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題4：Was it five o’clock ______the fire broke out?
A. when B. that
C. which D. in which
【陷阱】容易誤選B，誤認(rèn)為這是強(qiáng)調(diào)句。
【分析】其實(shí)，此題應(yīng)選A，這不是強(qiáng)調(diào)句。因?yàn)樵趶?qiáng)調(diào)句中，若去掉強(qiáng)調(diào)句的結(jié)構(gòu)詞 it is [was]…that…，句子結(jié)構(gòu)仍然完整，但此句不是這樣，若去掉結(jié)構(gòu)詞，即為 Five o’clock the fire broke out，句子不完整，但若在five o’clock前加上介詞at則可以，因?yàn)?/FONT> at five o’clock 用作時(shí)間狀語(yǔ)。此題選A可分析為：it 表時(shí)間，when the fire broke out 為時(shí)間狀語(yǔ)從句，全句意為“火災(zāi)是5點(diǎn)鐘發(fā)生的嗎?”比較下面一題（答案選B，為強(qiáng)調(diào)句）：
Was it at five o’clock ______the fire broke out?
A. when B. that
C. which D. in which
題5：It’s more than half a century _____ my grandfather joined the Party and became a servant to the people.
A. when B. that
C. since D. while
【陷阱】容易誤選B，認(rèn)為這是強(qiáng)調(diào)句型。
【分析】假若選B，將此句分析為強(qiáng)調(diào)句，那么若將此句還原為非強(qiáng)調(diào)句就應(yīng)該是My grandfather joined the Party and became a servant to the people more than half a century. 很顯然, 句中的 more than half a century 是一段時(shí)間，然而它修飾的謂語(yǔ)動(dòng)詞 joined…became 卻是兩個(gè)終止性動(dòng)詞，這顯然不合適。其實(shí)，此題應(yīng)選C，屬于“It is＋一段時(shí)間＋since 從句”句型，句意為“我爺爺加入黨組織成為人民的公仆已有半個(gè)多世紀(jì)了”。此句的主句謂語(yǔ)也可以用現(xiàn)在完成時(shí)態(tài)(has been)，但在口語(yǔ)中多用一般現(xiàn)在時(shí)代替。
題6：It was lack of money, not of effort, _____ defeated their plan.
A. which B. as
C. that D. what
【陷阱】容易誤選A，受空格前逗號(hào)的影響，誤認(rèn)為這是一個(gè)非限制性定語(yǔ)從句，從而誤選了A。
【分析】其實(shí)，此題最佳答案為C，整個(gè)句子為強(qiáng)調(diào)句，被強(qiáng)調(diào)成分為 lack of money, not of effort。由于句中插入 not of effort 這一結(jié)構(gòu)，干擾了許多同學(xué)對(duì) it was lack of money that defeated their plan 這一強(qiáng)調(diào)句的認(rèn)識(shí)和理解。
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