Unit 4 Our World词句精讲精练【词汇精讲】1. share（1）share用作及物动词，意为“共用；合用；分享”例如：It’s hard to share power. 权力很难分享2）share sth. with sb.意为“与某人分享某物”例如：Tony shared his chocolate with other kids.托尼把他的巧克力与其他孩子分着吃了She shares a house with two other students.她与另外两个同学合住一所房子2. feed feed作动词，意为“喂养，饲养”常用如下搭配：（1）feed…to…中的feed是及物动词，其后接饲料或食物名词作宾语，to为介词，其后一般接动物或小孩等名词表示对象，意为“把……喂给……吃”例如：Please feed some grass to the cow. 请给牛喂点草She has fed milk to the baby. 她已给婴儿喂过奶2）feed…on…中的feed也是及物动词,其后接人或动物名词作宾语, on后接食物或饲料名词,意为“用……喂……”on与with 可替换。
例如：The child was feeding the monkey on/with a banana.那孩子正用香蕉喂猴子3. thousandthousand是数词，意为“千”，当表示具体的“几千”时，用“基数词 + thousand”，注意不加-s例如： There are nine thousand students in our school. 我们学校有9000名学生拓展】（1）thousands of 表示“数千，成千上万的”，这时thousand后要加-s，且后面有介词of，但是不能与数词连用例如：There are thousands of people in the street. 在街上有成千上万的人2）表示数词的还有hundred“百”，million“百万”，billion“十亿”它们的用法和thousand一样，可以用来表示约数和确数例如：More than nine hundred people have died in the fighting.900多人在这场战斗中丧生The programme was viewed on television in millions of homes. 无数家庭通过电视收看了这个节目。
4. find out find out意为“找到，发现，查明”，多指通过调查、询问、打听、研究之后“弄明白”通常含有“经过困难、曲折”之后才找出难以找到的东西例如： Please find out when the train leaves. 请查一下火车什么时候离站拓展】 （1）find是动词，意为“找到”，通常指找到或发现具体的东西，强调的是找的结果例如： He didn’t find his book. 他没有找到他的书 （2）look for意为“寻找”，是有目的地找，强调找的动作例如： Jim is looking for his little dog. 吉姆正在找他的狗5. protectprotect为及物动词，意为“保护”常用搭配protect sb./sth. from…，意为“保护某人/某物免受……伤害”例如：We should protect rare animals.我们应该保护珍稀动物Parents protect their young children from danger. 父母保护他们的孩子不受伤害。
6. look uplook up 意为“（在词典或参考书中）查阅，检查”，其后跟名词作宾语，名词可放在look和up之间，也可放在look up 之后；如果代词作宾语，则只能放在look和up之间例如：Look up the word in the book, and you will know its meaning.在书中查查这个词，你就知道它的意思了Please look them up in the dictionary carefully. 请仔细在词典中查一下它们 7. missing missing是形容词，意为“找不到的，失踪的”例如： They still hoped to find their missing son. 他们依然希望找到他们失踪的儿子拓展】辨析 missing ; lost ; gone missing意为“失踪的，找不到的”，强调某人或某物不在原处lost意为“丢失的，迷路的，输掉了的”gone意为“离开的，过去的，不复存在的”，不做定语例如：I never found the missing letter.我一直没有找到丢失的那封信。
Don’t go too far away, or you’ll get lost.不要走得太远，否则你会迷路的Now it was gone, as though it had never been.现在它已逝去，仿佛它从未存在过8. talk about sth. talk是不及物动词，意为“谈话，讲话”常用短语：talk about sb. / sth. 谈论某人/某事；talk to sb. 和某人谈论；talk with sb. 和某人交谈例如：They are talking about a movie. 他们在谈论一部电影 Don’t talk to me while I’m studying. 在我学习时不要和我说话I’ll need to talk with you, but there’s no hurry. 我得和你谈谈，但不着急9. in dangerin danger 意为“处于危险中”danger是名词，意为“危险”，danger的反义词是safety，意为“安全”dangerous是形容词，意为“危险的”，常放在be动词后面作表语dangerous的反义词是safe，意为“安全的”。
例如：We must help the animals in danger. 我们必须帮助处于危险中的动物 It’s dangerous here，please take the boy to the safety. 这危险，请把男孩带到安全的地方去10. run out of run out of 意为“用完”，主语只能是人例如：He has run out of red ink. 他的红墨水用完了 We run out of coal, and had to burn wood. 我们的煤用完了，所以不得不烧柴 【拓展】run out of和run out的辨析：run out和run out of 这两个短语都有“用完”的意思，但用法不同run out作不及物动词短语，表示“被用完；被耗尽”，其主语通常是时间、金钱、食物等无生命的名词而run out of则是及物动词短语，表示主动例如：His strength ran out. 他的力气用完了11. pay attention to pay attention to表示“注意；留心；专心”，该短语中to是介词，后面可以接名词、代词、动名词或宾语从句。
例如： Don’t pay any attention to Nina— she doesn’t know what she’s talking about. 别理睬Nina——她根本不知道自己在说什么You must pay attention to the problems of spelling in your writing.你必须注意你写作中的拼写问题You should pay more attention to observing.你应该多注意观察12. die outdie out 意为“灭绝”，是固定短语例如： This species has nearly died out because their habitat is being destroyed.因栖息地正遭受破坏，这一物种已几乎灭绝拓展】 die是不及物动词，意为“死”其现在分词是dying；过去式和过去分词为died；其名词为death；形容词为dead例如： His grandpa died three years ago. 他的祖父三年前死了His grandpa’s death made him very sad.他祖父的死使他很伤心。
The old man has been dead for many years.这位老人已经去世多年了注意】（1）die是非延续动词，不能与表示一段时间的短语连用，应用be dead 来代替2）dying 是形容词，意为“临终的；垂死的”，用来做定语，修饰名词例如：dying wishes临终遗愿13. land land作名词，意为“陆地”例如：Most mammals live on land. 大多数哺乳动物生活在陆地上拓展】land作不及物动词，意为“着陆”例如：—When are we landing? 我们什么时候着陆？—In a few minutes. 等几分钟就着陆了14. whole & all whole和all都可作形容词，都有“整个的，完全的”之意，但用法不同 （1）whole表示“全部的，全体的”，用法如下： 1) 用在表示整体的单数名词前：限定词 + whole + 单数名词例如：the whole year 全年 2) 可接复数名词：限定词+ whole + of + 复数名词例如：the whole of students 全体学生 3) whole不能修饰不可数名词或物质名词，不能说the whole water。
（2）all表示“全，都”，主要用法如下：1) 用在表示整体的单数名词前，all + 限定词 + 单数名词例如：all the year 一整年2) 可接复数名词，all + 限定词 + 复数名词例如：all the students 全体学生3) all 能用于各种情况例如：all the water所有的水【注意】 当whole和all与复数名词连用时，whole强调“完整的；整体的”，而all强调“所有的”例如：It snowed for fifteen whole days this January. 今年一月整整下了十五天雪I’m glad that all my friends can come to my birthday party. 我很高兴，所有的朋友都能来参加我的生日聚会词汇精练】I. 根据句意及首字母提示补全单词1. People can enjoy n_______ in the countryside. The air is fresher and the sky is bluer there.2. She c_______ the table with a cloth yesterday.3. In the o_______, there are all kinds of fishes.4. Thousands of old trees were in the f_______ ten years ago, but now there are few.5. She began to draw on the paper, after a while, a beautiful cat a_______.6. We s here and there, but could not find her.7. She probably knew that I wasn’t telling her the w story.8. The security forces have started searching for the m men.II.根据句意及汉语提示填空。
1. These plants float on the _______ (表面) of the water.2. My grandparents keep a lot of _______ (绵羊) in the countryside.3. The fox usually _______ (以……为食) meat.4. The teacher had no _______ (控制) over the children.5. The rivers in the countryside are much _______(清澈的) than those in the cities. 6. He sets an _______ (榜样) to the other students.7. They could learn English well in such a bad _______ (情况).8. Robots can _______ (修理) machines easily.9. I am quite sleepy. Don’t _______ (叫醒) me up until 8 o’clock tomorrow morning.10. Mr. Wang advised us to use an English-English _______ (字典).11.The school promised rapid (结果) in the learning of languages. 12. We take care of animals and plants. In fact we ___________ (保护) ourselves.III. 根据句意，用方框中所给词的适当形式填空。
danger, sheep, make, France, science1. A lot of _______ are eating grass by the river.2. Lin Tao can speak Chinese and _______.3. The traffic here is very busy and it’s _______ for children to walk alone.4. What’s this building _______ of ?5. Mrs. Green is a famous _______. She invented many useful things.IV. 综合填空用所给词的适当形式填空，其中有两项多余feed, fresh, rubber, small, on, control, meatThere are a lot of trees around us. The trees can help to make the air 1 and cleaner. They can also help to 2 the weather. They provide(提供) humans with food， 3 ， medicine and other things. Because of the trees, many animals can live 4 the earth. But people often cut trees down in large numbers. The forests are becoming much 5 than before, so we should protect them well.1._______ 2._______ 3._______ 4._______ 5._______【参考答案】I.根据句意及首字母提示补全单词。
1. nature 2. covered 3. ocean 4. forest 5. appeared 6. searched 7. whole 8.missingII.根据句意及汉语提示填空1. surface 2. sheep 3. feeds on 4. control 5. clearer6. example 7. situation 8. mend/repair 9. wake 10. dictionary11. results 12. are protectingIII. 用方框中所给词的适当形式填空，其中有两项多余1. sheep 2. French 3. dangerous 4. made 5. scientistIV. 综合填空用所给词的适当形式填空，其中有两项多余1. fresher 2. control 3. rubber 4. on 5. smaller9。