过去进行时

旁白 neutral

I was reading a book when she called

当她打电话时，我正在读书。

旁白 neutral

They were playing football in the park at that time

那时他们正在公园里踢足球。

旁白 neutral

She was singing a beautiful song while he was painting

当他在画画时，她正在唱一首优美的歌。

旁白 neutral

We were having a picnic when it started to rain

当开始下雨时，我们正在野餐。

旁白 neutral

The children were watching TV when their parents came home

当他们的父母回家时，孩子们正在看电视。

旁白 neutral

He was writing a letter when the phone rang

当电话铃响时，他正在写信。

旁白 neutral

She was cooking dinner when her friends arrived

当她的朋友到达时，她正在做晚餐。

旁白 neutral

They were dancing at the party when midnight struck

当午夜钟声敲响时，他们正在派对上跳舞。

旁白 neutral

He was repairing his bike when his neighbor asked for help

当他的邻居请求帮助时，他正在修理他的自行车。

旁白 neutral

They were building a sandcastle on the beach when the tide came in

当潮水上涨时，他们正在沙滩上建造沙堡。