I find watching English movies frustrating because people speak too quickly.为什么要用frustrating?

问题描述:

I find watching English movies frustrating because people speak too quickly.为什么要用frustrating?

frustrating这里是用于补充说明watching English movies,所以使用ing形式;
这个句子可以变成:
I find watching English movies (is) frustrating because people speak too quickly.
这样更有助于你理解.
如果是说我看了电影后的感受应该使用frustrated
I feel frustrated after watching English movies because people speak too quickly.