It was in 1990 ______ the medicine was tested on human patients.
A.sinceB.thatC.beforeD.when
B

試題分析:考查強(qiáng)調(diào)句型。強(qiáng)調(diào)句型的基本結(jié)構(gòu)為It is/was被強(qiáng)調(diào)成分that/who其它成分;其最大的特點(diǎn)就是去掉it is/was…that/who…句子仍然成立。要注意強(qiáng)調(diào)句型能強(qiáng)調(diào)除謂語(yǔ)動(dòng)詞以為的所有的句子成分。本題中強(qiáng)調(diào)的是時(shí)間狀語(yǔ)in 1990;句意:就是在1990年這種藥物在人類(lèi)的病人身上測(cè)試的。故B正確。
點(diǎn)評(píng):能夠準(zhǔn)確把握句子結(jié)構(gòu)是關(guān)鍵。隨著高考考點(diǎn)的不斷深入變化,該句型總是以新的面孔出現(xiàn),或本身發(fā)生變化,或與其他句式結(jié)構(gòu)相結(jié)合,然而萬(wàn)變不離其宗,總是脫不掉it,be,that/who這一框架結(jié)構(gòu)。結(jié)合近幾年有關(guān)高考題的特點(diǎn),將其變化形式歸納如下:強(qiáng)調(diào)句型的一般疑問(wèn)句形式。一. 句式特征:Is/ Was it +被強(qiáng)調(diào)部分+ that…;二、 結(jié)合特殊疑問(wèn)詞構(gòu)成特殊疑問(wèn)句形式。句式特征:特殊疑問(wèn)詞+is/was it that…?三、強(qiáng)調(diào)句型的反意疑問(wèn)句形式。句式特征為:It is/was+被強(qiáng)調(diào)部分+that…,isn’t / wasn’t it?四、強(qiáng)調(diào)句型的感嘆句形式。句式特征為:what/ how … it is (that) +主語(yǔ)+謂語(yǔ)!
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