Question

2、英语：先把句子补充完整然后再翻译出来，谢谢，一定采纳~~

Answer 1

（2）
By the time I put cream in the coffee , the coffee had become cold.
中文翻译：当我把奶油 放入咖啡中的时候，咖啡已经变冷了.
The coffee had become cold before I put cream in the coffee.
中文翻译：在我把奶油 放入咖啡之前，咖啡已经变冷了.

（3）
By the time I got to school , the teacher had collected the math homework.
中文翻译：当我到达学校的时候，老师已经收了数学家庭作业.
The teacher had collected the match homework before I got to school .
中文翻译：在我到达学校的之前，老师已经收了数学家庭作业.

（4）I had completed the work for my boss befor the workday ended.
中文翻译：工作时间还没有结束，我就帮我的老板完成了工作.

（5）The movie had started before I arrived at the cinema .
中文翻译：在我没有到达电影之前，电影就已经开始了..

（6） My mother had finished making the apple pie before I got home from my language course.
中文翻译：在我还没有从我的语言课程回家之前，妈妈就已经把苹果馅做好了..

满意，请采纳，谢谢！