he was about to tell me the secret_____someone patted him on

he was about to tell me the secret_____someone patted him on shoulder

A,as

B,until

C,while

D,when

为什么选D

不选C?

问答/246℃/2024-11-29 15:51:41

优质解答：

因为这是时间点,不是时间段!

when,while这三个词都有"当……时候"之意,但用法有所不同,使用时要特别注意.

①when意为"在……时刻或时期",它可兼指"时间点"与"时间段",所引导的从句的动词既可以是终止性动词,也可是持续性动词.如：

When I got home,he was having supper.我到家时,他正在吃饭.

When I was young,I liked dancing.我年轻时喜欢跳舞.

②while只指"时间段",不指"时间点",从句的动词只限于持续性动词.如：

While I slept,a thief broke in.在我睡觉时,盗贼闯了进来.

这里用when.while指时间段

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