帮忙翻译几个时间状语从句
一、用when（强调时间点上发生的事情）或while（强调某个时间段上发生的事情）连接从句
1、当我正在购物时，一个飞碟降落了。
2、当飞碟降落时，我正在购物。
3、当我正在来这时，他找到了他的狗。
4、当电话响了的时候，他跑出了教室。
二、用before（在…之前）连接从句
5、在我妈妈回来之前，我就已经完成家庭作业了。
6、在你离开之前，请完成你的家庭作业。
7、在他买这本书之前，我就已经读过这本书了。
三、用after（在…之后）连接从句
8、她喝了杯茶之后，便去做了作业。
9、在他完成作业后，他才回家。
10、在你完成家庭作业后，才可以回家。
四、用as soon as或the moment（一…就…）连接从句。
11、她一回来我就会把这件事告诉她。
12、我一有钱我就把钱还给他了。
13、他一回来你就会见到他。
五、用as（当…的时候）连接从句
14、当我正要离开时我妈妈回来了。
15、当我正要洗澡时，电话铃响了。
1.When I was shopping, a flying saucer had landed.
2,The UFO landed while I was shopping.
3.When I was coming , he found his dog.
4.When the phone rang, he ran out of the classroom.
5.Before my mother came back, I had already completed my homework.
6.Before you leave, please complete your homework.
7.I had already read this book before he bought it.
8.After she drank a cup of tea, she got down to her homework.
9.He returned home after finishing the homework.
10.After you finish homework you can go home.
11.As soon as she came back I would tell her this matter.
12.The moment I had money I paid him.
13.You will see him as soon as he came back.
14.As I was about to leave my mom came back.
15.As I was going to have a bath the phone rang.