要点1:em dash连接的句子前后都不能有空格。
要点2:除非遇到天生大写的字母,em
dash后接的单词不能大写,例:Juan tried begging, bribing, and even demanding cooperation from his staff—all
of whom were swamped with other work—before he gave up and wrote the report
himself.
要点3:en dash和em dash的得名,en dash的长度等于一个typesetter'sletter N,而em dash的长度则与一个M字母的长度相当。因此,前者称为en dash,后者称为em dash,都是英文写作中经常用到的破折号。
要点4:表示时间、日期、空间等范围时,一律用en dash,而不是hyphen。hyphen只用于连接单词构成复合词。例如:Sitting-room, left-handed,It takes 3–6 days to get there.
要点5:-、–、—(这三个符号依次为hyphen、en dash、em dash,长度由左向右递增。若看上去第一个与第二个一样长,这是网页字体格式显示有误所致,copy到写字板或者记事薄中查看就会看到真实效果了。