Question

20．這不但殘忍，而且對(duì)環(huán)境有害．
This is not only cruel，but also harmful to the environment．．

Answer 1

分析 but also harmful to the environment．

解答 答案：but also harmful to the environment．
表示不僅…而且用not only…but also，這里的主謂共一個(gè)this is，表示對(duì)…有害用be harmful to，后加the environment環(huán)境，故答案是but also harmful to the environment．

點(diǎn)評(píng) not only…but also主要用于連接兩個(gè)對(duì)等的成分；若連接兩個(gè)成分作主語(yǔ)，其后謂語(yǔ)動(dòng)詞與靠近的主語(yǔ)保持一致．Not only the students but also their teacher is enjoying the film．不僅學(xué)生們?cè)谛蕾p這部影片，他們的老師也在欣賞這部影片．