從朗文390 million超級語料庫中提取出的3000高頻詞彙,區分為"說"與"寫"
S1 = one of the 1000 most frequent words in Spoken English;  W1 = one of the 1000 most frequent words in Written English
S2 = one of the 2000 most frequent words in Spoken English;  W2 = one of the 2000 most frequent words in Written English
S3 = one of the 3000 most frequent words in Spoken English;  W3 = one of the 3000 most frequent words in Written English