Question

Two years ago I broke my arm ____ football.

A．when playing

B．while played

C．played

D．having played

Answer 1

A

試題分析：整個(gè)句子已經(jīng)有謂語(yǔ)動(dòng)詞broke，再出現(xiàn)謂語(yǔ)動(dòng)詞必須用連詞，when 后的句子補(bǔ)充完整應(yīng)是：when I was playing；因?yàn)镮與play是主動(dòng)關(guān)系，所以排除B，故選A。
點(diǎn)評(píng)：本題難度適中。為了使話說(shuō)得簡(jiǎn)明扼要，英語(yǔ)句子中某個(gè)單詞、短語(yǔ)甚至從句或主句都可以省去。這種省去句子某些成分而保持句子意思不變的現(xiàn)象，稱為省略。它是高中階段的重要的語(yǔ)法項(xiàng)目，需要考生仔細(xì)分析句子結(jié)構(gòu)，來(lái)確定省略的內(nèi)容。
即學(xué)即練：____ breakfast, he heard the doorbell ring.
A. When eat    B. While eating C. Eat     D. Having eaten
解析：B。句意：當(dāng)他吃早飯時(shí)，他聽見了門鈴響。