Tom is absent today because he is sick.
湯姆今天缺席，因為他生病了。
Many students were absent from class this morning.
今天早上很多學生缺席這堂課。
Dad is absent tonight because he is on a business trip.
爸爸今晚不在，因為他出差。
The English teacher is absent, so the class is free.
英文老師缺席，所以這節課不用上。