表达时间关系的常用词语： Now；nowadays；when；before ；after ；while ；during； between...and... ；In...(year) ；since... ；Later ；earlier ；formerly； etc. At the turn of the century(dacade) ；etc. In the first half of the century ；etc. In the 1900’s ；etc. At birth ; in childhood ; in adolescence ; as an adult ; in adulthood ; in old age ; at death ; simultaneously ; simutaneous with ; at the same time as ; the former ; the later ; previous ; previously ; prior to ; first ; second ; etc. In the first place ; in the second place ; etc. To begin with ; next ; then ; subsequently ; in the next place ; in conclusion ; finally ; lastly ; in the end 本文来源：https://www.wddqw.com/doc/7b34c34f3169a4517723a3d5.html