Question

短文改错题

At one time American cut trees wildly. In 1620

1．________

about half the USA. were covered by forests and by

2．________

1850 one third of the forests have almost disappeared

3．________

a lot of good land Today, too many trees are

4．________

still been cut throughout the world. To keep the

5．________

balance of the nature, China built a “Great Green Wall”

6．________

of millions trees across its northern part in the 1970's,

7．________

it stops the wind blowing the earth away and the desert

8．________

moved towards the rich farmland in the south.

9．________

More and more good land appears every year.

10．________

Answer 1

答案：
解析：

1．America－－Americans　　Amrican是可数名词，此处应用其复数形式。 　　2．were－－was　　half the USA作为一个整体，动词应用单数形式。 　　3．hay－－had　　时间状语是by 1850，用过去完成时。 　　4．a lot前加with disappear表示“消失”是不及物动词，后接with表示“带着”。本句意思是“到1850年，几乎三分之一的森林和许多农田消失了”。 　　5．been－－being　　这里是现在进行时的被动语态，应用“be being＋过去分词”形式。 　　6．去掉the nature为不可数名词，表泛指不用冠词。 　　7．millions后加of millions of表示“数以百万计的”是一短语，后接名词的复数形式。 　　8．it－－which　　此处关系代词which既引导一个非限制性定语从句，又在从句中作主语。该非限制性定语从句修饰先行词Great Green Wall。 　　9．moved－moving与blowing并列。 　　10．√