2019春八年级英语下册Unit7Internationalcharities课时内容精讲课时作业(新版)牛津版.docx

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1、1Unit7left 的用法Youhavesomepocketmoneyleft.你还剩余一些零花钱。(P92)left 是 leave 的过去分词,在句中作后置定语,修饰 pocket money,意为“剩下的,没有用完的”。此时 left 相当于一个形容词,可放在被修饰的名词或anything/nothing/nobody 等不定代词之后。例如:I have only one food ticket left.我只剩一张饭票。There is nothing left in the fridge.冰箱里什么也没留下。further 的用法Imtooweaktowalkanyfurther.

2、我太虚弱,走不动了。(P92)1.farther 和 further 这两个词都是 far 的比较级形式。 farther 和 further 都可指具体的距离,即空间、时间上的“较远”。例如:Lets not go any farther/further.我们不要再走远了。2.further 还可用于抽象的引申义,如时间、程度和数量等,表示“进一步,更进一层”。此时,不能与 farther 互换。例如:I may be able to give you some further information about it.我能给你提供关于这件事进一步的信息。The problem will b

3、e further discussed at the class meeting.这件事将在班会上进一步讨论。prevent 的用法Italsoworkstopreventthespreadofsomeseriousdiseases,likeAIDS,amongyoungpeople.它还可以预防一些严重疾病在年轻人中的扩散,如艾滋病。(P93)21.prevent.(from) doing sth,stop.(from) doing sth 和 keep.from doing sth 均表示“阻止做某事”。在主动语态中 prevent 与 stop 后可省去 from,但在被动语态中不可省略

4、而 keep 后的 from 在任何情况下都不能省略。例如:The heavy rain prevented us going on,but we didnt lose heart.这场大雨阻碍我们前进,但我们并不灰心。We were prevented by the rain from going there.我们被这场大雨挡住了去那里的道路。2.protect.from/against.意为“保护免受”。例如:Protect children from violence.保护孩子免遭暴力。辨析 tell,speak,say 与 talkDrMa,pleasetellussomething

5、aboutblindness.马医生,请告诉我们一些关于失明的事。(P94)1.tell 常作及物动词,意为“讲述,告诉”,其后常接双宾语。tell sb sth=tell sth to sb。例如:He is telling the children a story.他正在给孩子们讲故事。2.speak 强调说的动作,不强调所说的内容。作及物动词时,常用某种语言作宾语。作不及物动词时,常见的固定搭配形式:speak of sth/sb“谈到某事/某人”,speak to sb“跟某人讲话”。此外,speak 还可用于指在较为正式的场合中的演讲或演说。例如:Can you speak Japa

6、nese? 你会说日语吗?She is speaking to her teacher.她正在跟她的老师说话。He spoke at the meeting yesterday.他昨天在会上讲了话。3.say 一般作及物动词,侧重指说话的内容,它的宾语可以是名词、代词或宾语从句。例如:He can say his name.他会说他的名字。Please say it in English.请用英语说。4.talk 一般作不及物动词,意为“交谈,谈话”,着重强调两者之间相互说话。例如:She is talking with Lucy in English.她正在和露西用英语交谈。What are

7、 you talking about? 你们在谈论什么?3The teacher is talking to him.老师正在和他谈话。percent 的用法.andabout80percentofthesecasescanbepreventedorcured.大约 80%的这些病例能被预防或治愈。(P94)“per cent+of+名词”结构作主语时,谓语动词的数与其中名词的数保持一致。例如:About 30 per cent of the pupils were absent that day.那天大约有 30%的学生未到。About seventy-five per cent of the surface of the Earth is covered by sea.地球表面大约有四分之三都是海。

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