1. Word order is inverted only in certain cases.
=> Only in certain cases is word order inverted.
2. Experiments in communal living in the U.S. have rarely lasted for a long time.
=> Rarely have experiments in communal living in the U.S. lasted for a long time.
3. He did not stop crying until his mother came to comfort him.
=> Not until did his mother come to comfort him, he stopped crying.
4. She will not leave on any account.
=> On no account will she leave.
5. They could not find the lost bracelet anywhere.
=> Nowhere could they not find the lost bracelet.
6. Snow seldom falls in the southern states.
=> Seldom does snow fall in the southern states.
7. He can only achieve his goal by hard work.
=> Only by hard work can he achieve his goal.
8. I did not realize the seriousness of the problem before I talked with her.
=> Only after I talked with her, did I realize the seriousness of the problem.
9. As soon as he had heard the news, he telephoned us.
=> No sooner had he heard the news than he telephoned us.
10. The new President had just taken office when violence erupted.
=> Hardly had the new President taken office when violence erupted.
11. John not only works hard, but also has good luck.
=> Not only does John work hard, but also has good luck.
12. The machine was not only expensive, but difficult to use as well.
=> Not only was the machine expensive, but difficult to use as well.
13. He goes to school full-time during the day and has a part-time job at night.
=> Not only does he go to school full-time during the day, but he also has a part-time job at night.
14. He had neither any relatives in the U.S. nor many friends.
=> Not only did he have any relatives in the U.S. but also many friends.
15. The district Attorney's office offered her a job, and the Legal Aid Society did too.
=> The district Attorney's office offered her a job, as did the Legal Aid Society.
16. He neither complained nor criticized.
=> Not only did he complained but also criticized.
17. The weather was so bad that the flight was cancelled.
=> So bad was the weather that the flight was cancelled.
18. People complained so bitterly about the loud radios that the government passed any ordinance forbidding them.
=> So bitterly did people complained so the loud radios that the government passed any ordinance forbidding them.