2014职称英语一篇阅读理解中的一句话如何分析?部分原文引用如下：There are several different methods that can be used to create a forecast.The method a forecaster chooses depends upon the experience of the forecaster,the amoun

2014职称英语一篇阅读理解中的一句话如何分析?部分原文引用如下：There are several different methods that can be used to create a forecast.The method a forecaster chooses depends upon the experience of the forecaster,the amoun
2014职称英语一篇阅读理解中的一句话如何分析?
部分原文引用如下：
There are several different methods that can be used to create a forecast.The method a forecaster chooses depends upon the experience of the forecaster,the amount of information available to the forecaster,the level of difficulty that the forecast situation presents,and the degree of accuracy or confidence needed in the forecast.
The first of these methods is the persistence method; the simplest way of producing a forecast.The persistence method assumes that the conditions at the time of the forecast will not change.For example,if it is sunny and 87 degree today,the persistence method predicts that it will be sunny and 87 degree tomorrow.If two inches of rain fell today,the persistence method would predict two inches of rain for tomorrow.However,if weather conditions change significantly from day to day,the persistence method usually breaks down and is not the best forecasting method to use.
The trends method involves determining the speed and direction of movement for fronts,high and low pressure centers,and areas of clouds and precipitation.Using this information,the forecaster can predict where he or she expects those features to be at some future time.
其中Using this information,the forecaster can predict where he or she expects those features to be at some future time.这句话中的 where he or she expects those features to be的插入和使用让我迷糊,求分析.教材对这句话的翻译是：利用这些信息,预报员能预测未来某个时间某个地区会出现同样特征的天气状况.

2014职称英语一篇阅读理解中的一句话如何分析?部分原文引用如下：There are several different methods that can be used to create a forecast.The method a forecaster chooses depends upon the experience of the forecaster,the amoun
首先这句话是插入句,类似于从句,he or she是用来修饰预报员的,在不知道预报员的性别的情况下,he or she莫过于最好的表达方式,因为这个世界上不是女人就是男人,不能用it来表示吧,expects 的使用是因为he or she都是第三人称,所以加s.those features to be是未来事态,将要发生的天气状况.