I come here only to say good-bye to you.　 我来仅仅是向你告别。

2）作结果状语，表事先没有预料到的，要放在句子后面。

　He searched the room only to find nothing.

3)　表原因 I'm glad to see you.

典型例题：The chair looks rather hard, but in fact it is very comfortable to ___.

　 A. sit　 B. sit on　 C. be seat　 D. be sat on

答案：B.　如果不定式为不及物动词，其后应有必要的介词。当动词与介词连用时，常位于"形容词+动词不定式"结构的末尾。

make sure

1) 查明；弄确实

I think the party begins at eight o'clock but I'll phone to make sure.

我想晚会八点开始，但是我要打电话问确切了。

Make sure of your facts before you accuse him.

在指责他以前要把材料核实一下。

2) 确信；有把握

I made sure you would come today.

我相信你今天一定会来的。

3) 弄到某物

There aren't many left. You'd better make sure of one before they are all sold.

所剩不多了。在卖完以前，你最好去弄一个来。

2.Charles believes that many people want to earn a lot of money so that they will not have any worries.

查尔斯认为许多人想挣大量的钱以便解除烦恼。

本句话是个主从复合句。that-clause是believe的宾语从句，在宾语从句中又含有so that引导的目的状语从句。

so that与so...that...的用法

so that有两个意思

I got up very early, so that I caught the first bus.(因此)

I should get up early tomorrow so that I can catch the first bus.(为了)

区别这两句可以看有没有逗号。

He tries his best so that he can pass the exam.

(主句和从句时态保持一致即可)

以上句为例，改为简单句：He tries his best, because he wants to pass the exam.

根据句意改变，不需要改变时态。

so...that... 如此......以致于......

He ran so fast that nobody could catch up with him.他跑得如此之快以致没人赶上他。

I'm so excited that I can't fall asleep.我激动得睡不着觉。

知识巩固

一、根据下面单词的首字母或汉语意思写出该单词

1. We had an _______(快乐的;有乐趣的) time. enjoyable

2. Don't be so g_______ -- -leave some food for the rest. greedy

3. His report contained only _______（旧的，二手的）information. second-hand

4. The man is a j_________（新闻工作者,新闻记者）. journalist

5. Mr Smith asked his son to buy a pack of c________ (香烟，纸烟)for him. cigarettes