In the past ten years, Mos Def has become a successful actor in plays and movies.

VOA: special.2009.07.24

When you got to be about the age of what you guys are here, Ephebate you might enter the ephebate; Ephebe you'd become an ephebe, and that just meant that you were past your sort of early secondary training and now you were being really in training to be a warrior and a citizen.

等长到差不多你们年纪时，就可以进入;,成为，表明他通过了类似早期中级教育,可以正式接受战士及公民的训练。

耶鲁公开课 - 新约课程节选

The scenes of striking workers at factory gates have become a regular sight in the past month.

VOA: standard.2010.06.24

The crisis in Honduras has become a hot topic for conservative pundits in the past several days.

VOA: standard.2009.07.03

"There are several problems with this notion of a failed state," "One of them is that somehow in Mexico,all of a sudden, the government has become heavily corrupted by cartels as if there wasn't corruption in the past.

VOA: standard.2009.12.18