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

A．why              B．where            C．when             D．while

 

【答案】

C

【解析】

試題分析：考查when引導(dǎo)的時間狀語從句，when可以表示“當(dāng)…時候”，也可以表示 “這時”，相當(dāng)于at that time，句意：他剛吃完一半的飯這時聽到一個熟悉的聲音。選C。

考點：考查when引導(dǎo)的時間狀語從句

點評：when引導(dǎo)時間狀語從句時表示“當(dāng)……的時候”， when既可以指時間段也可指時間點， 從句中既可用延續(xù)性動詞又可用非延續(xù)性動詞， 且動作既可和主句的動作同時發(fā)生又可在主句的動作之前或之后發(fā)生，when也可以表示 “這時”，相當(dāng)于at that time，適用于：be about to do… when…,be doing…when…,had done…when…。

 

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