2019春八年級(jí)英語(yǔ)下冊(cè) Unit 7 International charities課時(shí)內(nèi)容精講課時(shí)作業(yè) （新版）牛津版.doc

Unit7left的用法Youhavesomepocketmoneyleft.你還剩余一些零花錢。(P92)left是leave的過去分詞,在句中作后置定語(yǔ),修飾pocket money,意為“剩下的,沒有用完的”。此時(shí)left相當(dāng)于一個(gè)形容詞,可放在被修飾的名詞或anything/nothing/nobody等不定代詞之后。例如:I have only one food ticket left.我只剩一張飯票。There is nothing left in the fridge.冰箱里什么也沒留下。further的用法Imtooweaktowalkanyfurther.我太虛弱,走不動(dòng)了。(P92)1.farther和further這兩個(gè)詞都是far的比較級(jí)形式。 farther和further都可指具體的距離,即空間、時(shí)間上的“較遠(yuǎn)”。例如:Lets not go any farther/further.我們不要再走遠(yuǎn)了。2.further還可用于抽象的引申義,如時(shí)間、程度和數(shù)量等,表示“進(jìn)一步,更進(jìn)一層”。此時(shí),不能與farther互換。例如:I may be able to give you some further information about it.我能給你提供關(guān)于這件事進(jìn)一步的信息。The problem will be further discussed at the class meeting.這件事將在班會(huì)上進(jìn)一步討論。prevent的用法Italsoworkstopreventthespreadofsomeseriousdiseases,likeAIDS,amongyoungpeople.它還可以預(yù)防一些嚴(yán)重疾病在年輕人中的擴(kuò)散,如艾滋病。(P93)1.prevent.(from) doing sth,stop.(from) doing sth和keep.from doing sth均表示“阻止做某事”。在主動(dòng)語(yǔ)態(tài)中prevent與stop后可省去from,但在被動(dòng)語(yǔ)態(tài)中不可省略;而keep后的from在任何情況下都不能省略。例如:The heavy rain prevented us going on,but we didnt lose heart.這場(chǎng)大雨阻礙我們前進(jìn),但我們并不灰心。We were prevented by the rain from going there.我們被這場(chǎng)大雨擋住了去那里的道路。2.protect.from/against.意為“保護(hù)免受”。例如:Protect children from violence.保護(hù)孩子免遭暴力。辨析tell,speak,say與talkDrMa,pleasetellussomethingaboutblindness.馬醫(yī)生,請(qǐng)告訴我們一些關(guān)于失明的事。(P94)1.tell常作及物動(dòng)詞,意為“講述,告訴”,其后常接雙賓語(yǔ)。tell sb sth=tell sth to sb。例如:He is telling the children a story.他正在給孩子們講故事。2.speak強(qiáng)調(diào)說的動(dòng)作,不強(qiáng)調(diào)所說的內(nèi)容。作及物動(dòng)詞時(shí),常用某種語(yǔ)言作賓語(yǔ)。作不及物動(dòng)詞時(shí),常見的固定搭配形式:speak of sth/sb“談到某事/某人”,speak to sb“跟某人講話”。此外,speak還可用于指在較為正式的場(chǎng)合中的演講或演說。例如:Can you speak Japanese? 你會(huì)說日語(yǔ)嗎?She is speaking to her teacher.她正在跟她的老師說話。He spoke at the meeting yesterday.他昨天在會(huì)上講了話。3.say一般作及物動(dòng)詞,側(cè)重指說話的內(nèi)容,它的賓語(yǔ)可以是名詞、代詞或賓語(yǔ)從句。例如:He can say his name.他會(huì)說他的名字。Please say it in English.請(qǐng)用英語(yǔ)說。4.talk一般作不及物動(dòng)詞,意為“交談,談話”,著重強(qiáng)調(diào)兩者之間相互說話。例如:She is talking with Lucy in English.她正在和露西用英語(yǔ)交談。What are you talking about? 你們?cè)谡務(wù)撌裁?The teacher is talking to him.老師正在和他談話。percent的用法.andabout80percentofthesecasescanbepreventedorcured.大約80%的這些病例能被預(yù)防或治愈。(P94)“per cent+of+名詞”結(jié)構(gòu)作主語(yǔ)時(shí),謂語(yǔ)動(dòng)詞的數(shù)與其中名詞的數(shù)保持一致。例如:About 30 per cent of the pupils were absent that day.那天大約有30%的學(xué)生未到。About seventy-five per cent of the surface of the Earth is covered by sea.地球表面大約有四分之三都是海。