in the past用什么时态

in the past有在过去 以往 平昔 往昔的意思，是一个介词短语，在句中作时间状语

　一、用于一般过去时

In the past， people had fewer expectations. 过去，人们的希求要少一些。

　In the past he had to read by candlelight. 过去他只得在烛光下攻读。

　Today， people are much more concerned about their health than they were in the past. 现在人们比过去更关注自己的健康。

二、用于现在完成时

In the past this process of transition has often proved difficult. 过去这种过渡过程常证明是困难的。

　We have achieved much in the past， and we may hope to achieve even more in the future. 过去我们已取得很大成绩，将来我们希望取得更大的成绩

in the past用什么时态

涉及到时态，In +段时间 是一般将来时 以为几天/月/年 以后 用how soon 回答 He will finish the project in 3days. 如果想表达在段时间内 可以用 over/during 时态的话 具体看语境 多数情况是一般过去时 现在完成时 Over the past decades the city has witnessed the great changes。 During the fifty years of his career as an actor，he starred in some superhero films. They discussed some issues about personal growth over afternoon tea.