Question

He was about half through his meal ______ a familiar voice came to his ears.

A．why

B．where

C．when

D．while

Answer 1

C

試題分析：考查when引導(dǎo)的時(shí)間狀語(yǔ)從句，when可以表示“當(dāng)…時(shí)候”，也可以表示 “這時(shí)”，相當(dāng)于at that time，句意：他剛吃完一半的飯這時(shí)聽(tīng)到一個(gè)熟悉的聲音。選C。
點(diǎn)評(píng)：when引導(dǎo)時(shí)間狀語(yǔ)從句時(shí)表示“當(dāng)……的時(shí)候”， when既可以指時(shí)間段也可指時(shí)間點(diǎn)， 從句中既可用延續(xù)性動(dòng)詞又可用非延續(xù)性動(dòng)詞， 且動(dòng)作既可和主句的動(dòng)作同時(shí)發(fā)生又可在主句的動(dòng)作之前或之后發(fā)生，when也可以表示 “這時(shí)”，相當(dāng)于at that time，適用于：be about to do… when…,be doing…when…,had done…when…。