The Coast Guard is conducting tests to see whether pigeons can be trained to help find survivors of wrecks at sea.
to see whether pigeons can be trained to help find
to see whether pigeons can be trained as help to find
to see if pigeons can be trained for helping to find
that see if pigeons are able to be trained in helping to find
that see whether pigeons are able to be trained for help in finding
题目分析:
略
选项分析:
A选项:Correct. 本选项在语法和逻辑上均是正确的。
B选项:介词短语as help to find survivors of wrecks at sea需改为不定式短语to help find survivors of wrecks at sea and time。这点考查了名词和不定式的区别(as身后的help是名词,to help是不定式)。用之于本题,变化部分是谓语动词train的宾语部分,所以应该根据train的约束力来判断。显然地,本选项中train的约束力较强, 应该用不定式作宾语。
C选项:表示二者择一的时候应该用whether而不用if。另外,for helping to find survivors of wrecks at sea需改为不定式短语to help find survivors of wrecks at sea and time。这点考查了不定式和ing的区别,该错误原理同(B)。
D选项:表示二者择一的时候应该用whether而不用if;介词短语for helping to find survivors of wrecks at sea需改为不定式短语to help find survivors of wrecks at sea and time,该错误同选项(C)。定语从句that see需改为不定式短语to see,这点考查了不定式和从句的区别。用之于本题,变化部分是定语,在逻辑上,主句“海岸警卫制作测试”的发生会直接影响“检查鸽子是否能被训练”这个事件的发生与否。因此,必须用不定式作test的定语。
E选项:定语从句that see需改为不定式短语to see错误同(D);for help in finding错误同(B)。
目的修饰手段 ,动作发生者须一致
登录 或 注册 后可以参加讨论