Question

Tigers are endangered animals.There aren't many of them____

a.leave b.to leave C.left D.to be left

Answer 1

Tigers are endangered animals.There aren't many of them____
A.leave B .to leave C.left D.to be left
答：C.
译：老虎是濒危动物。现在剩下的不多了。
分析：此题考非谓语动词作定语的用法。
there be 句型的主语（名词或代词）在be后，其后置定语可以是分词或不定式。分词有两种句式。
1. there is sb. doing sth. 如：
There is a man waiting for you at the school gate.
校门口有一个人在等你。=There is a man who is waiting for you at the school gate.
现在分词的逻辑主语是man,他与wait是主动并进行的关系。
2. there is sth. left. 如：
There is only 5 minutes left.
只剩下5分钟了=There is only 5 minutes which is left.
过去分词left的逻辑主语是5 minutes, 它与leave 是被动（被剩下，被留下）的关系。
there be句型中，也有用不定式作定语的：
There is sth. to do/ to be done. 有一些事要做（要被做）。不定式的动词应为及物动词，它与sth.有动宾的关系。表示“未来”。
本题中从形式上CD都可以，但不合句意，不合逻辑。（没有多少老虎要留（被留）下），说不通。

Answer 2

C 仍存在的