She always sings in the shower when she feels happy.
她总是在感到快乐时在淋浴时唱歌。
I remember the day when we first met at the park.
我记得我们第一次在公园见面的那天。
Call me when you arrive at the airport, and I'll pick you up.
你到达机场时给我打电话，我会去接你。
She was reading a book when the phone suddenly rang.
她正在看书，电话突然响了。
The weather was perfect when we went hiking last weekend.
上周末我们去徒步时天气非常好。
He always takes a nap when he finishes his lunch.
他总是在吃完午饭后小睡一会儿。
Do you remember when we traveled to Italy together?
你还记得我们一起去意大利的那次旅行吗？
She was surprised when she saw the birthday cake.
她看到生日蛋糕时感到很惊讶。
He was just a child when he learned to play the piano.
他学会弹钢琴时还只是个孩子。
They were having dinner when the power went out.
他们正在吃晚饭，突然停电了。
when it comes to
当提到…时
even when
即使当；甚至当；即使
only when
除非；只有当
as and when
当
if and when
(谈及可能发生或不发生的事时说)如果, 万一
