七、句型写作练习
（一） 并列句
两个或两个以上的简单句用等立连词或用分号、冒号、逗号等连在一起构成的句子叫并列句。常用的等立连词有and, or, but, so, for, neither, nor, while, whereas等。
用括号中的连接词连接下面各组句子。
1) It was a cold snowy day.
He had no money left for food.  (and)
2) Hurry up.
You’ll be late.    (or)
3) It rained heavily last night.
I went to the show anyway.  (but)
4) I enjoy classical music.
She enjoys classical music, too.  (so)
5) He must be ill.
He is absent today.   (for)
  6） Some people waste food.
Others haven’t enough.   (while)
 7)   She is fat.
        Her husband is thin.    (whereas)
 8)   She cannot read.
        She cannot write, either.    (neither)

（二） 复合句
由一个主句和一个或一个以上的从句所构成的句子结构叫做复合句，也叫主从复合句。从句由关联词引导，关联词将从句与主句联系在一起。根据其在复合句中的作用，从句可以分为主语从句、宾语从句、表语从句、定语从句、状语从句和同位语从句。
 名词从句
主语从句、宾语从句、表语从句和同位语从句在句子中的作用相当于名词通常在句中所起的作用，因此统称为名词从句。
引导名词从句的关联词，主要有三类：
1． 主从连词：that（无词义），whether（是否），if（是否）
2． 连接代词：who（谁），whom（谁），whose（谁的），what（什么），which（哪一个，哪一些）
3． 连接副词：when（什么时候），where（什么地方），why（为什么），how（怎样）
主从连词只起连接作用；连接代词和连接副词除了起连接作用外，还充当句中某一个成
分。
1. 将下面每组中的两个句子合并，将其中一个改为主语从句。
1) They need more help in English.
That is quite obvious.
2) She is still alive.
That is good news.
3) She will come here.
It doesn’t seem likely.
4) The children came to the zoo.
They like the pandas best.
5) We are badly in need of something.
It is raw material.

2. 将下面每组中的词连成句子，使其中包含主语从句。
1) did not, a pity, he, come earlier, it’s, that
2) smoking, it is, cause, a well-known fact, lung cancer, can, that
3) encouraged him, it is, but, help him, true, actually, I, that, didn’t
4) they, keep their promise, didn’t, seem, it, likely, that, would ever
5) why, for criticism, hard to understand, had singled out, Mary, it was, Prof. Hardy

3. 将下面每组中的两个句子合并，将其中一个改为宾语从句。
1) What kind of show are they putting on?
Can you tell me?
2) Is the letter overweight？
I’m wondering.
3) How can we improve our study habits?
I am thinking of that.
4) Is Henry the right person for the job?
We are still uncertain as to that.
5) Peter has a slight headache sometimes.
He has always been in good health except that.
6) He had forgotten to take his notebook with him.