14．You are going to write a letter to the President of south Africa asking him to free Mandea．
Youare towrite a letter to the president of South Africa tolet Mandelafree．

分析 你將寫一封信給南非總統(tǒng)，讓他釋放 Mandela．

解答 答案：are to，let，free 考查句型轉(zhuǎn)換．be going to do結(jié)構(gòu)表示一般將來(lái)時(shí)態(tài)，可以轉(zhuǎn)換成be to do結(jié)構(gòu)表示一般將來(lái)時(shí)態(tài)．a(chǎn)sk sb．to free sb（此處free是動(dòng)詞）可以轉(zhuǎn)換成let sb．free（此處free是形容詞）．

點(diǎn)評(píng) 同義句型轉(zhuǎn)換，是把意思相同或相近的句子用不同的詞匯、短語(yǔ)及句型表示出來(lái)．同義句的相互轉(zhuǎn)換除了考查主動(dòng)句與被動(dòng)句，復(fù)合句與簡(jiǎn)單句之間的轉(zhuǎn)換，直接引語(yǔ)變間接引語(yǔ)外，還有一些詞或短語(yǔ)的替換，僅僅通過(guò)替換幾個(gè)詞或短語(yǔ)，而使句子意思不變，就能達(dá)到異曲同工之妙．"句型轉(zhuǎn)換"題是用來(lái)考查學(xué)生對(duì)句子結(jié)構(gòu)變化所掌握的程度．

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