Any correction is all a progress.任何改正都是进步。

America is a developed country.

美国是一个发达国家。

The meeting to be held tomorrow is of great importance.

明天要举行的会议很重要。

（2）过去分词除了用作定语，还可作状语、补语和表语。

Mr. Green, deeply moved, thanked us again and again.

格林先生深为感动，一再向我们表示感谢。

He was trying to make himself understood.

他努力想让别人听懂他的话。

I must get my bike repaired.

我必须请人修理自行车。

He looked excited.

他显得很激动。

3.You may not need to read the whole text if you can find what you are looking for under one or two subtitles.(page3)如果你能从一两个副标题下找到你想要的内容，你就不需要读完整篇文章。

【剖析】本句是复合句，主句是You may not need to read the whole text.条件状语从句是if you can find what you are looking for under one or two subtitles.条件状语从句中又包含了一个what引导的宾语从句。

【归纳】what引导名词性从句中，除了充当引导词的角色，还可在句子中作主语、宾语、表语等。

What we need is more practice.

我们需要的是再多一点训练。

Guilin is not what it used to be.

桂林已不再是从前那样子了。

I wonder what has happened to him.

我不知道他发生了什么事。

The teacher is pleased with what he said.

老师对于她所说的很满意。

I have no idea what we should do.

我不知道应该怎么办。

This is what he was looking for.

这就是他刚才找的东西。

What he wanted was the money.

他想要的是钱。

4.The report is based on the findings of research that was carried out in Sweden,comparing 1,617 patients found to have brain tumours between 1997 and 2003 with the same number of healthy people.(page 14, lines 9-15)那个报告是以一个在瑞典进行的研究的结论为依据，这个结论是通过在1997年到2003年比较了数目相同的脑瘤患者与正常人而得出的。

【剖析】这是一个复合句，The report is based on the findings of research是主句；that was carried out in Sweden是定语从句，comparing 1,617 patients... healthy people是现在分词作状语。

【归纳】现在分词作状语，表示时间、原因、结果、条件、伴随等。现在分词作时间状语时，有时可以由连词when/while引出，强调动作与谓语动词表示的动作同时发生，现在分词