last year是什麼時態的標誌詞

This year's results are virtually the same as last year's.

今年的結果幾乎和去年的一樣。

Company profits were 5% lower than last year.

公司的利潤比去年降低了5%。

The hospital closed at the end of last year.

這所醫院去年年底關閉。

The new wing was built onto the hospital last year.

醫院的'新翼樓是去年增建的。

Sales are well up on last year.

銷量比去年大幅增加。