1。 It is considered /thought that人们(有人,大家)认为
2。 It is generally /usually accepted /agreed/recognized that普遍(一般,通常)认为
3。 It is believed that有人(人们,大家)相信
4。 It is well—known that大家知道(众所周知)
5。 It is said that据说(有人说)
6。 It is learned that据闻(悉)
7。 It is supposed that据推测
8。 It is estimated/predicted/calculated that据估计(预计)
9。 It must be pointed that必须指出
10。 It is reported that据报道
11。 It must be admitted that必须承认
12。 It will be seen that可见(可以看出)
13。 It will be seen from this that由此可见
14。 It is understood that不用说(都知道)
15。 It can not be denied that无可否认
16。 It has been proved/demonstrated that已经证明
17。 It may be confirmed that可以肯定
18。 It may be safely said that可以有把握地说
19。 It is sometimes asked that人们有时会问
20。 It is expected that/hoped that人们希望
21。 When it comes to要说到,要谈及
1:Peoples views onvary from person to person. Some hold thatHowever, others believe that
2:People may have different opinions on
3:Attitudes towards vary from person to person.==Different people hold different attitudes towards
4:There are different opinions among people as to
1 No one can deny the fact that ...
2 The idea is hardly supported by facts.
3 Unfortunately, none of the available data shows ...
表格说明。即在说明事物或知识时,把与之有关的数字列成表格,插于说明文字之中。表中所列项目,根据说明需要而定。这样说明,既清晰集中,又能进行比较,便于理解和记忆。例如《万紫千红的花》这篇说明文第七自然节,在说明花的颜色时,就列出了表格:
这个表格里的项目有花的颜色和种数两类,共有9种花色,从而形成比较,有力地说明了花色之中白色最多黑色最少的`特点,将被说明的对象介绍得一清 二楚。至于花的姿态,花的开放时间以及花呈不同色彩的原因,表中均末列项,这就既紧扣了课题万紫千红,又突出了说明的重点。
插图说明。有些事物须用图示才能说得清楚,如某种新产品的介绍,某种科学知识的解说,某种复杂的事物的说明等,就常常在文学中配上插图或示意 图,以助文字说明。例如《统筹方法》,在介绍统筹方法时,就先后列举了三个示意图,一是相互关系箭头图,二是工作合并图,三是数字表示任务图,分别如下:
这三幅示意图,形象地再现了统筹方法的主要内容,通过图示不难看出,关系清楚,顺序明了,谁优谁劣不言而喻,从而使这种复杂的科学方法简单化了,给人以鲜明直观的深刻印象,是语言文字所无法比拟的。
运用图表助示法说明事物,表格的项目不可设计过繁,将可比的几个事物或几种知识的主要比项列出即可。图表应放在文中与被说明文字密切相关之处。 图表虽是全文的有机组成部分,但不可过多运用,它只是为文字服务的,起助说作用,图表一多,令人眼花缭乱,容易给人以厌烦和累赘之感。
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