完整性
正象我们前面说得那样,一个段落的主题思想靠推展句来实现,如果只有主题句而没有推展句来进一步交待和充实,就不能构成一个完整的段落。同样,虽然有推展句,但主题思想没有得到相对圆满的交待,给读者一种意犹未尽的感觉。这样的段落也不能完成其交际功能。例如:
Physical work can be a useful form of therapy for a mind in turmoil. Work concentrates your thoughts on a concrete task. Besides, it is more useful to work ---- you produce something rather than more anxiety or depression.
本段的主题句是段首句。本段的两个推展句均不能回答主题句中提出的问题。什么是“a mind in turmoil”(心境不平静) Physical work又如何能改变这种情况?为什么它能起therapy的作用?读者得不到明确的答案。由于四级统考的作文部分只要求写一篇 100~120个词的三段式短文,每一段只有大约40个词左右,因此,要达到完整就必须尽可能地简明。例如:
It is not always true that a good picture is worth a thousand words. Often writing is much clearer than a picture. It is sometimes difficult to figure out what a picture means, but a careful writer can almost always explain it.
段首句所表达的主题思想是一种看法,必须有具体事例加以验证。上述两个推展句只是在文字上对主题作些解释,整个段落内容空洞,简而不明。如果用一两个具体的例子的话,就可以把主题解释清楚了。比如下段:
It is not always true that a picture is worth a thousand words. Sometimes, pictures are pretty useless things. If you can’t swim and fall in the river and start gulping water, will you be better off to hold up a picture of yourself drowning, or start screaming "Help"?;
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