課本中不會教你的[A]81　at+名詞或on+動名詞→as soon as/when+句子

81　at+名詞或on+動名詞→as soon as/when+句子

◎ 這兩種結構可以轉換，但要注意as soon as 后的句子時態(tài)。

比較

At the news，she burst out laughing. 她一聽到那個消息就大笑起來。

As soon as she heard the news，she burst out laughing.

他一到達車站就直接進了候車室。

On arriving at the station，he went directly into the waiting room.

As soon as/when he arrived at the station，he went directly into the waiting room.