9 is fairly formal but can be used in spoken English, especially British English. In American English it is more usual to use . In both American and British English, is more usual in speech than in writing. rather有点正式,但可用于口语,尤其是在英国英语里。 在美国英语中更常用 pretty。 在美国英语和英国英语中 pretty 在口语中用得均比书面语中多。
Rather pretty pretty