前面有介係詞,關係代名詞只能選whom,但是並沒有這選項
所以選 what
(that 前面不能有介係詞)
how 與文意不符
佛心詳解
After I saw the movie, I was shocked by what humans have done to the earth.
看完電影后,我被人類對地球所做的事情震驚了。
what = the thing that=all that
what =先行詞+關代,使用what 時.前面不能有先行詞 ,what 之後也不加上關代.
參考活用英文文法句型P160頁
35. After I saw the movie, I was shocked..-阿摩線上測驗