试比较：

　　The first thing to be done is to tidy up the office.

　　The first thing for you to do is to tidy up the office.

3. They may play to passer-by in the street or subway so that they can earn some extra money.他们可能在街上或地铁里为过路者演奏，以便有一些额外收入。

　　so that= in order that引导目的状语从句。so that也可引导状语从句。其区别在于so that引导目的状语从句时，从句中的谓语常含有can, could, be able to等情态动词，而结果状语从句中没有，另外结果状语从句常用逗号与主句隔开，但目的状语从句一般不用。so that引导目的状语从句在许多情况下可改写为so as to或in order to引起的不定式短语。

考点例题：

　　完成句子：He said in a loud voice ______________________________________.

　　（结果大家听到了那个信息）

　　He said in a loud voice _______________________________________.

　　（以便大家都能听到那个信息）

【模拟试题】

（一）用框内所给词组的适当形式完成下列句子（其中两个是多余的）

in peace； as a result ； by chance； stick to； above all； be honest with； in danger； play a jokes on； dream of； pay attention to； or so； sort out 　1. The daughter asked her father to ___________ his health.

　2. He slipped and broke his leg. __________, he will have to be away from school for two or three months.

　3. Make sure you _________ the same story when you are questioned a second time.

　4. He spent a happy afternoon ______ his coins and stamps.

　5. I met him ________ on the way home yesterday afternoon.

　6. He knew the man he _________ did not exist.

　7. My father was warned by the neighbors that we were ________.

　8. The boys _________ James. They hid his shoes and he could not find them.

　9. After such a busy life I would like to settle in the country, where I can live________.

　10. It is reported that there are thirty students ___________ in the classroom.

（二）根据句子意思写出括号内所给单词的恰当形式。

　1. In the school play Dora gave a good ___________（perform） last weekend.

　2. Jealousy is a very ____________（power） emotion.

　3. The child's reading ___________（able） was satisfactory for his age level.

　4. As an ___________（know） author, it isn't easy to get your work published.

　5. Mother asked the little girl to hold the bird neither too ________（loose） nor too firmly.

　6. It is ____________（kind） of you to say such things that made her unhappy.

　7. More ____________（recent）, banks had offered customers the opportunity to change to PC or telephone banking.

　8. Vitamin C provides some __________（protect） against minor illnesses.

　9. The Sunday papers are full of _____________（advertise） for cars.

　10. "A bird in the hand is worth two in the bush" is an old ____________（say）.