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嘆句形式。句式特征為:what/ how … it is (that) +主語+謂語!14.— It was ___________ who helped us out of danger.— What brave and helpful children! We should learn from them.A.theyB.themC.theirD.theirs【答案】 A 【解析】【分析】根據題干,這是一個強調句,強調主語! 英語中為了表達的正式,這時應用主格的代詞。本句的意思是“就是他幫我們脫離的危險?!彼员绢}選A?!军c評】對于強調句中強調主語時應注意,如果不加分析可能會選擇them。這在平時的學習中一定要注意分析。15.The journey to America was very important to him because it was that journey changed his attitudes towards English study. A.of whichB.to whichC.thatD.through which【答案】 C 【解析】【分析】句意:美國之行對他來說很重要,因為是那次旅行改變了他對英語學習的態(tài)度。此句是強調句型,故選C。【點評】考查強調句型,掌握強調句型的結構。16.It was as a result of his carelessness _______ a serious fire broke out during the night. A.whenB.thatC.beforeD.since【答案】 B 【解析】【分析】句意:那晚突發(fā)大火是他疏忽的結果。通過分析句子成分可知,It is...that...是強調句式,其中as a result of his carelessness在句中作原因狀語,主句是a serious fire broke out during the night ,符合強調句結構。故選B。 【點評】考查強調句式,掌握其結構“It is...that...”。17.It is not until all the fish died in the river ________how serious the pollution was. A.did the villagers realizeB.that the villagers realizedC.the villagers did realizeD.didn39。t the villagers realize【答案】 B 【解析】【分析】句意:直到河里的魚都死光了,村民們才意識到污染是多么嚴重。此處是It is not until ...that...,的強調句型,故答案為B?!军c評】考查強調句型,本題涉及It is not until ...that...的應用。18.______ he will return to his native land. A.It is long before thatB.It will be long before thatC.It won39。t be long beforeD.It is before long that【答案】 D 【解析】【分析】句意:不就以后他就會回到他的祖國了。本題強調的是時間狀語before long不久以后;強調句型的基本結構為It is/was被強調成分that/who其它成分;其最大的特點就是去掉it is/was…that/who…句子仍然成立。要注意強調句型能強調除謂語動詞以為的所有的句子成分。在考查的時候,經常會把強調句型和定語從句結合在一起考查,要注意分析句子的成分。故D正確?!军c評】考查強調句型,掌握其結構:it is/was…that/who…。19.It is water, which seems so simple and mon, ________ makes it possible for all living beings on this planet to survive and develop. A.whenB.whichC.thatD.where【答案】C 【解析】【分析】句意