2.3.I'm only afraid I may be bored.(我只害怕我可能会觉得无聊。)
3.may用来表示某事可能正在发生:(may + be + 动词的现在分词)
3.1.They may be sleeping because we can hear no sound in their room.(他们可能正在房间里睡觉,国为我们听到任何声音。)
3.2.He may be doing his homework.Don't disturb him.(他可能正在做作业,别打扰他。)
4.may用来表示某事已经发生:(may + have + 动词的过去分词)
4.1.You may have read some account of the matter.(关于这件事你可能已经听过一些描述
了。)
4.2.Mathews may have written that letter.(马修斯可能已写了那封信。)
注:may和might表示"可能"时一般不用于疑问句。表达疑问时要用别的说法。例如:
Is it likely to rain,do you think?(错误的句子是:May it rain?)
表示否定时要用can't或couldn't("不可能")。
(四)must用来表示"肯定"的猜测:
1.must用来表示对现在的动作或状态的"肯定"的猜测:
1.1.Judging by the smell,the food must be good.(从气味来判断,这食物肯定很好吃。)
1.2.It's a quarter past three.He must be in by now.(现在已是三点一刻了,他肯定已到家
了。)
1.3.I'm always running into him,he must live neat here.(我总是遇见他,他肯定就住在附
近。)
1.4.Mary must have some problem.She keeps crying.(玛丽肯定有什么问题,她一直在哭。)
2.对正在进行的动作的"肯定"的猜测:
2.1.You must be joking.(你肯定在开玩笑。)
2.2.If she is borrowing money,she must be getting into debt.(如果她在借钱,她肯定陷入
债务当中了。)
2.3.His progress indicates that he must be working hard.(他的进步表明他正在努力。)
3.对过去动作的"肯定"的猜测:
3.1.He must have arrived by air.(他肯定已乘机到达了。)
3.2.He must have received my letter.(他肯定已收到我的信了。)
3.3.His watch must have stopped.I'll go and call him.(他的表肯定已停了,我去叫他。)
情态动词表示猜测的用法