Question

Only when the firefighters put off the fire       what great damage it caused.

A．we had realized

B．had we realized

C．we realize

D．did we realize

Answer 1

D

試題分析：句意：當(dāng)消防隊(duì)員撲滅火的時(shí)候我們才意識(shí)到這場(chǎng)大火引起這么大的災(zāi)難。這里是倒裝，only+狀語(yǔ)放在句首時(shí)主句的謂語(yǔ)動(dòng)詞用部分倒裝，，又因?yàn)閺木溆玫氖沁^(guò)去式，故主句用一般過(guò)去式，故選D。
點(diǎn)評(píng)：本題難度適中。倒裝句是高中階段必須掌握的語(yǔ)法項(xiàng)目，它分為部分到裝和全部倒裝，情況復(fù)雜，需要考生熟記它們的用法。
即學(xué)即練: The girl is going to study abroad next month and      when he was young.
A. so her father was             B. so her father did
C. so was her father             D. so did her father
解析：D。句意：這個(gè)女孩下個(gè)月將要去國(guó)外學(xué)習(xí)。當(dāng)他父親年輕時(shí)也是這樣�！皊o+助動(dòng)詞/情態(tài)動(dòng)詞+主語(yǔ)”表示一種情況也適應(yīng)于另外的人。再由句子結(jié)構(gòu)可知，選D。