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托福寫(xiě)作回憶和解析含范文   本文由培頓 教育成都學(xué)校李丹老師整理提供，供大家參考學(xué)習(xí)！本次托?？荚噷?xiě)作綜合點(diǎn)評(píng)：這次托?？荚噷?xiě)作部分整體難度適中。其中，綜合寫(xiě)作考查環(huán)境類(lèi)，整體難度適中，除了部分環(huán)境類(lèi)的專(zhuān)業(yè)詞匯。獨(dú)立寫(xiě)作考查教育類(lèi)話(huà)題，難度適中，類(lèi)似2019/6/29考題，學(xué)生在備考過(guò)程中如果熟悉有關(guān)教育類(lèi)素材應(yīng)該問(wèn)題不大。

　　本文帶來(lái)綜合寫(xiě)作分析：

　　綜合寫(xiě)作

　　話(huà)題分類(lèi)環(huán)境類(lèi)

　　考題回憶總論點(diǎn)三種alternative methods去代替fossil fuel，來(lái)解決global warming

　　閱讀部分現(xiàn)在汽車(chē)使用化石燃料會(huì)釋放二氧化碳carbon dioxide，是造成全球變暖global warming的主要原因，提出了三種alternative methods去代替fossil fuel：

　　分論點(diǎn)一： 氫能源hydrogen energy。氫能源是有氫hydrogen和氧oxygen產(chǎn)生的，不會(huì)排放二氧化碳carbon dioxide，只會(huì)排放水；

　　分論點(diǎn)二：生物燃料bio-fuel。生物燃料是從植物中提取的（extracted from），提取過(guò)程中是釋放release二氧化碳，但是，植物生長(zhǎng)過(guò)程中是會(huì)吸收absorb二氧化碳的，所以吸收的二氧化碳是可以抵消釋放出的二氧化碳的 ；

　　分論點(diǎn)三：從空氣中提取二氧化碳轉(zhuǎn)化convert成替代合成燃料。這樣即便燃料使用過(guò)程中排放二氧化碳，也只是一種二氧化碳的循環(huán)，不會(huì)真正增加空氣中二氧化碳含量。

　　聽(tīng)力部分認(rèn)為這三種alternative methods都not practical或有drawbacks：

　　分論點(diǎn)一：氫燃料確實(shí)不會(huì)釋放二氧化碳，但是生產(chǎn)加工出氫燃料的過(guò)程是需要燃燒傳統(tǒng)的含碳的fossil fuel的，比如需要使用天然氣，而用天然氣去生產(chǎn)氫燃料仍然會(huì)釋放大量的二氧化碳，所以global warming并不會(huì)得到緩解；

　　分論點(diǎn)二：生物燃料無(wú)法去replace化石燃料。因?yàn)橐a(chǎn)bio-fuel，那就需要種植大量的植物，需要有足夠的land。例如，在美國(guó)生產(chǎn)bio-fuel的話(huà)，需要用掉兩百萬(wàn)平方公里的土地來(lái)生產(chǎn)玉米和甘蔗corn and sugar cane，這個(gè)面積相當(dāng)于美國(guó)現(xiàn)在農(nóng)業(yè)用地的兩倍。然而實(shí)際上，并沒(méi)有那么多土地去種植；

　　分論點(diǎn)三：從空氣中提取燃料，在目前來(lái)看并不實(shí)際not practical?，F(xiàn)在的科學(xué)技術(shù)還無(wú)法實(shí)現(xiàn)將大量二氧化碳轉(zhuǎn)化成大量燃料來(lái)滿(mǎn)足現(xiàn)在人們對(duì)燃料的需求。

　　解題思路傳統(tǒng)四段式寫(xiě)作，每一段閱讀內(nèi)容+聽(tīng)力內(nèi)容，注意細(xì)節(jié)和同義替換

　　參考范文The reading passage claim that nowadays since the increasing use of automobiles, the discharge of carbon dioxide is the main reason for global warming. In order to reduce the use of fossil fuels, the writer offers three solutions to replace its use. The listening material, however, points out that these methods are not practical.

　　First of all, the reading passage suggests to use hydrogen energy, which is composed of hydrogen and oxygen so it cannot release carbon dioxide except for water. However, the listening argues that the production of hydrogen energy needs to burn fossil fuels, such as natural gas. The whole process will still produce carbon dioxide and so cannot help alleviate global warming.

　　Secondly, the article says that bio-fuel is another effective way, which is extracted from plants. Although this process may release carbon dioxide, the growth of plants can absorb these CO2. The lecturer, however, rebuts it by pointing out that in order to produce bio-fuel, a large number of plants need to be cultivated, but the truth is that there are not enough lands. He takes America as an example. To produce bio-fuel, two million square kilometres of lands need to be used to plant corn and sugar cane, which almost double the agricultural lands in the US.

　　Finally, the author advises to convert CO2 in the air into another synthetic fuel, by which he means that although it still could release CO2, this process is only a recycle of CO2 and no more CO2 can be produced. In contrast, the lecturer’ position is that because the technologies at present cannot convert such a large amount of CO2 into fuels to meet people’s demand, this method is not practical at all.

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