(1) 含有否定意义的词never，seldom，little.hardly，not，scarcely，nowhere，by no means(决不)等置于句首时。
①Never have I seen such a man. 我从来没有见过这样的人。
②Not until yesterday did we know that he had died of cancer. 直到昨天我们才知道他死于癌症。
①Only then did I realize that I was wrong. 只是到那时我才意识到我错了。
②Only in this way can you improve your English. 只有这样你才能提高英语水平。
③Only when he is free does he come to see me. 只有当他空闲时才来看我。
①They all finished the work. So did I. 他们都完成了工作，我也完成了。
②We have never been abroad，neither has she. 我们从来未去过国外，她也没去过。
一The students work very hard.学生们学习努力。
一So they do.他们确实是这样。
(4)当not only…but also, so／such…that, not… until, no sooner… than, hardly… when等连词置于句首时。
①Not only did we lose all our money，but also we came close to losing our lives.
②So hard does he study that he often forgets food and sleep.
③No sooner had I gone out than a friend of mine came to see me.
①Child as he is, he knows more than you.虽 然他是孩子，但他懂的比你多。
②Tired as he was, he continued the work. 虽然他累了，但他继续工作。
③Much as I like it, I will not buy it. 虽然我很喜欢这东西，但我不想买它。
④Try as they may, they will not succeed. 尽管他们很努力，但不会成功。
①Were I in school again, I would work harder. 如果我重新回到学校，我会加倍努力学习。
②Had you not helped me, I wouldn’t have succeeded. 若不是你帮我，我不会成功。
③Should it rain tomorrow, the crops would be saved. 如果明天下雨，庄稼会得救的。 .
(7)频度副词often, always, once, now and then, every other day, many a time等放在句首时。
①Often did we go for walks together after supper at that time. 那时，我们晚饭后常一块儿散步。
②Every other day did he go to the hospital to see his father. 每隔一天他就去医院看望他父亲。
①Gone forever are the days when the Chinese people were looked down upon. 中国人被瞧不起的日子一去不复返了。
②Also present will be a person who thinks up an idea for an advertisement. 出席会议的还有广告的策划者。