After a long period of rain the river may overflow its banks. This is a rare occurrenceas our climate seldom guest to extremes. We are lucky in that only the lower fields,which make up a very small proportion of our farm, are effected by flooding, but otherfarms are less favorably sited, and flooding can sometimes spell disaster for theirowners.

　　10.After a long period of rain the river may overflow its banks.

　　久雨这后，河水会泛滥成灾。

　　11.This is a rare occurrence as our climate seldom guest to extremes.

　　但是在我们这里，气候很少发生异常，河水极少泛滥。

　　语言点:句子结构分析:as引导原因状语从句。

　　12.We are lucky in that only the lower fields, which make up a very small proportionof our farm, are effected by flooding, but other farms are less favorably sited, andflooding can sometimes spell disaster for their owners.

　　值得庆幸的是，只有低洼的受到洪水影响，而低洼地在我们农场比例很小。其他农场地势欠佳，洪水有时会给农场主带来灾难。

　　语言点:句子结构分析:请注意，这个句子有三个主句，其中连词But前的句子和它后面的两个分句是让步转折的关系，后面这两个分句间的连词and连接两个并列关系的句子。In that表示“由于，因为。”