Question

19．野生动物的数量越来越少了．
The number of the wild animals is becoming smaller and smaller．．

Answer 1

分析 The number of the wild animals is becoming smaller and smaller．

解答 答案：The number of the wild animals is becoming smaller and smaller．这里是说正在进行的事情，用现在完成时am/is/are+现在分词，主语是野生动物的数量，用the number of表示"…的数量"，作主语时，谓语动词用单数，故is，变得become，越来越少了，用比较级+and+比较级表示越来越…，数量少用small，故smaller and smaller，故答案是The number of the wild animals is becoming smaller and smaller．

点评 the number of表示"…的数量"，跟复数名词连用作主语时，中心词是number，谓语动词要用单数．例如：
The number of students in our class is50．我们班学生的数量是50人．
a number of表示"许多"，相当于 many，修饰可数名词复数．作主语时，谓语动词用复数．number前可用large，small等修饰，以表示程度．例如：A number of students are planting trees on the hill．许多学生在小山上植树．