1．only润饰状语置于句首。当“only+状语”置于句首时，这以后用部分倒装，此刻的only意为“只要”，着重唯一性和排他性。如：Only here were the police visible in any strength at all. 只要在这里才干看到廖廖几个差人。

[留意]若置于句首的“only+状语”不着重唯一性或排他性，其间的only表明“仅仅”，相当于just或as recently as等，此刻这以后的语句则不必倒装。如：Only yesterday, it seemed to her, she had born Sophia. 她好像觉得她昨天才生的索菲娅。

2．not only后接完好语句。not only…but also…（不光……并且……）结构不只可用于衔接两个词或短语，有时还可用于衔接两个语句，此刻若将not only置于句首，那么这以后所接的语句则要用部分倒装的方式。如：Not only did we lose our money, but we were nearly killed. 咱们不光丢了钱，并且简直丧了命。如：Not only my mother was unhappy, but Marian, too. 不只我母亲不高兴，玛丽安也不高兴。

3．only润饰不定式表成绩。only后接不定式作状语时，有时表明意图，有时表明成绩（特别表明让人没有事前想到或令人感到不快的意外成绩）。如：He rushed to the airport only to miss his flight by two minutes. 他仓促到了机场，不料却晚到两分钟而误了航班。（句中的only to miss…表成绩）

1. He spent ages negotiating for a pay increase, only _______ from his job soon after he’d received it.

A. to resignB. resigningC. to have resignedD. having resigned

答案：A。only to do sth 在此表明意想不到的成绩。又如：Dan made a break for his car only to find the driver’s door locked. 丹朝他的轿车跑去，却发现驾驭座方位的门被锁住了。

2. Dan made a break for his car only _______ the driver’s door locked.

A. to find B. findingC. to have found D. having found

答案：A。only to do sth 在此表明意想不到的成绩。句意为：丹朝他的轿车跑去，却发现驾驭座方位的门被锁住了。又如：He graduated with a good degree, only to join the ranks of the unemployed. 他拿到很好的学位毕了业，却加入了赋闲大军的队伍。由于then后接的语句用了倒装语序，所以选C，由于只有当only润饰状语置于句首时，这以后语句一般要用部分倒装的方式。句意为：飞机驾驶员要乘客们定心，这时我才理解方才的状况有多风险。又如：Only then did she realise what she had agreed to. 仅仅到了那个时候她才意识到她所赞同的是什么。