If you want ____ ,you should speak slowly and clearly to the listeners.

题目

If you want ____ ,you should speak slowly and clearly to the listeners.
[A] to be understood
[B] to understand it
[C] understanding
[D] to understood
这题如何判断内?
这题说的是不是,如果你想让他们明白,你需要说得慢点,清楚点.这里是不是等于 to be understood by listeners.只是后面省略了by .

答案

by有被动的意思,这句用的是被动语法
被动语法在这句的程况上要加be