We went home at half past four yesterday.

我们昨天四点半回家的。

youdao

It's half past four.

现在四点半了。

youdao

I should think about half past four years.

我应该想到过去的四年半。

youdao

Murphy notes that the stock has been cut in half over the past four months, and asserts that it now looks like a buying opportunity for long-term investors.

FORBES: SuccessFactors: Piper Says Buy

Price wars in the UK and elsewhere are hurting the bottom line as well, and like other operators Vodafone has seen its average revenues per subscriber fall by more than half during the past four years.

BBC: Markets wait for Vodafone

Sy-Coson, the one most mentioned as heir apparent, has spent nearly half her time over the past four years trying to stitch together a merger between Banco de Oro, long controlled by the family, and the larger listed Equitable PCI bank, in which it has recently been accumulating shares.

FORBES: Magazine Article