Только не через переводчик.

1.He thought before to answer

2. I Have finished, saying that I will return soon

3.I started to write a lot in order to boost up orphography

4.He came with the first train while he received a letter from brother

5.He found a lot of interesting issues while reading this book

6.He waited for several seconds before answering

7.He returned to his own room after having a breakfast

8.He put the newspaper on the table while didn't look to his wife