—Can I leave the door open at night？—No，you________．A.should better notB.would beuer notC.had better notD.have better not
网友回答
C
解析分析：问句Can I leave the door open at night？(我可以在晚上把门开着吗？)是个请求对方允许的句子，其否定回答可以用No，you mustn't．No，you earn't．No，you may not．但这种方式不够委婉。客气一些的话，可以用下列委婉形式：Please don't．/You'd better not．/I'm afraid you can't．本题中的四个选项中只有C项had better not是正确的形式。(延伸)You'd better do sth/You'd better not do sth是You had better do sth/You had better not do sth的缩略形式，原来是had，不是should，would．