用括号中所给词的适当形式填空。1.Hainan is in the _ part of China.(south)2.We all support his _ re

14、search.(science)3.This is an _ animal.We should try to save it.(danger)4.Smoking is _ to your health.You must give it up.(harm)5.Tom is _ in our school.(strong)southernscientificendangeredharmfulthe strongest More and more teenagers have poor eyesight,so parents and teachers should take actions _ th

15、e situation from getting worse.A.stop B.stopping C.stopped D.to stop句意为“越来越多的青少年视力不佳，因此父母和老师们应该采取措施来阻止这种情况加剧。”此题考查不定式作目的状语。中考链接The teenagers clean up the city park every Saturday.Sometimes small things can make a _.A.promise B.conversation C.difference D.discussion中考链接句意为“那些青少年每周六都打扫城市公园。有时候一些小事也会产生

16、（好的）影响。”承诺不同对话讨论中考链接Now waste from daily life in the city of Shanghai _ to be separated into four different groups.A.is requiring B.is required C.was required D.required句意为“现在上海市日常生活垃圾要求分为四类。”根据句意可知，垃圾被要求进行分类，要使用被动语态；由now“现在”可知，要选择一般现在时的被动语态。中考链接 Lets divide the rubbish into different kinds before t

17、hrowing it away.OK.Its _ us to use some of it again.A.thankful to B.good for C.similar to D.painful for 句意为“让我们在扔垃圾之前先进行分类。好的，这对我们再次使用某些东西有好处。”对感恩对有好处和相似为痛苦I like novels written by J.K.Rowling.So far I _ all her works about Harry Potter.A.have read B.read C.am reading中考链接句意为“我喜欢 J.K.罗琳写得小说。到目前为止，我已经拜读过她所有关于哈利波特的作品。”so far，意为“到目前为止”，句子要用现在完成时。