机密卷宗 #404 · 失踪的钻石

正： She immediately found out that the diamond was missing.

误： She was finding out that the diamond was missing.（把「获知结果」写成了拖长动作）

正： On the way, she came across a half-open toolbox.

误： She was coming across a toolbox.（偶遇为短促结果，不用进行体）

I suddenly realized I was on the wrong bus.（顿悟，一点即明）

Did you notice the sign on the wall?（注意到，瞬间完成）

They discovered a secret door behind the bookshelf.（发现结果）

We heard someone shout “Help!” from the river.（听见呼喊，常作点事件）

She saw a dog rush into the street.（看见突发动作）

可与 was listening / was looking 对照：听/看的过程用进行，听到/看到结果多用过去式。

The lights suddenly went out while we were discussing the plan.

The alarm rang twice while she was updating the log.

The rain stopped just as we were packing up the tent.（雨停，状态突变）

The film started while many people were still finding their seats.

We learned the news the next day.（得知结果，不宜 *was learning the news* 表「获知」）

She recognized his voice at once.（认出，瞬间完成）

A visitor spotted a crack in the glass case.（瞥见、发现，点事件）

The team arrived while volunteers were setting up chairs.（到场落点常用过去式）

He entered the hall and waved to the crowd.（进入，短动作）

She reached the top step and paused.（到达某处，常作一点）

对照：was arriving 多强调「在途中」，写到「已经到了」叙述落点仍常用 arrived。

Something strange happened while everyone was sleeping.

An argument suddenly broke out near the exit.

Someone turned off the main switch; the hall went dark.（关掉，一下完成）

He jumped up when he heard his name called.（惊跳、站起，点动作）

A book fell off the shelf while she was dusting it.

She nodded and turned away.（点头、转身，叙述里常作相继短动词）